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Slijkhuis N, Razzi F, Korteland SA, Heijs B, van Gaalen K, Duncker DJ, van der Steen AFW, van Steijn V, van Beusekom HMM, van Soest G. Spatial lipidomics of coronary atherosclerotic plaque development in a familial hypercholesterolemia swine model. J Lipid Res 2024; 65:100504. [PMID: 38246237 PMCID: PMC10879031 DOI: 10.1016/j.jlr.2024.100504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/22/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024] Open
Abstract
Coronary atherosclerosis is caused by plaque build-up, with lipids playing a pivotal role in its progression. However, lipid composition and distribution within coronary atherosclerosis remain unknown. This study aims to characterize lipids and investigate differences in lipid composition across disease stages to aid in the understanding of disease progression. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) was used to visualize lipid distributions in coronary artery sections (n = 17) from hypercholesterolemic swine. We performed histology on consecutive sections to classify the artery segments and to investigate colocalization between lipids and histological regions of interest in advanced plaque, including necrotic core and inflammatory cells. Segments were classified as healthy (n = 6), mild (n = 6), and advanced disease (n = 5) artery segments. Multivariate data analysis was employed to find differences in lipid composition between the segment types, and the lipids' spatial distribution was investigated using non-negative matrix factorization (NMF). Through this process, MALDI-MSI detected 473 lipid-related features. NMF clustering described three components in positive ionization mode: triacylglycerides (TAG), phosphatidylcholines (PC), and cholesterol species. In negative ionization mode, two components were identified: one driven by phosphatidylinositol(PI)(38:4), and one driven by ceramide-phosphoethanolamine(36:1). Multivariate data analysis showed the association between advanced disease and specific lipid signatures like PC(O-40:5) and cholesterylester(CE)(18:2). Ether-linked phospholipids and LysoPC species were found to colocalize with necrotic core, and mostly CE, ceramide, and PI species colocalized with inflammatory cells. This study, therefore, uncovers distinct lipid signatures correlated with plaque development and their colocalization with necrotic core and inflammatory cells, enhancing our understanding of coronary atherosclerosis progression.
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Affiliation(s)
- Nuria Slijkhuis
- Department of Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Francesca Razzi
- Department of Experimental Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Department of Chemical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Suze-Anne Korteland
- Department of Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Bram Heijs
- Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
| | - Kim van Gaalen
- Department of Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Dirk J Duncker
- Department of Experimental Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China; Department of Imaging Science and Technology, Delft University of Technology, Delft, The Netherlands
| | - Volkert van Steijn
- Department of Chemical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Heleen M M van Beusekom
- Department of Experimental Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Gijs van Soest
- Department of Cardiology, Cardiovascular Institute, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Department of Precision and Microsystems Engineering, Delft University of Technology, Delft, The Netherlands; Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA, USA.
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Tziotziou A, Hartman E, Korteland SA, van der Lugt A, van der Steen AFW, Daemen J, Bos D, Wentzel J, Akyildiz AC. Mechanical wall stress and wall shear stress are associated with atherosclerosis development in non-calcified coronary segments. Atherosclerosis 2023; 387:117387. [PMID: 38029610 DOI: 10.1016/j.atherosclerosis.2023.117387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023]
Abstract
BACKGROUND AND AIMS Atherosclerotic plaque onset and progression are known to be affected by local biomechanical factors. While the role of wall shear stress (WSS) has been studied, the impact of another biomechanical factor, namely mechanical wall stress (MWS), remains poorly understood. In this study, we investigated the association of MWS, independently and combined with WSS, towards atherosclerosis in coronary arteries. METHODS Thirty-four human coronary arteries were analyzed using near-infrared spectroscopy intravascular ultrasound (NIRS-IVUS) and optical coherence tomography (OCT) at baseline and after 12 months. Baseline WSS and MWS were calculated using computational models, and wall thickness (ΔWT) and lipid-rich necrotic core size (ΔLRNC) change were measured in non-calcified coronary segments. The arteries were further divided into 1.5 mm/45° sectors and categorized as plaque-free or plaque sectors. For each category, associations between biomechanical factors (WSS & MWS) and changes in coronary wall (ΔWT & ΔLRNC) were studied using linear mixed models. RESULTS In plaque-free sectors, higher MWS (p < 0.001) was associated with greater vessel wall growth. Plaque sectors demonstrated wall thickness reduction over time, likely due to medical therapy, where higher levels of WSS and WMS, individually and combined, (p < 0.05) were associated with a greater reduction. Sectors with low MWS combined with high WSS demonstrated the highest LRNC increase (p < 0.01). CONCLUSIONS In this study, we investigated the association of the (largely-overlooked) biomechanical factor MWS with coronary atherosclerosis, individually and combined with WSS. Our results demonstrated that both MWS and WSS significantly correlate with atherosclerotic plaque initiation and development.
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Affiliation(s)
- Aikaterini Tziotziou
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Eline Hartman
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, the Netherlands; Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Suze-Anne Korteland
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Aad van der Lugt
- Department of Radiology & Nuclear Medicine, Erasmus Medical Center, Rotterdam, the Netherlands
| | | | - Joost Daemen
- Department of Cardiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Daniel Bos
- Department of Radiology & Nuclear Medicine, Erasmus Medical Center, Rotterdam, the Netherlands; Department of Epidemiology, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Jolanda Wentzel
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Ali C Akyildiz
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, the Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Delft, the Netherlands.
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Wei L, Wahyulaksana G, Te Lintel Hekkert M, Beurskens R, Boni E, Ramalli A, Noothout E, Duncker DJ, Tortoli P, van der Steen AFW, de Jong N, Verweij M, Vos HJ. High-Frame-Rate Volumetric Porcine Renal Vasculature Imaging. Ultrasound Med Biol 2023; 49:2476-2482. [PMID: 37704558 DOI: 10.1016/j.ultrasmedbio.2023.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 07/02/2023] [Accepted: 08/08/2023] [Indexed: 09/15/2023]
Abstract
OBJECTIVE The aim of this study was to assess the feasibility and imaging options of contrast-enhanced volumetric ultrasound kidney vasculature imaging in a porcine model using a prototype sparse spiral array. METHODS Transcutaneous freehand in vivo imaging of two healthy porcine kidneys was performed according to three protocols with different microbubble concentrations and transmission sequences. Combining high-frame-rate transmission sequences with our previously described spatial coherence beamformer, we determined the ability to produce detailed volumetric images of the vasculature. We also determined power, color and spectral Doppler, as well as super-resolved microvasculature in a volume. The results were compared against a clinical 2-D ultrasound machine. RESULTS Three-dimensional visualization of the kidney vasculature structure and blood flow was possible with our method. Good structural agreement was found between the visualized vasculature structure and the 2-D reference. Microvasculature patterns in the kidney cortex were visible with super-resolution processing. Blood flow velocity estimations were within a physiological range and pattern, also in agreement with the 2-D reference results. CONCLUSION Volumetric imaging of the kidney vasculature was possible using a prototype sparse spiral array. Reliable structural and temporal information could be extracted from these imaging results.
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Affiliation(s)
- Luxi Wei
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands.
| | - Geraldi Wahyulaksana
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | | | - Robert Beurskens
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Enrico Boni
- Department of Information Engineering, University of Florence, Florence, Italy
| | - Alessandro Ramalli
- Department of Information Engineering, University of Florence, Florence, Italy
| | - Emile Noothout
- Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Dirk J Duncker
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands
| | - Piero Tortoli
- Department of Information Engineering, University of Florence, Florence, Italy
| | - Antonius F W van der Steen
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Nico de Jong
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Martin Verweij
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Hendrik J Vos
- Department of Cardiology, Erasmus MC University Medical Center, Rotterdam, The Netherlands; Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
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Wahyulaksana G, Wei L, Voorneveld J, Hekkert MTL, Strachinaru M, Duncker DJ, De Jong N, van der Steen AFW, Vos HJ. Higher Order Singular Value Decomposition Filter for Contrast Echocardiography. IEEE Trans Ultrason Ferroelectr Freq Control 2023; 70:1371-1383. [PMID: 37721879 DOI: 10.1109/tuffc.2023.3316130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/20/2023]
Abstract
Assessing the coronary circulation with contrast-enhanced echocardiography has high clinical relevance. However, it is not being routinely performed in clinical practice because the current clinical tools generally cannot provide adequate image quality. The contrast agent's visibility in the myocardium is generally poor, impaired by motion and nonlinear propagation artifacts. The established multipulse contrast schemes (MPCSs) and the more experimental singular value decomposition (SVD) filter also fall short to solve these issues. Here, we propose a scheme to process amplitude modulation/amplitude-modulated pulse inversion (AM/AMPI) echoes with higher order SVD (HOSVD) instead of conventionally summing the complementary pulses. The echoes from the complementary pulses form a separate dimension in the HOSVD algorithm. Then, removing the ranks in that dimension with dominant coherent signals coming from tissue scattering would provide the contrast detection. We performed both in vitro and in vivo experiments to assess the performance of our proposed method in comparison with the current standard methods. A flow phantom study shows that HOSVD on AM pulsing exceeds the contrast-to-background ratio (CBR) of conventional AM and an SVD filter by 10 and 14 dB, respectively. In vivo porcine heart results also demonstrate that, compared to AM, HOSVD improves CBR in open-chest acquisition (up to 19 dB) and contrast ratio (CR) in closed-chest acquisition (3 dB).
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Torun SG, Munoz PDM, Crielaard H, Verhagen HJM, Kremers GJ, van der Steen AFW, Akyildiz AC. Local Characterization of Collagen Architecture and Mechanical Failure Properties of Fibrous Plaque Tissue of Atherosclerotic Human Carotid Arteries. Acta Biomater 2023; 164:293-302. [PMID: 37086826 DOI: 10.1016/j.actbio.2023.04.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 04/05/2023] [Accepted: 04/13/2023] [Indexed: 04/24/2023]
Abstract
Atherosclerotic plaque rupture in carotid arteries is a major cause of cerebrovascular events. Plaque rupture is the mechanical failure of the heterogeneous fibrous plaque tissue. Local characterization of the tissue's failure properties and the collagen architecture are of great importance to have insights in plaque rupture for clinical event prevention. Previous studies were limited to average rupture properties and global structural characterization, and did not provide the necessary local information. In this study, we assessed the local collagen architecture and failure properties of fibrous plaque tissue, by analyzing 30 tissue strips from 18 carotid plaques. Our study framework entailed second harmonic generation imaging for local collagen orientation and dispersion, and uniaxial tensile testing and digital image correlation for local tissue mechanics. The results showed that 87% of the imaged locations had collagen orientation close to the circumferential direction (0°) of the artery, and substantial dispersion locally. All regions combined, median [Q1:Q3] of the predominant angle measurements was -2° [-16°:16°]. The stretch ratio measurements clearly demonstrated a nonuniform stretch ratio distribution in the tissue under uniaxial loading. The rupture initiation regions had significantly higher stretch ratios (1.26 [1.15-1.40]) than the tissue average stretch ratio (1.11 [1.10-1.16]). No significant difference in collagen direction and dispersion was identified between the rupture regions and the rest of the tissue. The presented study forms an initial step towards gaining better insights into the characterization of local structural and mechanical fingerprints of fibrous plaque tissue in order to aid improved assessment of plaque rupture risk. STATEMENT OF SIGNIFICANCE: Plaque rupture risk assessment, critical to prevent cardiovascular events, requires knowledge on local failure properties and structure of collagenous plaque tissue. Our current knowledge is unfortunately limited to tissue's overall ultimate failure properties with scarce information on collagen architecture. In this study, local failure properties and collagen architecture of fibrous plaque tissue were obtained. We found predominant circumferential alignment of collagen fibers with substantial local dispersion. The tissue showed nonuniform stretch distribution under uniaxial tensile loading, with high stretches at rupture spots. This study highlights the significance of local mechanical and structural assessment for better insights into plaque rupture and the potential use of local stretches as risk marker for plaque rupture for patient-specific clinical applications.
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Affiliation(s)
- Su Guvenir Torun
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Pablo de Miguel Munoz
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Hanneke Crielaard
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Hence J M Verhagen
- Department of Vascular Surgery, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Gert-Jan Kremers
- Erasmus Optical Imaging Center, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Ali C Akyildiz
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, The Netherlands; Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands.
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Li H, Li X, Collado-Lara G, Lattwein KR, Mastik F, Beurskens R, van der Steen AFW, Verweij MD, de Jong N, Kooiman K. Coupling Two Ultra-high-Speed Cameras to Elucidate Ultrasound Contrast-Mediated Imaging and Therapy. Ultrasound Med Biol 2023; 49:388-397. [PMID: 36241587 DOI: 10.1016/j.ultrasmedbio.2022.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 08/26/2022] [Accepted: 08/31/2022] [Indexed: 06/16/2023]
Abstract
Ultrasound contrast-mediated medical imaging and therapy both rely on the dynamics of micron- and nanometer-sized ultrasound cavitation nuclei, such as phospholipid-coated microbubbles and phase-change droplets. Ultrasound cavitation nuclei respond non-linearly to ultrasound on a nanosecond time scale that necessitates the use of ultra-high-speed imaging to fully visualize these dynamics in detail. In this study, we developed an ultra-high-speed optical imaging system that can record up to 20 million frames per second (Mfps) by coupling two small-sized, commercially available, 10-Mfps cameras. The timing and reliability of the interleaved cameras needed to achieve 20 Mfps was validated using two synchronized light-emitting diode strobe lights. Once verified, ultrasound-activated microbubble responses were recorded and analyzed. A unique characteristic of this coupled system is its ability to be reconfigured to provide orthogonal observations at 10 Mfps. Acoustic droplet vaporization was imaged from two orthogonal views, by which the 3-D dynamics of the phase transition could be visualized. This optical imaging system provides the temporal resolution and experimental flexibility needed to further elucidate the dynamics of ultrasound cavitation nuclei to potentiate the clinical translation of ultrasound-mediated imaging and therapy developments.
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Affiliation(s)
- Hongchen Li
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - Xiufeng Li
- Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Gonzalo Collado-Lara
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Kirby R Lattwein
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Frits Mastik
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Robert Beurskens
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Martin D Verweij
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Section of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
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Wang T, Pfeiffer T, Akyildiz A, van Beusekom HMM, Huber R, van der Steen AFW, van Soest G. Intravascular optical coherence elastography. Biomed Opt Express 2022; 13:5418-5433. [PMID: 36425628 PMCID: PMC9664873 DOI: 10.1364/boe.470039] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/30/2022] [Accepted: 08/31/2022] [Indexed: 05/07/2023]
Abstract
Optical coherence elastography (OCE), a functional extension of optical coherence tomography (OCT), visualizes tissue strain to deduce the tissue's biomechanical properties. In this study, we demonstrate intravascular OCE using a 1.1 mm motorized catheter and a 1.6 MHz Fourier domain mode-locked OCT system. We induced an intraluminal pressure change by varying the infusion rate from the proximal end of the catheter. We analysed the pixel-matched phase change between two different frames to yield the radial strain. Imaging experiments were carried out in a phantom and in human coronary arteries in vitro. At an imaging speed of 3019 frames/s, we were able to capture the dynamic strain. Stiff inclusions in the phantom and calcification in atherosclerotic plaques are associated with low strain values and can be distinguished from the surrounding soft material, which exhibits elevated strain. For the first time, circumferential intravascular OCE images are provided side by side with conventional OCT images, simultaneously mapping both the tissue structure and stiffness.
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Affiliation(s)
- Tianshi Wang
- Thoraxcentre, Erasmus University Medical Centre, Rotterdam 3015 AA, The Netherlands
| | - Tom Pfeiffer
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck 23562, Germany
| | - Ali Akyildiz
- Thoraxcentre, Erasmus University Medical Centre, Rotterdam 3015 AA, The Netherlands
- Department of Biomechanical Engineering, Delft University of Technology, Delft 2600 AA, The Netherlands
| | | | - Robert Huber
- Institut für Biomedizinische Optik, Universität zu Lübeck, Lübeck 23562, Germany
| | - Antonius F. W. van der Steen
- Thoraxcentre, Erasmus University Medical Centre, Rotterdam 3015 AA, The Netherlands
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518005, China
- Department of Imaging Science and Technology, Delft University of Technology, Delft 2600 AA, The Netherlands
| | - Gijs van Soest
- Thoraxcentre, Erasmus University Medical Centre, Rotterdam 3015 AA, The Netherlands
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Wei L, Boni E, Ramalli A, Fool F, Noothout E, van der Steen AFW, Verweij MD, Tortoli P, De Jong N, Vos HJ. Sparse 2-D PZT-on-PCB Arrays With Density Tapering. IEEE Trans Ultrason Ferroelectr Freq Control 2022; 69:2798-2809. [PMID: 36067108 DOI: 10.1109/tuffc.2022.3204118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Two-dimensional (2-D) arrays offer volumetric imaging capabilities without the need for probe translation or rotation. A sparse array with elements seeded in a tapering spiral pattern enables one-to-one connection to an ultrasound machine, thus allowing flexible transmission and reception strategies. To test the concept of sparse spiral array imaging, we have designed, realized, and characterized two prototype probes designed at 2.5-MHz low-frequency (LF) and 5-MHz high-frequency (HF) center frequencies. Both probes share the same electronic design, based on piezoelectric ceramics and rapid prototyping with printed circuit board substrates to wire the elements to external connectors. Different center frequencies were achieved by adjusting the piezoelectric layer thickness. The LF and HF prototype probes had 88% and 95% of working elements, producing peak pressures of 21 and 96 kPa/V when focused at 5 and 3 cm, respectively. The one-way -3-dB bandwidths were 26% and 32%. These results, together with experimental tests on tissue-mimicking phantoms, show that the probes are viable for volumetric imaging.
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Fraser AG, Monaghan MJ, van der Steen AFW, Sutherland GR. A concise history of echocardiography: timeline, pioneers, and landmark publications. Eur Heart J Cardiovasc Imaging 2022; 23:1130-1143. [PMID: 35762885 PMCID: PMC9365309 DOI: 10.1093/ehjci/jeac111] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 05/24/2022] [Accepted: 05/26/2022] [Indexed: 12/22/2022] Open
Abstract
Echocardiography is less than 70 years old, and many major advances have occurred within living memory, but already some pioneering contributions may be overlooked. In order to consider what circumstances have been common to the most successful innovations, we have studied and here provide a timeline and summary of the most important developments in transthoracic and transoesophageal ultrasound imaging and Doppler techniques, as well as in intravascular ultrasound and imaging in paediatric cardiology. The entries are linked to a comprehensive list of first publications and to a collection of first-hand historical accounts published by early investigators. Review of the original manuscripts highlights that it is difficult to establish unequivocal precedence for many new imaging methods, since engineers were often working independently but simultaneously on similar problems. Many individuals who are prominently linked with particular developments were not the first in their field. Developments in echocardiography have been highly dependent on technological advances, and most likely to be successful when engineers and clinicians were able to collaborate with open exchange between centres and disciplines. As with many other new medical technologies, initial responses were sceptical and introduction into clinical practice required persistence and substantial energy from the first adopters. Current developments involve advances in software as much as in equipment, and progress will depend on continuing collaborations between engineers and clinical scientists, for example to identify unmet needs and to investigate the clinical impact of particular imaging approaches.
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Affiliation(s)
- Alan G Fraser
- Consultant Cardiologist, University Hospital of Wales, and Emeritus Professor of Cardiology, School of Medicine, Cardiff University, Heath Park, Cardiff CF14 4XW, UK
- Visiting Professor, Cardiovascular Imaging and Dynamics, Katholieke Universiteit Leuven, Belgium
| | - Mark J Monaghan
- Immediate Past Director of Non-Invasive Cardiology, King’s College Hospital, London, UK
| | - Antonius F W van der Steen
- Head of Biomedical Engineering, Cardiology Department, Thorax Centre Erasmus University Medical Centre Rotterdam, The Netherlands
| | - George R Sutherland
- Retired Professor of Cardiology, St George’s Hospital Medical School, London, UK
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Wahyulaksana G, Wei L, Schoormans J, Voorneveld J, van der Steen AFW, de Jong N, Vos HJ. Independent Component Analysis Filter for Small Vessel Contrast Imaging During Fast Tissue Motion. IEEE Trans Ultrason Ferroelectr Freq Control 2022; 69:2282-2292. [PMID: 35594222 DOI: 10.1109/tuffc.2022.3176742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Suppressing tissue clutter is an essential step in blood flow estimation and visualization, even when using ultrasound contrast agents. Blind source separation (BSS)-based clutter filter for high-framerate ultrasound imaging has been reported to perform better in tissue clutter suppression than the conventional frequency-based wall filter and nonlinear contrast pulsing schemes. The most notable BSS technique, singular value decomposition (SVD) has shown compelling results in cases of slow tissue motion. However, its performance degrades when the tissue motion is faster than the blood flow speed, conditions that are likely to occur when imaging the small vessels, such as in the myocardium. Independent component analysis (ICA) is another BSS technique that has been implemented as a clutter filter in the spatiotemporal domain. Instead, we propose to implement ICA in the spatial domain where motion should have less impact. In this work, we propose a clutter filter with the combination of SVD and ICA to improve the contrast-to-background ratio (CBR) in cases where tissue velocity is significantly faster than the flow speed. In an in vitro study, the range of fast tissue motion velocity was 5-25 mm/s and the range of flow speed was 1-12 mm/s. Our results show that the combination of ICA and SVD yields 7-10 dB higher CBR than SVD alone, especially in the tissue high-velocity range. The improvement is crucial for cardiac imaging where relatively fast myocardial motions are expected.
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Lattwein KR, Beekers I, Kouijzer JJP, Leon-Grooters M, Langeveld SAG, van Rooij T, van der Steen AFW, de Jong N, van Wamel WJB, Kooiman K. Dispersing and Sonoporating Biofilm-Associated Bacteria with Sonobactericide. Pharmaceutics 2022; 14:pharmaceutics14061164. [PMID: 35745739 PMCID: PMC9227517 DOI: 10.3390/pharmaceutics14061164] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/14/2022] [Accepted: 05/16/2022] [Indexed: 02/04/2023] Open
Abstract
Bacteria encased in a biofilm poses significant challenges to successful treatment, since both the immune system and antibiotics are ineffective. Sonobactericide, which uses ultrasound and microbubbles, is a potential new strategy for increasing antimicrobial effectiveness or directly killing bacteria. Several studies suggest that sonobactericide can lead to bacterial dispersion or sonoporation (i.e., cell membrane permeabilization); however, real-time observations distinguishing individual bacteria during and directly after insonification are missing. Therefore, in this study, we investigated, in real-time and at high-resolution, the effects of ultrasound-induced microbubble oscillation on Staphylococcus aureus biofilms, without or with an antibiotic (oxacillin, 1 μg/mL). Biofilms were exposed to ultrasound (2 MHz, 100–400 kPa, 100–1000 cycles, every second for 30 s) during time-lapse confocal microscopy recordings of 10 min. Bacterial responses were quantified using post hoc image analysis with particle counting. Bacterial dispersion was observed as the dominant effect over sonoporation, resulting from oscillating microbubbles. Increasing pressure and cycles both led to significantly more dispersion, with the highest pressure leading to the most biofilm removal (up to 83.7%). Antibiotic presence led to more variable treatment responses, yet did not significantly impact the therapeutic efficacy of sonobactericide, suggesting synergism is not an immediate effect. These findings elucidate the direct effects induced by sonobactericide to best utilize its potential as a biofilm treatment strategy.
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Affiliation(s)
- Kirby R. Lattwein
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
- Correspondence: ; Tel.: +31-107044633
| | - Inés Beekers
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Joop J. P. Kouijzer
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Mariël Leon-Grooters
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Simone A. G. Langeveld
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Tom van Rooij
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Antonius F. W. van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
- Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology, Building 22, Room D218, Lorentzweg 1, 2628 CJ Delft, The Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
- Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology, Building 22, Room D218, Lorentzweg 1, 2628 CJ Delft, The Netherlands
| | - Willem J. B. van Wamel
- Department of Medical Microbiology and Infectious Diseases, Erasmus MC University Medical Center Rotterdam, Office Na9182, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands;
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands; (I.B.); (J.J.P.K.); (M.L.-G.); (S.A.G.L.); (T.v.R.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
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12
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Beekers I, Langeveld SAG, Meijlink B, van der Steen AFW, de Jong N, Verweij MD, Kooiman K. Internalization of targeted microbubbles by endothelial cells and drug delivery by pores and tunnels. J Control Release 2022; 347:460-475. [PMID: 35545132 DOI: 10.1016/j.jconrel.2022.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 04/09/2022] [Accepted: 05/03/2022] [Indexed: 12/15/2022]
Abstract
Ultrasound insonification of microbubbles can locally enhance drug delivery by increasing the cell membrane permeability. To aid development of a safe and effective therapeutic microbubble, more insight into the microbubble-cell interaction is needed. In this in vitro study we aimed to investigate the initial 3D morphology of the endothelial cell membrane adjacent to individual microbubbles (n = 301), determine whether this morphology was affected upon binding and by the type of ligand on the microbubble, and study its influence on microbubble oscillation and the drug delivery outcome. High-resolution 3D confocal microscopy revealed that targeted microbubbles were internalized by endothelial cells, while this was not the case for non-targeted or IgG1-κ control microbubbles. The extent of internalization was ligand-dependent, since αvβ3-targeted microbubbles were significantly more internalized than CD31-targeted microbubbles. Ultra-high-speed imaging (~17 Mfps) in combination with high-resolution confocal microscopy (n = 246) showed that microbubble internalization resulted in a damped microbubble oscillation upon ultrasound insonification (2 MHz, 200 kPa peak negative pressure, 10 cycles). Despite damped oscillation, the cell's susceptibility to sonoporation (as indicated by PI uptake) was increased for internalized microbubbles. Monitoring cell membrane integrity (n = 230) showed the formation of either a pore, for intracellular delivery, or a tunnel (i.e. transcellular perforation), for transcellular delivery. Internalized microbubbles caused fewer transcellular perforations and smaller pore areas than non-internalized microbubbles. In conclusion, studying microbubble-mediated drug delivery using a state-of-the-art imaging system revealed receptor-mediated microbubble internalization and its effect on microbubble oscillation and resulting membrane perforation by pores and tunnels.
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Affiliation(s)
- Inés Beekers
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands; Department of Health, ORTEC B.V., Houtsingel 5, 2719 EA Zoetermeer, the Netherlands.
| | - Simone A G Langeveld
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Bram Meijlink
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands; Laboratory of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Building 22, Room D218, Lorentzweg 1, 2628 CJ Delft, the Netherlands
| | - Martin D Verweij
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands; Laboratory of Medical Imaging, Department of Imaging Physics, Delft University of Technology, Building 22, Room D218, Lorentzweg 1, 2628 CJ Delft, the Netherlands
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Office Ee2302, P.O. Box 2040, 3000 CA Rotterdam, the Netherlands
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13
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Langeveld SAG, Meijlink B, Beekers I, Olthof M, van der Steen AFW, de Jong N, Kooiman K. Theranostic Microbubbles with Homogeneous Ligand Distribution for Higher Binding Efficacy. Pharmaceutics 2022; 14:pharmaceutics14020311. [PMID: 35214044 PMCID: PMC8878664 DOI: 10.3390/pharmaceutics14020311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/14/2022] [Accepted: 01/16/2022] [Indexed: 02/05/2023] Open
Abstract
Phospholipid-coated targeted microbubbles are used for ultrasound molecular imaging and locally enhanced drug delivery, with the binding efficacy being an important trait. The use of organic solvent in microbubble production makes the difference between a heterogeneous or homogeneous ligand distribution. This study demonstrates the effect of ligand distribution on the binding efficacy of phospholipid-coated ανβ3-targeted microbubbles in vitro using a monolayer of human umbilical-vein endothelial cells and in vivo using chicken embryos. Microbubbles with a homogeneous ligand distribution had a higher binding efficacy than those with a heterogeneous ligand distribution both in vitro and in vivo. In vitro, 1.55× more microbubbles with a homogeneous ligand distribution bound under static conditions, while this was 1.49× more under flow with 1.25 dyn/cm2, 1.56× more under flow with 2.22 dyn/cm2, and 1.25× more in vivo. The in vitro dissociation rate of bound microbubbles with homogeneous ligand distribution was lower at low shear stresses (1–5 dyn/cm2). The internalized depth of bound microbubbles was influenced by microbubble size, not by ligand distribution. In conclusion, for optimal binding the use of organic solvent in targeted microbubble production is preferable over directly dispersing phospholipids in aqueous medium.
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Affiliation(s)
- Simone A. G. Langeveld
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
- Correspondence:
| | - Bram Meijlink
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Inés Beekers
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
- Department of Health, ORTEC B.V., 2719 EA Zoetermeer, The Netherlands
| | - Mark Olthof
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Antonius F. W. van der Steen
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
| | - Nico de Jong
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
- Imaging Physics, Delft University of Technology, 2628 CJ Delft, The Netherlands
| | - Klazina Kooiman
- Thorax Center, Biomedical Engineering, Erasmus University Medical Center Rotterdam, 3000 CA Rotterdam, The Netherlands; (B.M.); (I.B.); (M.O.); (A.F.W.v.d.S.); (N.d.J.); (K.K.)
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14
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Meester EJ, Krenning BJ, de Blois E, de Jong M, van der Steen AFW, Bernsen MR, van der Heiden K. Imaging inflammation in atherosclerotic plaques, targeting SST 2 with [ 111In]In-DOTA-JR11. J Nucl Cardiol 2021; 28:2506-2513. [PMID: 32026330 PMCID: PMC8709817 DOI: 10.1007/s12350-020-02046-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 12/24/2019] [Indexed: 12/26/2022]
Abstract
BACKGROUND Imaging Somatostatin Subtype Receptor 2 (SST2) expressing macrophages by [DOTA,Tyr3]-octreotate (DOTATATE) has proven successful for plaque detection. DOTA-JR11 is a SST2 targeting ligand with a five times higher tumor uptake than DOTATATE, and holds promise to improve plaque imaging. The aim of this study was to evaluate the potential of DOTA-JR11 for plaque detection. METHODS AND RESULTS Atherosclerotic ApoE-/- mice (n = 22) fed an atherogenic diet were imaged by SPECT/CT two hours post injection of [111In]In-DOTA-JR11 (~ 200 pmol, ~ 50 MBq). In vivo plaque uptake of [111In]In-DOTA-JR11 was visible in all mice, with a target-to-background-ratio (TBR) of 2.23 ± 0.35. Post-mortem scans after thymectomy and ex vivo scans of the arteries after excision of the arteries confirmed plaque uptake of the radioligand with TBRs of 2.46 ± 0.52 and 3.43 ± 1.45 respectively. Oil red O lipid-staining and ex vivo autoradiography of excised arteries showed [111In]In-DOTA-JR11 uptake at plaque locations. Histological processing showed CD68 (macrophages) and SST2 expressing cells in plaques. SPECT/CT, in vitro autoradiography and immunohistochemistry performed on slices of a human carotid endarterectomy sample showed [111In]In-DOTA-JR11 uptake at plaque locations containing CD68 and SST2 expressing cells. CONCLUSIONS The results of this study indicate DOTA-JR11 as a promising ligand for visualization of atherosclerotic plaque inflammation.
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Affiliation(s)
- Eric J Meester
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | | | - Erik de Blois
- Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Marion de Jong
- Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Monique R Bernsen
- Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Kim van der Heiden
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
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15
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Guvenir Torun S, Torun HM, Hansen HHG, de Korte CL, van der Steen AFW, Gijsen FJH, Akyildiz AC. Multicomponent material property characterization of atherosclerotic human carotid arteries through a Bayesian Optimization based inverse finite element approach. J Mech Behav Biomed Mater 2021; 126:104996. [PMID: 34864574 DOI: 10.1016/j.jmbbm.2021.104996] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 11/01/2021] [Accepted: 11/23/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Plaque rupture in atherosclerotic carotid arteries is a main cause of ischemic stroke and it is correlated with high plaque stresses. Hence, analyzing stress patterns is essential for plaque specific rupture risk assessment. However, the critical information of the multicomponent material properties of atherosclerotic carotid arteries is still lacking greatly. This work aims to characterize component-wise material properties of atherosclerotic human carotid arteries under (almost) physiological loading conditions. METHODS An inverse finite element modeling (iFEM) framework was developed to characterize fibrous intima and vessel wall material properties of 13 cross sections from five carotids. The novel pipeline comprised ex-vivo inflation testing, pre-clinical high frequency ultrasound for deriving plaque deformations, pre-clinical high-magnetic field magnetic resonance imaging, finite element modeling, and a sample efficient machine learning based Bayesian Optimization. RESULTS The nonlinear Yeoh constants for the fibrous intima and wall layers were successfully obtained. The optimization scheme of the iFEM reached the global minimum with a mean error of 3.8% in 133 iterations on average. The uniqueness of the results were confirmed with the inverted Gaussian Process (GP) model trained during the iFEM protocol. CONCLUSION The developed iFEM approach combined with the inverted GP model successfully predicted component-wise material properties of intact atherosclerotic human carotids ex-vivo under physiological-like loading conditions. SIGNIFICANCE We developed a novel iFEM framework for the nonlinear, component-wise material characterization of atherosclerotic arteries and utilized it to obtain human atherosclerotic carotid material properties. The developed iFEM framework has great potential to be advanced for patient-specific in-vivo application.
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Affiliation(s)
- Su Guvenir Torun
- Department of Biomedical Engineering, Erasmus Medical Center, 3015 GD, Rotterdam, the Netherlands.
| | - Hakki M Torun
- School of Electrical and Computer Engineering, Georgia Institute Technology, Atlanta, GA, USA
| | - Hendrik H G Hansen
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Chris L de Korte
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, the Netherlands
| | | | - Frank J H Gijsen
- Department of Biomedical Engineering, Erasmus Medical Center, 3015 GD, Rotterdam, the Netherlands; Department of Biomechanical Engineering, Delft University of Technology, the Netherlands
| | - Ali C Akyildiz
- Department of Biomedical Engineering, Erasmus Medical Center, 3015 GD, Rotterdam, the Netherlands; Department of Biomechanical Engineering, Delft University of Technology, the Netherlands
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16
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Wei L, Wahyulaksana G, Meijlink B, Ramalli A, Noothout E, Verweij MD, Boni E, Kooiman K, van der Steen AFW, Tortoli P, de Jong N, Vos HJ. High Frame Rate Volumetric Imaging of Microbubbles Using a Sparse Array and Spatial Coherence Beamforming. IEEE Trans Ultrason Ferroelectr Freq Control 2021; 68:3069-3081. [PMID: 34086570 DOI: 10.1109/tuffc.2021.3086597] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Volumetric ultrasound imaging of blood flow with microbubbles enables a more complete visualization of the microvasculature. Sparse arrays are ideal candidates to perform volumetric imaging at reduced manufacturing complexity and cable count. However, due to the small number of transducer elements, sparse arrays often come with high clutter levels, especially when wide beams are transmitted to increase the frame rate. In this study, we demonstrate with a prototype sparse array probe and a diverging wave transmission strategy, that a uniform transmission field can be achieved. With the implementation of a spatial coherence beamformer, the background clutter signal can be effectively suppressed, leading to a signal to background ratio improvement of 25 dB. With this approach, we demonstrate the volumetric visualization of single microbubbles in a tissue-mimicking phantom as well as vasculature mapping in a live chicken embryo chorioallantoic membrane.
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17
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Guvenir Torun S, Torun HM, Hansen HHG, Gandini G, Berselli I, Codazzi V, de Korte CL, van der Steen AFW, Migliavacca F, Chiastra C, Akyildiz AC. Multicomponent Mechanical Characterization of Atherosclerotic Human Coronary Arteries: An Experimental and Computational Hybrid Approach. Front Physiol 2021; 12:733009. [PMID: 34557112 PMCID: PMC8452922 DOI: 10.3389/fphys.2021.733009] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 08/17/2021] [Indexed: 12/15/2022] Open
Abstract
Atherosclerotic plaque rupture in coronary arteries, an important trigger of myocardial infarction, is shown to correlate with high levels of pressure-induced mechanical stresses in plaques. Finite element (FE) analyses are commonly used for plaque stress assessment. However, the required information of heterogenous material properties of atherosclerotic coronaries remains to be scarce. In this work, we characterized the component-wise mechanical properties of atherosclerotic human coronary arteries. To achieve this, we performed ex vivo inflation tests on post-mortem human coronary arteries and developed an inverse FE modeling (iFEM) pipeline, which combined high-frequency ultrasound deformation measurements, a high-field magnetic resonance-based artery composition characterization, and a machine learning-based Bayesian optimization (BO) with uniqueness assessment. By using the developed pipeline, 10 cross-sections from five atherosclerotic human coronary arteries were analyzed, and the Yeoh material model constants of the fibrous intima and arterial wall components were determined. This work outlines the developed pipeline and provides the knowledge of non-linear, multicomponent mechanical properties of atherosclerotic human coronary arteries.
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Affiliation(s)
- Su Guvenir Torun
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, Netherlands
| | - Hakki M Torun
- School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, United States
| | - Hendrik H G Hansen
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, Netherlands
| | - Giulia Gandini
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, Netherlands.,Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Irene Berselli
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, Netherlands.,Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Veronica Codazzi
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, Netherlands.,Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Chris L de Korte
- Department of Medical Imaging, Radboud University Medical Center, Nijmegen, Netherlands.,Physics of Fluids Group, TechMed Centre, University of Twente, Enschede, Netherlands
| | | | - Francesco Migliavacca
- Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta," Politecnico di Milano, Milan, Italy
| | - Claudio Chiastra
- PolitoBIOMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Ali C Akyildiz
- Department of Biomedical Engineering, Erasmus Medical Center, Rotterdam, Netherlands.,Department of Biomechanical Engineering, Delft University of Technology, Delft, Netherlands
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Dilba K, van Dam-Nolen DHK, Crombag GAJC, van der Kolk AG, Koudstaal PJ, Nederkoorn PJ, Hendrikse J, Kooi ME, van der Steen AFW, Wentzel JJ, van der Lugt A, Bos D. Dolichoarteriopathies of the extracranial internal carotid artery: The Plaque At RISK study. Eur J Neurol 2021; 28:3133-3138. [PMID: 34133824 PMCID: PMC8457194 DOI: 10.1111/ene.14982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND PURPOSE Dolichoarteriopathies of the extracranial part of the internal carotid artery (ICA) are associated with cerebrovascular events, yet information on their prevalence and risk factors remains limited. The aim of the present study therefore was to study the prevalence and risk factors of dolichoarteriopathies in a sample of patients with cerebrovascular symptoms from the Plaque At RISK (PARISK) study. METHODS In a random sample of 100 patients from the PARISK study, multidetector computed tomography angiography (MDCTA) was performed as part of clinical workup. On MDCTA, we evaluated the extracranial trajectory of the ICA by measuring the length (in millimeters), the tortuosity index (TI; defined as the ICA length divided by the shortest possible distance from bifurcation to skull base), and dolichoarteriopathy type (tortuosity, coiling or kinking). Next, we investigated the association between cardiovascular risk factors and these measurements using linear and logistic regression analyses. RESULTS The mean (standard deviation) length of the ICA was 93 (± 14) mm, with a median (interquartile range) TI of 1.2 (1.1-1.3). The overall prevalence of dolichoarteriopathies was 69%, with tortuosity being the most common (72%), followed by coiling (20%), and kinking (8%). We found that age and obesity were associated with a higher TI: difference per 10-year increase in age: 0.05 (95% confidence interval [CI] 0.02-0.08) and 0.16 (95% CI 0.07-0.25) for obesity. Obesity and hypercholesterolemia were associated with a more severe type of dolichoarteriopathy (odds ratio [OR] 2.07 [95% CI 1.04-4.12] and OR 2.17 [95% CI 1.02-4.63], respectively). CONCLUSION Dolichoarteriopathies in the extracranial ICA are common in patients with cerebrovascular symptoms, and age, obesity and hypercholesterolemia may play an important role in the pathophysiology of these abnormalities.
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Affiliation(s)
- Kristine Dilba
- Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Dianne H K van Dam-Nolen
- Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Geneviève A J C Crombag
- Radiology and Nuclear Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, The Netherlands
| | | | - Peter J Koudstaal
- Neurology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Paul J Nederkoorn
- Neurology, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Jeroen Hendrikse
- Radiology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Marianne Eline Kooi
- Radiology and Nuclear Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, The Netherlands
| | | | - Jolanda J Wentzel
- Cardiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Aad van der Lugt
- Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Daniel Bos
- Radiology and Nuclear Medicine, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands.,Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, The Netherlands
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19
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Voorneveld J, Keijzer LBH, Strachinaru M, Bowen DJ, Mutluer FO, van der Steen AFW, Cate FJT, de Jong N, Vos HJ, van den Bosch AE, Bosch JG. Optimization of Microbubble Concentration and Acoustic Pressure for Left Ventricular High-Frame-Rate EchoPIV in Patients. IEEE Trans Ultrason Ferroelectr Freq Control 2021; 68:2432-2443. [PMID: 33720832 DOI: 10.1109/tuffc.2021.3066082] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
High-frame-rate (HFR) echo-particle image velocimetry (echoPIV) is a promising tool for measuring intracardiac blood flow dynamics. In this study, we investigate the optimal ultrasound contrast agent (UCA: SonoVue) infusion rate and acoustic output to use for HFR echoPIV (PRF = 4900 Hz) in the left ventricle (LV) of patients. Three infusion rates (0.3, 0.6, and 1.2 ml/min) and five acoustic output amplitudes (by varying transmit voltage: 5, 10, 15, 20, and 30 V-corresponding to mechanical indices of 0.01, 0.02, 0.03, 0.04, and 0.06 at 60-mm depth) were tested in 20 patients admitted for symptoms of heart failure. We assess the accuracy of HFR echoPIV against pulsed-wave Doppler acquisitions obtained for mitral inflow and aortic outflow. In terms of image quality, the 1.2-ml/min infusion rate provided the highest contrast-to-background ratio (CBR) (3-dB improvement over 0.3 ml/min). The highest acoustic output tested resulted in the lowest CBR. Increased acoustic output also resulted in increased microbubble disruption. For the echoPIV results, the 1.2-ml/min infusion rate provided the best vector quality and accuracy; mid-range acoustic outputs (corresponding to 15-20-V transmit voltages) provided the best agreement with the pulsed-wave Doppler. Overall, the highest infusion rate (1.2 ml/min) and mid-range acoustic output amplitudes provided the best image quality and echoPIV results.
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20
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Zangabad RP, Bosch JG, Mastik F, Beurskens RHSH, Henneken VA, Weekamp JW, van der Steen AFW, van Soest G. Real-Time Coded Excitation Imaging Using a CMUT-Based Side Looking Array for Intravascular Ultrasound. IEEE Trans Ultrason Ferroelectr Freq Control 2021; 68:2048-2058. [PMID: 33502975 DOI: 10.1109/tuffc.2021.3054971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Intravascular ultrasound (IVUS) is a well-established diagnostic method that provides images of the vessel wall and atherosclerotic plaques. We investigate the potential for phased-array IVUS utilizing coded excitation (CE) for improving the penetration depth and image signal-to-noise ratio (SNR). It is realized on a new experimental broadband capacitive micromachined ultrasound transducer (CMUT) array, operated in collapse mode, with 96 elements placed at the circumference of a catheter tip with a 1.2- mm diameter. We characterized the array performance for CE imaging and showed that the -6-dB device bandwidth at a 30-V dc biasing is 25 MHz with a 20-MHz center frequency, with a transmit sensitivity of 37 kPa/V at that frequency. We designed a linear frequency modulation code to improve penetration depth by compensating for high-frequency attenuation while preserving resolution by a mismatched filter reconstruction. We imaged a wire phantom and a human coronary artery plaque. By assessing the image quality of the reconstructed wire phantom image, we achieved 60- and 70- μm axial resolutions using the short pulse and coded signal, respectively, and gained 8 dB in SNR for CE. Our developed system shows 20-frames/s, pixel-based beam-formed, real-time IVUS images.
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21
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Daeichin V, van Rooij T, Skachkov I, Ergin B, Specht PAC, Lima A, Ince C, Bosch JG, van der Steen AFW, de Jong N, Kooiman K. Corrections to "Microbubble Composition and Preparation for High-Frequency Contrast-Enhanced Ultrasound Imaging: In Vitro and In Vivo Evaluation". IEEE Trans Ultrason Ferroelectr Freq Control 2021; 68:2321. [PMID: 33739922 DOI: 10.1109/tuffc.2021.3067599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In the above article [1], the authors regret that there was a mistake in calculating the mol% of the microbubble coating composition used. For all experiments, the unit in mg/mL was utilized and the conversion mistake only came when converting to mol% in order to define the ratio between the coating formulation components. The correct molecular weight of PEG-40 stearate is 2046.54 g/mol [2], [3], not 328.53 g/mol. On page 556, Table I should read as shown here.
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22
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Skachkov I, Luan Y, van der Steen AFW, Jong ND, Kooiman K. Corrections to "Targeted Microbubble Mediated Sonoporation of Endothelial Cells In Vivo". IEEE Trans Ultrason Ferroelectr Freq Control 2021; 68:2320. [PMID: 33687842 DOI: 10.1109/tuffc.2021.3064763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In the above article [1], the authors regret that there was a mistake in calculating the mol% of the microbubble coating composition. For all experiments, the unit in mg/mL was utilized and the conversion mistake only came when converting to mol% in order to define the ratio between the coating formulation components. The correct molecular weight of PEG-40 stearate is 2046.54 g/mol [2], [3], not 328.53 g/mol. On page 1661, paragraph II-A, it should read "The coating was composed of DSPC (84.8 mol%; P 6517; Sigma-Aldrich, Zwijndrecht, The Netherlands);PEG-40 stearate (8.2 mol%; P 3440; Sigma-Aldrich); DSPE-PEG(2000) (5.9 mol%; 880125 P; Avanti Polar Lipids, Alabaster, AL, USA); and DSPE-PEG(2000)-biotin (1.1 mol%; 880129 C; Avanti Polar Lipids)".
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23
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Pakdaman Zangabad R, Iskander-Rizk S, van der Meulen P, Meijlink B, Kooiman K, Wang T, van der Steen AFW, van Soest G. Photoacoustic flow velocity imaging based on complex field decorrelation. Photoacoustics 2021; 22:100256. [PMID: 33868919 PMCID: PMC8040274 DOI: 10.1016/j.pacs.2021.100256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/16/2021] [Accepted: 02/21/2021] [Indexed: 05/18/2023]
Abstract
Photoacoustic (PA) imaging can be used to monitor flowing blood inside the microvascular and capillary bed. Ultrasound speckle decorrelation based velocimetry imaging was previously shown to accurately estimate blood flow velocity in mouse brain (micro-)vasculature. Translating this method to photoacoustic imaging will allow simultaneous imaging of flow velocity and extracting functional parameters like blood oxygenation. In this study, we use a pulsed laser diode and a quantitative method based on normalized first order field autocorrelation function of PA field fluctuations to estimate flow velocities in an ink tube phantom and in the microvasculature of the chorioallantoic membrane of a chicken embryo. We demonstrate how the decorrelation time of signals acquired over frames are related to the flow speed and show that the PA flow analysis based on this approach is an angle independent flow velocity imaging method.
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Affiliation(s)
- Reza Pakdaman Zangabad
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Sophinese Iskander-Rizk
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Pim van der Meulen
- Department of Microelectronics, Delft University of Technology, Delft, The Netherlands
| | - Bram Meijlink
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Klazina Kooiman
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Tianshi Wang
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
- Department of Imaging Science and Physics, Delft University of Technology, Delft, The Netherlands
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Gijs van Soest
- Biomedical Engineering, Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
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24
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Rooij TV, Beekers I, Lattwein KR, van der Steen AFW, de Jong N, Kooiman K. Corrections to "Vibrational Responses of Bound and Nonbound Targeted Lipid-Coated Single Microbubbles". IEEE Trans Ultrason Ferroelectr Freq Control 2021; 68:2319. [PMID: 33687841 DOI: 10.1109/tuffc.2021.3064751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In the above article [1], the authors regret that there was a mistake in calculating the mol% of the microbubble coating composition. For all experiments, the unit in mg/mL was utilized and the conversion mistake only came when converting to mol% in order to define the ratio between the coating formulation components. The correct molecular weight of PEG-40 stearate is 2046.54 g/mol [2], [3], not 328.53 g/mol. On page 786, paragraph II-A, it should read "The coating was composed of 84.8 mol% DSPC (P6517, Sigma-Aldrich, Zwijndrecht, The Netherlands) or DPPC (850355, Avanti Polar Lipids, Alabaster, AL, USA); 8.2 mol% polyoxyethylene-40-stearate (PEG-40 stearate, P3440, Sigma-Aldrich); 5.9 mol% 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[carboxy(polyethylene glycol)-2000] (DSPE-PEG(2000), 880125, Avanti Polar Lipids); and 1.1 mol% 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[biotinyl(polyethylene glycol)-2000] (DSPE-PEG(2000)-biotin, 880129, Avanti Polar Lipids)."
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25
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van Rooij T, Luan Y, Renaud G, van der Steen AFW, Versluis M, de Jong N, Kooiman K. Corrigendum to "Non-linear Response and Viscoelastic Properties of Lipid-Coated Microbubbles: DSPC versus DPPC" (Ultrasound Med Biol 2015;41:1432-1445). Ultrasound Med Biol 2021; 47:1640. [PMID: 33731257 DOI: 10.1016/j.ultrasmedbio.2021.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/14/2021] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Affiliation(s)
- Tom van Rooij
- Department of Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Ying Luan
- Department of Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Guillaume Renaud
- Department of Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Sorbonne Universités, UPMC Univ Paris 06, CNRS UMR 7371, INSERM UMR S 1146, Laboratoire d'Imagerie Biomédicale, Paris, France
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Technical University Delft, Delft, The Netherlands
| | - Michel Versluis
- Physics of Fluids Group, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Technical University Delft, Delft, The Netherlands; Interuniversity Cardiology Institute of The Netherlands, Utrecht, The Netherlands
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
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26
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Kokhuis TJA, Garbin V, Kooiman K, Naaijkens BA, Juffermans LJM, Kamp O, van der Steen AFW, Versluis M, de Jong N. Corrigendum to "Secondary Bjerknes Forces Deform Targeted Microbubbles" (Ultrasound Med Biol 2013;39:490-506). Ultrasound Med Biol 2021; 47:1639. [PMID: 33731258 DOI: 10.1016/j.ultrasmedbio.2021.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 02/14/2021] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Affiliation(s)
- Tom J A Kokhuis
- Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands
| | - Valeria Garbin
- Department of Chemical Engineering, Imperial College London, London, UK
| | - Klazina Kooiman
- Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Benno A Naaijkens
- Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands; Department of Pathology, VU University Medical Center, Amsterdam, The Netherlands
| | - Lynda J M Juffermans
- Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands; Department of Physiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Otto Kamp
- Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands; Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands
| | - Antonius F W van der Steen
- Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands
| | - Michel Versluis
- Physics of Fluids Group and MIRA Institute of Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Nico de Jong
- Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Interuniversity Cardiology Institute of the Netherlands, Utrecht, The Netherlands
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27
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Kokhuis TJA, Skachkov I, Naaijkens BA, Juffermans LJM, Kamp O, Kooiman K, van der Steen AFW, Versluis M, de Jong N. Corrigendum for "Intravital microscopy of localized stem cell delivery using microbubbles and acoustic radiation force" (Vol. 112, Issue 1, pp. 220-227). Biotechnol Bioeng 2021; 118:2386. [PMID: 34014566 DOI: 10.1002/bit.27727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Tom J A Kokhuis
- Erasmus MC, Biomedical Engineering, Rotterdam, Zuid-Holland, Netherlands
| | - Ilya Skachkov
- Erasmus MC, Biomedical Engineering, Rotterdam, Zuid-Holland, Netherlands
| | - Benno A Naaijkens
- Amsterdam UMC Locatie VUmc, Pathology, Amsterdam, Noord-Holland, Netherlands
| | | | - Otto Kamp
- Amsterdam UMC Locatie VUmc, Cardiology, Amsterdam, Noord-Holland, Netherlands
| | - Klazina Kooiman
- Erasmus MC, Biomedical Engineering, Rotterdam, Zuid-Holland, Netherlands
| | | | - Michel Versluis
- University of Twente, Physics of Fluids Group and MIRA Institute of Biomedical Technology and Technical Medicine, Enschede, Overijssel, Netherlands
| | - Nico de Jong
- Erasmus MC, Biomedical Engineering, Rotterdam, Zuid-Holland, Netherlands
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28
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Tomaniak M, Katagiri Y, Modolo R, de Silva R, Khamis RY, Bourantas CV, Torii R, Wentzel JJ, Gijsen FJH, van Soest G, Stone PH, West NEJ, Maehara A, Lerman A, van der Steen AFW, Lüscher TF, Virmani R, Koenig W, Stone GW, Muller JE, Wijns W, Serruys PW, Onuma Y. Vulnerable plaques and patients: state-of-the-art. Eur Heart J 2021; 41:2997-3004. [PMID: 32402086 DOI: 10.1093/eurheartj/ehaa227] [Citation(s) in RCA: 82] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/01/2019] [Accepted: 03/26/2020] [Indexed: 01/21/2023] Open
Abstract
Despite advanced understanding of the biology of atherosclerosis, coronary heart disease remains the leading cause of death worldwide. Progress has been challenging as half of the individuals who suffer sudden cardiac death do not experience premonitory symptoms. Furthermore, it is well-recognized that also a plaque that does not cause a haemodynamically significant stenosis can trigger a sudden cardiac event, yet the majority of ruptured or eroded plaques remain clinically silent. In the past 30 years since the term 'vulnerable plaque' was introduced, there have been major advances in the understanding of plaque pathogenesis and pathophysiology, shifting from pursuing features of 'vulnerability' of a specific lesion to the more comprehensive goal of identifying patient 'cardiovascular vulnerability'. It has been also recognized that aside a thin-capped, lipid-rich plaque associated with plaque rupture, acute coronary syndromes (ACS) are also caused by plaque erosion underlying between 25% and 60% of ACS nowadays, by calcified nodule or by functional coronary alterations. While there have been advances in preventive strategies and in pharmacotherapy, with improved agents to reduce cholesterol, thrombosis, and inflammation, events continue to occur in patients receiving optimal medical treatment. Although at present the positive predictive value of imaging precursors of the culprit plaques remains too low for clinical relevance, improving coronary plaque imaging may be instrumental in guiding pharmacotherapy intensity and could facilitate optimal allocation of novel, more aggressive, and costly treatment strategies. Recent technical and diagnostic advances justify continuation of interdisciplinary research efforts to improve cardiovascular prognosis by both systemic and 'local' diagnostics and therapies. The present state-of-the-art document aims to present and critically appraise the latest evidence, developments, and future perspectives in detection, prevention, and treatment of 'high-risk' plaques occurring in 'vulnerable' patients.
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Affiliation(s)
- Mariusz Tomaniak
- Department of Cardiology, Erasmus Medical Centre, Thorax Centre, Rotterdam, The Netherlands.,First Department of Cardiology, Medical University of Warsaw, Warsaw, Poland
| | - Yuki Katagiri
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
| | - Rodrigo Modolo
- Department of Clinical and Experimental Cardiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.,Cardiology Division, Department of Internal Medicine, University of Campinas (UNICAMP), Campinas, Brazil
| | - Ranil de Silva
- National Heart and Lung Institute, Imperial College London, London, UK.,NIHR Cardiovascular Biomedical Research Unit, Institute of Cardiovascular Medicine and Science, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - Ramzi Y Khamis
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Christos V Bourantas
- Department of Cardiology, Barts Heart Centre, Barts Health NHS Trust, London EC1A 7BE, UK.,William Harvey Research Institute, Queen Mary University London, Charterhouse Square, London EC1M 6BQ, UK.,Institute of Cardiovascular Sciences, University College London, 62 Huntley St, Fitzrovia, London WC1E 6DD, UK
| | - Ryo Torii
- Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK
| | - Jolanda J Wentzel
- Department of Cardiology, Biomedical Engineering, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Frank J H Gijsen
- Department of Biomedical Engineering, Erasmus Medical Centre, Thorax Centre, Rotterdam, The Netherlands
| | - Gijs van Soest
- Department of Cardiology, Biomedical Engineering, Erasmus Medical Centre, Rotterdam, The Netherlands
| | - Peter H Stone
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Nick E J West
- Department of Interventional Cardiology, Royal Papworth Hospital, Papworth Rd, Trumpington, Cambridge CB2 0AY, UK
| | - Akiko Maehara
- Division of Cardiology, New York-Presbyterian Hospital, Columbia University Medical Center, New York, NY, USA.,Clinical Trials Centre, Cardiovascular Research Foundation, New York, NY, USA
| | - Amir Lerman
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Antonius F W van der Steen
- Department of Cardiology, Biomedical Engineering, Erasmus Medical Centre, Rotterdam, The Netherlands.,Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,Department of Imaging Physics, Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Thomas F Lüscher
- Royal Brompton and Harefield Hospital Trust, Imperial College London, , London, UK.,Centre for Molecular Cardiology, University of Zurich, Zurich, Switzerland
| | | | - Wolfgang Koenig
- Klinik für Herz- und Kreislauferkrankungen, Deutsches Herzzentrum München, Technische Universität München, Munich, Germany.,DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance, Munich, Germany.,Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - Gregg W Stone
- Division of Cardiology, New York-Presbyterian Hospital, Columbia University Medical Center, New York, NY, USA.,Clinical Trials Centre, Cardiovascular Research Foundation, New York, NY, USA
| | - James E Muller
- Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - William Wijns
- The Lambe Institute for Translational Medicine and Curam, National University of Ireland, Galway, Ireland.,Saolta University Healthcare Group, Galway, Ireland
| | - Patrick W Serruys
- National Heart and Lung Institute, Imperial College London, London, UK.,Department of Cardiology, National University of Ireland, Galway, Ireland
| | - Yoshinobu Onuma
- Department of Cardiology, National University of Ireland, Galway, Ireland
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29
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Kooiman K, Foppen-Harteveld M, van der Steen AFW, de Jong N. Corrigendum to "Sonoporation of endothelial cells by vibrating targeted microbubbles" [Journal of Controlled Release 154 (2011) 35-41]. J Control Release 2021; 332:516. [PMID: 33657361 DOI: 10.1016/j.jconrel.2021.02.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 02/21/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, the Netherlands.
| | | | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, the Netherlands; Interuniversity Cardiology Institute of the Netherlands, Utrecht, the Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, the Netherlands; Interuniversity Cardiology Institute of the Netherlands, Utrecht, the Netherlands; Physics of Fluids Group, University of Twente, Enschede, the Netherlands
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30
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Meester EJ, de Blois E, Krenning BJ, van der Steen AFW, Norenberg JP, van Gaalen K, Bernsen MR, de Jong M, van der Heiden K. Autoradiographical assessment of inflammation-targeting radioligands for atherosclerosis imaging: potential for plaque phenotype identification. EJNMMI Res 2021; 11:27. [PMID: 33730311 PMCID: PMC7969682 DOI: 10.1186/s13550-021-00772-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Accepted: 03/05/2021] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Many radioligands have been developed for the visualization of atherosclerosis by targeting inflammation. However, interpretation of in vivo signals is often limited to plaque identification. We evaluated binding of some promising radioligands in an in vitro approach in atherosclerotic plaques with different phenotypes. METHODS Tissue sections of carotid endarterectomy tissue were characterized as early plaque, fibro-calcific plaque, or phenotypically vulnerable plaque. In vitro binding assays for the radioligands [111In]In-DOTATATE; [111In]In-DOTA-JR11; [67Ga]Ga-Pentixafor; [111In]In-DANBIRT; and [111In]In-EC0800 were conducted, the expression of the radioligand targets was assessed via immunohistochemistry. Radioligand binding and expression of radioligand targets was investigated and compared. RESULTS In sections characterized as vulnerable plaque, binding was highest for [111In]In-EC0800; followed by [111In]In-DANBIRT; [67Ga]Ga-Pentixafor; [111In]In-DOTA-JR11; and [111In]In-DOTATATE (0.064 ± 0.036; 0.052 ± 0.029; 0.011 ± 0.003; 0.0066 ± 0.0021; 0.00064 ± 0.00014 %Added activity/mm2, respectively). Binding of [111In]In-DANBIRT and [111In]In-EC0800 was highest across plaque phenotypes, binding of [111In]In-DOTA-JR11 and [67Ga]Ga-Pentixafor differed most between plaque phenotypes. Binding of [111In]In-DOTATATE was the lowest across plaque phenotypes. The areas positive for cells expressing the radioligand's target differed between plaque phenotypes for all targets, with lowest percentage area of expression in early plaque sections and highest in phenotypically vulnerable plaque sections. CONCLUSIONS Radioligands targeting inflammatory cell markers showed different levels of binding in atherosclerotic plaques and among plaque phenotypes. Different radioligands might be used for plaque detection and discerning early from vulnerable plaque. [111In]In-EC0800 and [111In]In-DANBIRT appear most suitable for plaque detection, while [67Ga]Ga-Pentixafor and [111In]In-DOTA-JR11 might be best suited for differentiation between plaque phenotypes.
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Affiliation(s)
- Eric J Meester
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Erik de Blois
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | | | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Jeff P Norenberg
- Radiopharmaceutical Sciences, University of New Mexico, Albuquerque, NM, USA
| | - Kim van Gaalen
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Monique R Bernsen
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Marion de Jong
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Kim van der Heiden
- Department of Biomedical Engineering, Thorax Center, Erasmus Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
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Meijlink B, Skachkov I, van der Steen AFW, de Jong N, Kooiman K. The Preparation of Chicken Ex Ovo Embryos and Chorioallantoic Membrane Vessels as In Vivo Model for Contrast-Enhanced Ultrasound Imaging and Microbubble-Mediated Drug Delivery Studies. J Vis Exp 2021. [PMID: 33645558 DOI: 10.3791/62076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The chicken embryo and the blood-vessel rich chorioallantoic membrane (CAM) is a valuable in vivo model to investigate biomedical processes, new ultrasound pulsing schemes, or novel transducers for contrast-enhanced ultrasound imaging and microbubble-mediated drug delivery. The reasons for this are the accessibility of the embryo and vessel network of the CAM as well as the low costs of the model. An important step to get access to the embryo and CAM vessels is to take the egg content out of the eggshell. In this protocol, three methods for taking the content out of the eggshell between day 5 and 8 of incubation are described thus allowing the embryos to develop inside the eggshell up to these days. The described methods only require simple tools and equipment and yield a higher survival success rate of 90% for 5-day, 75% for 6-day, 50% for 7-day, and 60% for 8-day old incubated eggs in comparison to ex ovo cultured embryos (~50%). The protocol also describes how to inject cavitation nuclei, such as microbubbles, into the CAM vascular system, how to separate the membrane containing the embryo and CAM from the rest of the egg content for optically transparent studies, and how to use the chicken embryo and CAM in a variety of short-term ultrasound experiments. The in vivo chicken embryo and CAM model is extremely relevant to investigate novel imaging protocols, ultrasound contrast agents, and ultrasound pulsing schemes for contrast-enhanced ultrasound imaging, and to unravel the mechanisms of ultrasound-mediated drug delivery.
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Affiliation(s)
- Bram Meijlink
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam;
| | - Ilya Skachkov
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam;
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Hoogendoorn A, Kok AM, Hartman EMJ, de Nisco G, Casadonte L, Chiastra C, Coenen A, Korteland SA, Van der Heiden K, Gijsen FJH, Duncker DJ, van der Steen AFW, Wentzel JJ. Multidirectional wall shear stress promotes advanced coronary plaque development: comparing five shear stress metrics. Cardiovasc Res 2021; 116:1136-1146. [PMID: 31504238 PMCID: PMC7177495 DOI: 10.1093/cvr/cvz212] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/15/2019] [Accepted: 08/20/2019] [Indexed: 01/02/2023] Open
Abstract
Aims Atherosclerotic plaque development has been associated with wall shear stress (WSS). However, the multidirectionality of blood flow, and thus of WSS, is rarely taken into account. The purpose of this study was to comprehensively compare five metrics that describe (multidirectional) WSS behaviour and assess how WSS multidirectionality affects coronary plaque initiation and progression. Methods and results Adult familial hypercholesterolaemic pigs (n = 10) that were fed a high-fat diet, underwent imaging of the three main coronary arteries at three-time points [3 (T1), 9 (T2), and 10–12 (T3) months]. Three-dimensional geometry of the arterial lumen, in combination with local flow velocity measurements, was used to calculate WSS at T1 and T2. For analysis, arteries were divided into 3 mm/45° sectors (n = 3648). Changes in wall thickness and final plaque composition were assessed with near-infrared spectroscopy–intravascular ultrasound, optical coherence tomography imaging, and histology. Both in pigs with advanced and mild disease, the highest plaque progression rate was exclusively found at low time-averaged WSS (TAWSS) or high multidirectional WSS regions at both T1 and T2. However, the eventually largest plaque growth was located in regions with initial low TAWSS or high multidirectional WSS that, over time, became exposed to high TAWSS or low multidirectional WSS at T2. Besides plaque size, also the presence of vulnerable plaque components at the last time point was related to low and multidirectional WSS. Almost all WSS metrics had good predictive values for the development of plaque (47–50%) and advanced fibrous cap atheroma (FCA) development (59–61%). Conclusion This study demonstrates that low and multidirectional WSS promote both initiation and progression of coronary atherosclerotic plaques. The high-predictive values of the multidirectional WSS metrics for FCA development indicate their potential as an additional clinical marker for the vulnerable disease.
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Affiliation(s)
- Ayla Hoogendoorn
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Annette M Kok
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Eline M J Hartman
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Giuseppe de Nisco
- PoliToMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Lorena Casadonte
- Department of Biomedical Engineering and Physics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Claudio Chiastra
- PoliToMed Lab, Department of Mechanical and Aerospace Engineering, Politecnico di Torino, Turin, Italy
| | - Adriaan Coenen
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
- Department of Radiology, Erasmus MC, Rotterdam, The Netherlands
| | - Suze-Anne Korteland
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Kim Van der Heiden
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Frank J H Gijsen
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Dirk J Duncker
- Department of Cardiology, Experimental Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
| | - Jolanda J Wentzel
- Department of Cardiology, Biomedical Engineering, Erasmus MC, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands
- Corresponding author. Tel: +31 10 7044 044; fax: +31 10 7044 720, E-mail:
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Soloukey S, Vincent AJPE, Satoer DD, Mastik F, Smits M, Dirven CMF, Strydis C, van der Steen AFW, Bosch JG, De Zeeuw CI, Koekkoek SKE, Kruizinga P. NIMG-19. USING FUNCTIONAL ULTRASOUND (FUS) TO MAP BRAIN FUNCTIONALITY AND TUMOR VASCULATURE WITH MICROMETER-MILLISECOND PRECISION. Neuro Oncol 2020. [DOI: 10.1093/neuonc/noaa215.632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
OBJECTIVE
In the early 20th century, Dr. Cushing first demonstrated the use of electrical stimulation mapping (ESM) to define motor and sensory cortices during neurosurgical procedures. Essentially, little has changed in what guides a neurosurgeon’s intra-operative decision-making since. Inherent limitations of ESM such as limited depth penetration and risk of seizure elicitation, warrant the development of new image-guided resection tools. Here, we present functional Ultrasound (fUS)-imaging as a new, high-resolution tool to guide intra-operative decision-making during awake tumor removal.
METHODS
fUS relies on high-frame-rate ultrasound, which offers images at thousands of frames-per-second. As such, fUS is sensitive to very small motions caused by vascular dynamics (µDoppler), allowing measurements of changes in cerebral blood volume (CBV). This facilitates the possibility to 1) detect functional response, as CBV-changes reflect changes in metabolism of activated neurons through neurovascular coupling and 2) visualize high-resolution vascular morphology of tumor and healthy tissue. During conventional awake craniotomy surgery, n= 10 patients were asked to perform 60s functional tasks to elicit cortical responses. Simultaneously, a conventional 5 MHz ultrasound probe connected to an experimental acquisition system, was placed over ESM-defined functional areas. After image acquisition, correlation analyses with the corresponding tasks revealed functional and non-functional areas. In addition, 3D vascular maps were reconstructed from subsequent 2D-Power Doppler Images (PDIs).
RESULTS
fUS was able to detect functional areas as activated using conventional motor tasks, as well as complex language-related tasks. In addition, both 2D-PDIs and 3D-reconstructions revealed the ability of fUS to detect unique high-resolution onco-vascular characteristics in high- and low-grade malignancies. In all cases, images were acquired with micrometer-millisecond (300 µm, 1.5-2.0 msec) precision at imaging depths > 5 cm.
CONCLUSIONS
Applying fUS-imaging successfully in this awake craniotomy series serves as a clear demonstration of the technique’s revolutionary potential for maximizing safe tumor removal.
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Affiliation(s)
- Sadaf Soloukey
- Dept. of Neurosurgery, Erasmus MC, Rotterdam, The Netherlands
| | | | - Djaina D Satoer
- Dept. of Neurosurgery, Erasmus MC, Rotterdam, The Netherlands
| | - Frits Mastik
- Dept. of Biomedical Engineering - Thorax Centre, Rotterdam, The Netherlands
| | - Marion Smits
- Dept. of Radiology and Nuclear Medicine, Rotterdam, The Netherlands
| | | | | | | | - Johannes G Bosch
- Dept. of Biomedical Engineering - Thorax Centre, Rotterdam, The Netherlands
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Keijzer LBH, Caenen A, Voorneveld J, Strachinaru M, Bowen DJ, van de Wouw J, Sorop O, Merkus D, Duncker DJ, van der Steen AFW, de Jong N, Bosch JG, Vos HJ. A direct comparison of natural and acoustic-radiation-force-induced cardiac mechanical waves. Sci Rep 2020; 10:18431. [PMID: 33116234 PMCID: PMC7595170 DOI: 10.1038/s41598-020-75401-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 10/15/2020] [Indexed: 12/30/2022] Open
Abstract
Natural and active shear wave elastography (SWE) are potential ultrasound-based techniques to non-invasively assess myocardial stiffness, which could improve current diagnosis of heart failure. This study aims to bridge the knowledge gap between both techniques and discuss their respective impacts on cardiac stiffness evaluation. We recorded the mechanical waves occurring after aortic and mitral valve closure (AVC, MVC) and those induced by acoustic radiation force throughout the cardiac cycle in four pigs after sternotomy. Natural SWE showed a higher feasibility than active SWE, which is an advantage for clinical application. Median propagation speeds of 2.5-4.0 m/s and 1.6-4.0 m/s were obtained after AVC and MVC, whereas ARF-based median speeds of 0.9-1.2 m/s and 2.1-3.8 m/s were reported for diastole and systole, respectively. The different wave characteristics in both methods, such as the frequency content, complicate the direct comparison of waves. Nevertheless, a good match was found in propagation speeds between natural and active SWE at the moment of valve closure, and the natural waves showed higher propagation speeds than in diastole. Furthermore, the results demonstrated that the natural waves occur in between diastole and systole identified with active SWE, and thus represent a myocardial stiffness in between relaxation and contraction.
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Affiliation(s)
- Lana B H Keijzer
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands.
| | - Annette Caenen
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands.
- IBiTech-bioMMeda, Ghent University, Ghent, Belgium.
- Cardiovascular Imaging and Dynamics Lab, Catholic University of Leuven, Leuven, Belgium.
| | - Jason Voorneveld
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Daniel J Bowen
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Jens van de Wouw
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Oana Sorop
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Daphne Merkus
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Dirk J Duncker
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
- Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Nico de Jong
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
- Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Johan G Bosch
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Hendrik J Vos
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
- Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
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Dweck MR, Maurovich-Horvat P, Leiner T, Cosyns B, Fayad ZA, Gijsen FJH, Van der Heiden K, Kooi ME, Maehara A, Muller JE, Newby DE, Narula J, Pontone G, Regar E, Serruys PW, van der Steen AFW, Stone PH, Waltenberger JL, Yuan C, Evans PC, Lutgens E, Wentzel JJ, Bäck M. Contemporary rationale for non-invasive imaging of adverse coronary plaque features to identify the vulnerable patient: a Position Paper from the European Society of Cardiology Working Group on Atherosclerosis and Vascular Biology and the European Association of Cardiovascular Imaging. Eur Heart J Cardiovasc Imaging 2020; 21:1177-1183. [PMID: 32887997 DOI: 10.1093/ehjci/jeaa201] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 06/30/2020] [Indexed: 12/27/2022] Open
Abstract
Atherosclerotic plaques prone to rupture may cause acute myocardial infarction (MI) but can also heal without causing an event. Certain common histopathological features, including inflammation, a thin fibrous cap, positive remodelling, a large necrotic core, microcalcification, and plaque haemorrhage are commonly found in plaques causing an acute event. Recent advances in imaging techniques have made it possible to detect not only luminal stenosis and overall coronary atherosclerosis burden but also to identify such adverse plaque characteristics. However, the predictive value of identifying individual adverse atherosclerotic plaques for future events has remained poor. In this Position Paper, the relationship between vulnerable plaque imaging and MI is addressed, mainly for non-invasive assessments but also for invasive imaging of adverse plaques in patients undergoing invasive coronary angiography. Dynamic changes in atherosclerotic plaque development and composition may indicate that an adverse plaque phenotype should be considered at the patient level rather than for individual plaques. Imaging of adverse plaque burden throughout the coronary vascular tree, in combination with biomarkers and biomechanical parameters, therefore holds promise for identifying subjects at increased risk of MI and for guiding medical and invasive treatment.
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Affiliation(s)
- Marc R Dweck
- British Heart Foundation/University Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, Scotland, UK
| | - Pál Maurovich-Horvat
- MTA-SE Cardiovascular Imaging Research Group, Heart and Vascular Center, Medical Imaging Centre, Semmelweis University, Budapest, Hungary
| | - Tim Leiner
- Department of Radiology, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Bernard Cosyns
- Centrum voor Hart en Vaatziekten (CHVZ) & In Vivo Molecular and Cellular Imaging (ICMI) Center, Universitair Ziekenhuis Brussel, Brussels, Belgium
| | - Zahi A Fayad
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Frank J H Gijsen
- Biomedical Engineering, Cardiology Department, Thorax Center, Erasmus MC, The Netherlands
| | - Kim Van der Heiden
- Biomedical Engineering, Cardiology Department, Thorax Center, Erasmus MC, The Netherlands
| | - M Eline Kooi
- Radiology and Nuclear Medicine, CARIM School for Cardiovascular Diseases, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Akiko Maehara
- Cardiology Department, Columbia University, New York, NY, USA
| | - James E Muller
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - David E Newby
- British Heart Foundation/University Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, Scotland, UK
| | - Jagat Narula
- Mount Sinai Hospital, Mount Sinai Heart, New York, NY, USA
| | | | | | - Patrick W Serruys
- Department of Cardiology, National University of Ireland, Galway, Ireland
| | | | - Peter H Stone
- Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Johannes L Waltenberger
- Department of Cardiovascular Medicine, University of Münster, WWU, Münster, Germany
- Department of Internal Medicine I, SRH Central Hospital, Suhl, Germany
| | - Chun Yuan
- Vascular Imaging Laboratory, School of Medicine, University of Washington, Seattle, USA
| | - Paul C Evans
- Department of Infection, Immunity and Cardiovascular Disease, University of Sheffield, Sheffield, UK
| | - Esther Lutgens
- Amsterdam UMC, Location AMC, Amsterdam, The Netherlands
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians University, Munich, Germany
- German Center for Cardiovascular Research (DZHK), partner site Munich Heart Alliance, Munich, Germany
| | - Jolanda J Wentzel
- Biomedical Engineering, Cardiology Department, Thorax Center, Erasmus MC, The Netherlands
| | - Magnus Bäck
- Karolinska University Hospital, Department of Cardiology, M85, 141 86 Stockholm, Sweden
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36
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Liu S, Neleman T, Hartman EMJ, Ligthart JMR, Witberg KT, van der Steen AFW, Wentzel JJ, Daemen J, van Soest G. Automated Quantitative Assessment of Coronary Calcification Using Intravascular Ultrasound. Ultrasound Med Biol 2020; 46:2801-2809. [PMID: 32636052 DOI: 10.1016/j.ultrasmedbio.2020.04.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Revised: 04/08/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
Coronary calcification represents a challenge in the treatment of coronary artery disease by stent placement. It negatively affects stent expansion and has been related to future adverse cardiac events. Intravascular ultrasound (IVUS) is known for its high sensitivity in detecting coronary calcification. At present, automated quantification of calcium as detected by IVUS is not available. For this reason, we developed and validated an optimized framework for accurate automated detection and quantification of calcified plaque in coronary atherosclerosis as seen by IVUS. Calcified lesions were detected by training a supported vector classifier per IVUS A-line on manually annotated IVUS images, followed by post-processing using regional information. We applied our framework to 35 IVUS pullbacks from each of the three commonly used IVUS systems. Cross-validation accuracy for each system was >0.9, and the testing accuracy was 0.87, 0.89 and 0.89 for the three systems. Using the detection result, we propose an IVUS calcium score, based on the fraction of calcium-positive A-lines in a pullback segment, to quantify the extent of calcified plaque. The high accuracy of the proposed classifier suggests that it may provide a robust and accurate tool to assess the presence and amount of coronary calcification and, thus, may play a role in image-guided coronary interventions.
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Affiliation(s)
- Shengnan Liu
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Tara Neleman
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Eline M J Hartman
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Jurgen M R Ligthart
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Karen T Witberg
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands; Department of Imaging Physics, Faculty of Applied Sciences, Delft University of Technology, The Netherlands; Shenzhen Institutes of Advanced Technologies, Shenzhen, China
| | - Jolanda J Wentzel
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Joost Daemen
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Gijs van Soest
- Department of Cardiology, Erasmus University Medical Center, Rotterdam, The Netherlands.
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Beekers I, Mastik F, Beurskens R, Tang PY, Vegter M, van der Steen AFW, de Jong N, Verweij MD, Kooiman K. High-Resolution Imaging of Intracellular Calcium Fluctuations Caused by Oscillating Microbubbles. Ultrasound Med Biol 2020; 46:2017-2029. [PMID: 32402676 DOI: 10.1016/j.ultrasmedbio.2020.03.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/11/2020] [Accepted: 03/26/2020] [Indexed: 06/11/2023]
Abstract
Ultrasound insonification of microbubbles can locally enhance drug delivery, but the microbubble-cell interaction remains poorly understood. Because intracellular calcium (Cai2+) is a key cellular regulator, unraveling the Cai2+ fluctuations caused by an oscillating microbubble provides crucial insight into the underlying bio-effects. Therefore, we developed an optical imaging system at nanometer and nanosecond resolution that can resolve Cai2+ fluctuations and microbubble oscillations. Using this system, we clearly distinguished three Cai2+ uptake profiles upon sonoporation of endothelial cells, which strongly correlated with the microbubble oscillation amplitude, severity of sonoporation and opening of cell-cell contacts. We found a narrow operating range for viable drug delivery without lethal cell damage. Moreover, adjacent cells were affected by a calcium wave propagating at 15 μm/s. With the unique optical system, we unraveled the microbubble oscillation behavior required for drug delivery and Cai2+ fluctuations, providing new insight into the microbubble-cell interaction to aid clinical translation.
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Affiliation(s)
- Inés Beekers
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands.
| | - Frits Mastik
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Robert Beurskens
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Phoei Ying Tang
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Merel Vegter
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Martin D Verweij
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Department of Imaging Physics, Delft University of Technology, Delft, The Netherlands
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus University Medical Center, Rotterdam, The Netherlands
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Voorneveld J, Keijzer LBH, Strachinaru M, Bowen DJ, Goei JSL, Ten Cate F, van der Steen AFW, de Jong N, Vos HJ, van den Bosch AE, Bosch JG. High-Frame-Rate Echo-Particle Image Velocimetry Can Measure the High-Velocity Diastolic Flow Patterns. Circ Cardiovasc Imaging 2020; 12:e008856. [PMID: 30939921 DOI: 10.1161/circimaging.119.008856] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Jason Voorneveld
- Department of Biomedical Engineering (J.V., L.B.H.K., A.F.W.v.d.S., N.d.J., H.J.V., J.G.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Lana B H Keijzer
- Department of Biomedical Engineering (J.V., L.B.H.K., A.F.W.v.d.S., N.d.J., H.J.V., J.G.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Mihai Strachinaru
- Department of Cardiology (M.S., D.J.B., J.S.L.G., F.T.C., A.E.v.d.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Daniel J Bowen
- Department of Cardiology (M.S., D.J.B., J.S.L.G., F.T.C., A.E.v.d.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Jeffrey S L Goei
- Department of Cardiology (M.S., D.J.B., J.S.L.G., F.T.C., A.E.v.d.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Folkert Ten Cate
- Department of Cardiology (M.S., D.J.B., J.S.L.G., F.T.C., A.E.v.d.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering (J.V., L.B.H.K., A.F.W.v.d.S., N.d.J., H.J.V., J.G.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - N de Jong
- Department of Biomedical Engineering (J.V., L.B.H.K., A.F.W.v.d.S., N.d.J., H.J.V., J.G.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Hendrik J Vos
- Department of Biomedical Engineering (J.V., L.B.H.K., A.F.W.v.d.S., N.d.J., H.J.V., J.G.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Annemien E van den Bosch
- Department of Cardiology (M.S., D.J.B., J.S.L.G., F.T.C., A.E.v.d.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
| | - Johan G Bosch
- Department of Biomedical Engineering (J.V., L.B.H.K., A.F.W.v.d.S., N.d.J., H.J.V., J.G.B.), Thorax Center, Erasmus Medical Center, Rotterdam, the Netherlands
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Voorneveld J, Saaid H, Schinkel C, Radeljic N, Lippe B, Gijsen FJH, van der Steen AFW, de Jong N, Claessens T, Vos HJ, Kenjeres S, Bosch JG. 4-D Echo-Particle Image Velocimetry in a Left Ventricular Phantom. Ultrasound Med Biol 2020; 46:805-817. [PMID: 31924419 DOI: 10.1016/j.ultrasmedbio.2019.11.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 10/29/2019] [Accepted: 11/30/2019] [Indexed: 06/10/2023]
Abstract
Left ventricular (LV) blood flow is an inherently complex time-varying 3-D phenomenon, where 2-D quantification often ignores the effect of out-of-plane motion. In this study, we describe high frame rate 4-D echocardiographic particle image velocimetry (echo-PIV) using a prototype matrix transesophageal transducer and a dynamic LV phantom for testing the accuracy of echo-PIV in the presence of complex flow patterns. Optical time-resolved tomographic PIV (tomo-PIV) was used as a reference standard for comparison. Echo-PIV and tomo-PIV agreed on the general profile of the LV flow patterns, but echo-PIV smoothed out the smaller flow structures. Echo-PIV also underestimated the flow rates at greater imaging depths, where the PIV kernel size and transducer point spread function were large relative to the velocity gradients. We demonstrate that 4-D echo-PIV could be performed in just four heart cycles, which would require only a short breath-hold, providing promising results. However, methods for resolving high velocity gradients in regions of poor spatial resolution are required before clinical translation.
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Affiliation(s)
- Jason Voorneveld
- Department of Biomedical Engineering, Thorax Center, Erasmus MC University Medical Center, Rotterdam, the Netherlands.
| | - Hicham Saaid
- Institute Biomedical Technology, Ghent University, Ghent, Belgium
| | - Christiaan Schinkel
- Transport Phenomena Section, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology; the Netherlands
| | | | | | - Frank J H Gijsen
- Department of Biomedical Engineering, Thorax Center, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thorax Center, Erasmus MC University Medical Center, Rotterdam, the Netherlands; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology, Delft, the Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thorax Center, Erasmus MC University Medical Center, Rotterdam, the Netherlands; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology, Delft, the Netherlands
| | - Tom Claessens
- Department of Materials, Textiles and Chemical Engineering, Ghent University, Ghent, Belgium
| | - Hendrik J Vos
- Department of Biomedical Engineering, Thorax Center, Erasmus MC University Medical Center, Rotterdam, the Netherlands; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology, Delft, the Netherlands
| | - Sasa Kenjeres
- Transport Phenomena Section, Department of Chemical Engineering, Faculty of Applied Sciences, Delft University of Technology; the Netherlands
| | - Johan G Bosch
- Department of Biomedical Engineering, Thorax Center, Erasmus MC University Medical Center, Rotterdam, the Netherlands
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40
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Cecchetti L, Wang T, Hoogendoorn A, Witberg KT, Ligthart JMR, Daemen J, van Beusekom HMM, Pfeiffer T, Huber RA, Wentzel JJ, van der Steen AFW, van Soest G. In-vitro and in-vivo imaging of coronary artery stents with Heartbeat OCT. Int J Cardiovasc Imaging 2020; 36:1021-1029. [PMID: 32112229 PMCID: PMC7228985 DOI: 10.1007/s10554-020-01796-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 02/11/2020] [Indexed: 11/12/2022]
Abstract
To quantify the impact of cardiac motion on stent length measurements with Optical Coherence Tomography (OCT) and to demonstrate in vivo OCT imaging of implanted stents, without motion artefacts. The study consists of: clinical data evaluation, simulations and in vivo tests. A comparison between OCT-measured and nominal stent lengths in 101 clinically acquired pullbacks was carried out, followed by a simulation of the effect of cardiac motion on stent length measurements, experimentally and computationally. Both a commercial system and a custom OCT, capable of completing a pullback between two consecutive ventricular contractions, were employed. A 13 mm long stent was implanted in the left anterior descending branch of two atherosclerotic swine and imaged with both OCT systems. The analysis of the clinical OCT images yielded an average difference of 1.1 ± 1.6 mm, with a maximum difference of 7.8 mm and the simulations replicated the statistics observed in clinical data. Imaging with the custom OCT, yielded an RMS error of 0.14 mm at 60 BPM with the start of the acquisition synchronized to the cardiac cycle. In vivo imaging with conventional OCT yielded a deviation of 1.2 mm, relative to the length measured on ex-vivo micro-CT, while the length measured in the pullback acquired by the custom OCT differed by 0.20 mm. We demonstrated motion artefact-free OCT-imaging of implanted stents, using ECG triggering and a rapid pullback.
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Affiliation(s)
- Leonardo Cecchetti
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Tianshi Wang
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Ayla Hoogendoorn
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Karen T Witberg
- Department of Cardiology, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Jurgen M R Ligthart
- Department of Cardiology, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Joost Daemen
- Department of Cardiology, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Heleen M M van Beusekom
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | | | - Robert A Huber
- Institut für Biomedizinische Optik, Universität Zu Lübeck, Lübeck, Germany
| | - Jolanda J Wentzel
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands
| | - Antonius F W van der Steen
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands.,Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.,Department of Imaging Science and Technology, Delft University of Technology, Delft, The Netherlands
| | - Gijs van Soest
- Biomedical Engineering, Thoraxcenter, Erasmus MC, P.O. Box 2040, 3000 CA, Rotterdam, The Netherlands.
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41
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Soloukey S, Vincent AJPE, Satoer DD, Mastik F, Smits M, Dirven CMF, Strydis C, Bosch JG, van der Steen AFW, De Zeeuw CI, Koekkoek SKE, Kruizinga P. Functional Ultrasound (fUS) During Awake Brain Surgery: The Clinical Potential of Intra-Operative Functional and Vascular Brain Mapping. Front Neurosci 2020; 13:1384. [PMID: 31998060 PMCID: PMC6962116 DOI: 10.3389/fnins.2019.01384] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 12/09/2019] [Indexed: 12/16/2022] Open
Abstract
Background and Purpose Oncological neurosurgery relies heavily on making continuous, intra-operative tumor-brain delineations based on image-guidance. Limitations of currently available imaging techniques call for the development of real-time image-guided resection tools, which allow for reliable functional and anatomical information in an intra-operative setting. Functional ultrasound (fUS), is a new mobile neuro-imaging tool with unprecedented spatiotemporal resolution, which allows for the detection of small changes in blood dynamics that reflect changes in metabolic activity of activated neurons through neurovascular coupling. We have applied fUS during conventional awake brain surgery to determine its clinical potential for both intra-operative functional and vascular brain mapping, with the ultimate aim of achieving maximum safe tumor resection. Methods During awake brain surgery, fUS was used to image tumor vasculature and task-evoked brain activation with electrocortical stimulation mapping (ESM) as a gold standard. For functional imaging, patients were presented with motor, language or visual tasks, while the probe was placed over (ESM-defined) functional brain areas. For tumor vascular imaging, tumor tissue (pre-resection) and tumor resection cavity (post-resection) were imaged by moving the hand-held probe along a continuous trajectory over the regions of interest. Results A total of 10 patients were included, with predominantly intra-parenchymal frontal and temporal lobe tumors of both low and higher histopathological grades. fUS was able to detect (ESM-defined) functional areas deep inside the brain for a range of functional tasks including language processing. Brain tissue could be imaged at a spatial and temporal resolution of 300 μm and 1.5-2.0 ms respectively, revealing real-time tumor-specific, and healthy vascular characteristics. Conclusion The current study presents the potential of applying fUS during awake brain surgery. We illustrate the relevance of fUS for awake brain surgery based on its ability to capture both task-evoked functional cortical responses as well as differences in vascular characteristics between tumor and healthy tissue. As current neurosurgical practice is still pre-dominantly leaning on inherently limited pre-operative imaging techniques for tumor resection-guidance, fUS enters the scene as a promising alternative that is both anatomically and physiologically informative.
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Affiliation(s)
- Sadaf Soloukey
- Department of Neurosurgery, Erasmus MC, Rotterdam, Netherlands.,Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands
| | | | - Djaina D Satoer
- Department of Neurosurgery, Erasmus MC, Rotterdam, Netherlands
| | - Frits Mastik
- Department of Biomedical Engineering, Thorax Centre, Erasmus MC, Rotterdam, Netherlands
| | - Marion Smits
- Department of Radiology and Nuclear Medicine, Erasmus MC, Rotterdam, Netherlands
| | | | | | - Johannes G Bosch
- Department of Biomedical Engineering, Thorax Centre, Erasmus MC, Rotterdam, Netherlands
| | | | - Chris I De Zeeuw
- Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands.,Netherlands Institute for Neuroscience, Royal Dutch Academy for Arts and Sciences, Amsterdam, Netherlands
| | | | - Pieter Kruizinga
- Department of Neuroscience, Erasmus MC, Rotterdam, Netherlands.,Department of Biomedical Engineering, Thorax Centre, Erasmus MC, Rotterdam, Netherlands
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42
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Keijzer LBH, Strachinaru M, Bowen DJ, Geleijnse ML, van der Steen AFW, Bosch JG, de Jong N, Vos HJ. Reproducibility of Natural Shear Wave Elastography Measurements. Ultrasound Med Biol 2019; 45:3172-3185. [PMID: 31564460 DOI: 10.1016/j.ultrasmedbio.2019.09.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 08/30/2019] [Accepted: 09/04/2019] [Indexed: 06/10/2023]
Abstract
For the quantification of myocardial function, myocardial stiffness can potentially be measured non-invasively using shear wave elastography. Clinical diagnosis requires high precision. In 10 healthy volunteers, we studied the reproducibility of the measurement of propagation speeds of shear waves induced by aortic and mitral valve closure (AVC, MVC). Inter-scan was slightly higher but in similar ranges as intra-scan variability (AVC: 0.67 m/s (interquartile range [IQR]: 0.40-0.86 m/s) versus 0.38 m/s (IQR: 0.26-0.68 m/s), MVC: 0.61 m/s (IQR: 0.26-0.94 m/s) versus 0.26 m/s (IQR: 0.15-0.46 m/s)). For AVC, the propagation speeds obtained on different day were not statistically different (p = 0.13). We observed different propagation speeds between 2 systems (AVC: 3.23-4.25 m/s [Zonare ZS3] versus 1.82-4.76 m/s [Philips iE33]), p = 0.04). No statistical difference was observed between observers (AVC: p = 0.35). Our results suggest that measurement inaccuracies dominate the variabilities measured among healthy volunteers. Therefore, measurement precision can be improved by averaging over multiple heartbeats.
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Affiliation(s)
- Lana B H Keijzer
- Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands.
| | - Mihai Strachinaru
- Biomedical Engineering, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Cardiology, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Dan J Bowen
- Cardiology, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | | | - Antonius F W van der Steen
- Cardiology, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Acoustical Wavefield Imaging, ImPhys, Delft University of Technology, The Netherlands
| | - Johan G Bosch
- Cardiology, Thorax Center, Erasmus MC, Rotterdam, The Netherlands
| | - Nico de Jong
- Cardiology, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Acoustical Wavefield Imaging, ImPhys, Delft University of Technology, The Netherlands
| | - Hendrik J Vos
- Cardiology, Thorax Center, Erasmus MC, Rotterdam, The Netherlands; Acoustical Wavefield Imaging, ImPhys, Delft University of Technology, The Netherlands
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43
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Hoogendoorn A, den Hoedt S, Hartman EMJ, Krabbendam-Peters I, Te Lintel Hekkert M, van der Zee L, van Gaalen K, Witberg KT, Dorst K, Ligthart JMR, Drouet L, Van der Heiden K, van Lennep JR, van der Steen AFW, Duncker DJ, Mulder MT, Wentzel JJ. Variation in Coronary Atherosclerosis Severity Related to a Distinct LDL (Low-Density Lipoprotein) Profile: Findings From a Familial Hypercholesterolemia Pig Model. Arterioscler Thromb Vasc Biol 2019; 39:2338-2352. [PMID: 31554418 PMCID: PMC6818985 DOI: 10.1161/atvbaha.119.313246] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVE In an adult porcine model of familial hypercholesterolemia (FH), coronary plaque development was characterized. To elucidate the underlying mechanisms of the observed inter-individual variation in disease severity, detailed lipoprotein profiles were determined. Approach and Results: FH pigs (3 years old, homozygous LDLR R84C mutation) received an atherogenic diet for 12 months. Coronary atherosclerosis development was monitored using serial invasive imaging and histology. A pronounced difference was observed between mildly diseased pigs which exclusively developed early lesions (maximal plaque burden, 25% [23%-34%]; n=5) and advanced-diseased pigs (n=5) which developed human-like, lumen intruding plaques (maximal plaque burden, 69% [57%-77%]) with large necrotic cores, intraplaque hemorrhage, and calcifications. Advanced-diseased pigs and mildly diseased pigs displayed no differences in conventional risk factors. Additional plasma lipoprotein profiling by size-exclusion chromatography revealed 2 different LDL (low-density lipoprotein) subtypes: regular and larger LDL. Cholesterol, sphingosine-1-phosphate, ceramide, and sphingomyelin levels were determined in these LDL-subfractions using standard laboratory techniques and high-pressure liquid chromatography mass-spectrometry analyses, respectively. At 3 months of diet, regular LDL of advanced-diseased pigs contained relatively more cholesterol (LDL-C; regular/larger LDL-C ratio 1.7 [1.3-1.9] versus 0.8 [0.6-0.9]; P=0.008) than mildly diseased pigs, while larger LDL contained more sphingosine-1-phosphate, ceramides, and sphingomyelins. Larger and regular LDL was also found in plasma of 3 patients with homozygous FH with varying LDL-C ratios. CONCLUSIONS In our adult FH pig model, inter-individual differences in atherosclerotic disease severity were directly related to the distribution of cholesterol and sphingolipids over a distinct LDL profile with regular and larger LDL shortly after the diet start. A similar LDL profile was detected in patients with homozygous FH.
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Affiliation(s)
- Ayla Hoogendoorn
- From the Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, the Netherlands (A.H., E.M.J.H., K.v.G., K.V.d.H., A.F.W.v.d.S., J.J.W.)
| | - Sandra den Hoedt
- Department of Internal Medicine, Laboratory of Vascular Medicine, Division of Pharmacology, Vascular & Metabolic Disease (S.d.H., L.v.d.Z., K.D., J.R.v.L., M.T.M.), Erasmus MC, Rotterdam, the Netherlands
| | - Eline M J Hartman
- From the Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, the Netherlands (A.H., E.M.J.H., K.v.G., K.V.d.H., A.F.W.v.d.S., J.J.W.)
| | - Ilona Krabbendam-Peters
- Department of Cardiology, Experimental Cardiology (I.K.-P., M.t.L.H., D.J.D.), Erasmus MC, Rotterdam, the Netherlands
| | - Maaike Te Lintel Hekkert
- Department of Cardiology, Experimental Cardiology (I.K.-P., M.t.L.H., D.J.D.), Erasmus MC, Rotterdam, the Netherlands
| | - Leonie van der Zee
- Department of Internal Medicine, Laboratory of Vascular Medicine, Division of Pharmacology, Vascular & Metabolic Disease (S.d.H., L.v.d.Z., K.D., J.R.v.L., M.T.M.), Erasmus MC, Rotterdam, the Netherlands
| | - Kim van Gaalen
- From the Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, the Netherlands (A.H., E.M.J.H., K.v.G., K.V.d.H., A.F.W.v.d.S., J.J.W.)
| | - Karen Th Witberg
- Department of Cardiology, Interventional Cardiology (K.T.W., J.M.R.L.), Erasmus MC, Rotterdam, the Netherlands
| | - Kristien Dorst
- Department of Internal Medicine, Laboratory of Vascular Medicine, Division of Pharmacology, Vascular & Metabolic Disease (S.d.H., L.v.d.Z., K.D., J.R.v.L., M.T.M.), Erasmus MC, Rotterdam, the Netherlands
| | - Jurgen M R Ligthart
- Department of Cardiology, Interventional Cardiology (K.T.W., J.M.R.L.), Erasmus MC, Rotterdam, the Netherlands
| | - Ludovic Drouet
- Department of Angiohematology, Hospital Lariboisiere, Paris, France (L.D.)
| | - Kim Van der Heiden
- From the Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, the Netherlands (A.H., E.M.J.H., K.v.G., K.V.d.H., A.F.W.v.d.S., J.J.W.)
| | - Jeanine Roeters van Lennep
- Department of Internal Medicine, Laboratory of Vascular Medicine, Division of Pharmacology, Vascular & Metabolic Disease (S.d.H., L.v.d.Z., K.D., J.R.v.L., M.T.M.), Erasmus MC, Rotterdam, the Netherlands
| | - Antonius F W van der Steen
- From the Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, the Netherlands (A.H., E.M.J.H., K.v.G., K.V.d.H., A.F.W.v.d.S., J.J.W.)
| | - Dirk J Duncker
- Department of Cardiology, Experimental Cardiology (I.K.-P., M.t.L.H., D.J.D.), Erasmus MC, Rotterdam, the Netherlands
| | - Monique T Mulder
- Department of Internal Medicine, Laboratory of Vascular Medicine, Division of Pharmacology, Vascular & Metabolic Disease (S.d.H., L.v.d.Z., K.D., J.R.v.L., M.T.M.), Erasmus MC, Rotterdam, the Netherlands
| | - Jolanda J Wentzel
- From the Department of Cardiology, Biomedical Engineering, Erasmus MC, Rotterdam, the Netherlands (A.H., E.M.J.H., K.v.G., K.V.d.H., A.F.W.v.d.S., J.J.W.)
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44
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Iskander-Rizk S, Wu M, Springeling G, van Beusekom HMM, Mastik F, Te Lintel Hekkert M, Beurskens RHSH, Hoogendoorn A, Hartman EMJ, van der Steen AFW, Wentzel JJ, van Soest G. In vivo intravascular photoacoustic imaging of plaque lipid in coronary atherosclerosis. EUROINTERVENTION 2019; 15:452-456. [PMID: 31113762 DOI: 10.4244/eij-d-19-00318] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Prospective identification of lipid-rich vulnerable plaque has remained an elusive goal. Intravascular photoacoustics, a hybrid optical and ultrasonic technology, was developed as a tool for lipid-rich plaque imaging. Here, we present the first in vivo images of lipid-rich coronary atherosclerosis acquired with this new technology in a large animal model, and relate them to independent catheter-based imaging and histology.
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Affiliation(s)
- Sophinese Iskander-Rizk
- Department of Cardiology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands
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45
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Beekers I, Lattwein KR, Kouijzer JJP, Langeveld SAG, Vegter M, Beurskens R, Mastik F, Verduyn Lunel R, Verver E, van der Steen AFW, de Jong N, Kooiman K. Combined Confocal Microscope and Brandaris 128 Ultra-High-Speed Camera. Ultrasound Med Biol 2019; 45:2575-2582. [PMID: 31262523 DOI: 10.1016/j.ultrasmedbio.2019.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/23/2019] [Accepted: 06/05/2019] [Indexed: 06/09/2023]
Abstract
Controlling microbubble-mediated drug delivery requires the underlying biological and physical mechanisms to be unraveled. To image both microbubble oscillation upon ultrasound insonification and the resulting cellular response, we developed an optical imaging system that can achieve the necessary nanosecond temporal and nanometer spatial resolutions. We coupled the Brandaris 128 ultra-high-speed camera (up to 25 million frames per second) to a custom-built Nikon A1R+ confocal microscope. The unique capabilities of this combined system are demonstrated with three experiments showing microbubble oscillation leading to either endothelial drug delivery, bacterial biofilm disruption, or structural changes in the microbubble coating. In conclusion, using this state-of-the-art optical imaging system, microbubble-mediated drug delivery can be studied with high temporal resolution to resolve microbubble oscillation and high spatial resolution and detector sensitivity to discern cellular response. Combining these two imaging technologies will substantially advance our knowledge on microbubble behavior and its role in drug delivery.
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Affiliation(s)
- Inés Beekers
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands.
| | - Kirby R Lattwein
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Joop J P Kouijzer
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Simone A G Langeveld
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Merel Vegter
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Robert Beurskens
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | - Frits Mastik
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
| | | | - Emma Verver
- Nikon Netherlands, Amsterdam, The Netherlands
| | - Antonius F W van der Steen
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Delft University of Technology, Delft, The Netherlands
| | - Nico de Jong
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Delft University of Technology, Delft, The Netherlands
| | - Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam, The Netherlands
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46
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Abstract
Imaging guidance is paramount to procedural success in minimally invasive interventions. Catheter-based therapies are the standard of care in the treatment of many cardiac disorders, including coronary artery disease, structural heart disease and electrophysiological conditions. Many of these diseases are caused by, or effect, a change in vasculature or cardiac tissue composition, which can potentially be detected by photoacoustic imaging. This review summarizes the state of the art in photoacoustic imaging approaches that have been proposed for intervention guidance in cardiovascular care. All of these techniques are currently in the preclinical phase. We will conclude with an outlook towards clinical applications.
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Affiliation(s)
- Sophinese Iskander-Rizk
- Department of Cardiology, Biomedical Engineering, Erasmus MC University Medical Center Rotterdam, Wytemaweg 80, 3015 CN Rotterdam, The Netherlands
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47
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Strachinaru M, Geleijnse ML, de Jong N, van den Bosch A, Michels M, Schinkel AFL, van der Steen AFW, Bosch JG, Vos HJ. Myocardial Stretch Post-atrial Contraction in Healthy Volunteers and Hypertrophic Cardiomyopathy Patients. Ultrasound Med Biol 2019; 45:1987-1998. [PMID: 31155404 DOI: 10.1016/j.ultrasmedbio.2019.04.031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Revised: 03/21/2019] [Accepted: 04/29/2019] [Indexed: 06/09/2023]
Abstract
In cardiac high-frame-rate color tissue Doppler imaging (TDI), a wave-like pattern travels over the interventricular septum (IVS) after atrial contraction. The propagation velocity of this myocardial stretch post-atrial contraction (MSPa) was proposed as a measure of left ventricular stiffness. The aim of our study was to investigate the MSPa in patients with hypertrophic cardiomyopathy (HCM) compared with healthy volunteers. Forty-two healthy volunteers and 33 HCM patients underwent high-frame-rate (>500 Hz) TDI apical echocardiography. MSPa was visible in TDI, M-mode and speckle tracking. When assuming a wave propagating with constant velocity, MSPa in healthy volunteers (1.6 ± 0.3 m/s) did not differ from that in HCM patients (1.8 ± 0.8 m/s, p = 0.14). Yet, in 42% of patients with HCM, the MSPa had a non-constant velocity over the wall: in the basal IVS, the velocity was lower (1.4 ± 0.5 m/s), and in the mid-IVS, much higher (6.1 ± 3.4 m/s, p < 0.0001), and this effect was related to the septal thickness. The reason is hypothesized to be the reaching of maximal longitudinal myocardial distension in HCM patients.
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Affiliation(s)
| | | | - Nico de Jong
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | | | - Michelle Michels
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | | | | | - Johan G Bosch
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | - Hendrik J Vos
- Thoraxcenter Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
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48
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Strachinaru M, Bosch JG, van Gils L, van Dalen BM, Schinkel AFL, van der Steen AFW, de Jong N, Michels M, Vos HJ, Geleijnse ML. Naturally Occurring Shear Waves in Healthy Volunteers and Hypertrophic Cardiomyopathy Patients. Ultrasound Med Biol 2019; 45:1977-1986. [PMID: 31079873 DOI: 10.1016/j.ultrasmedbio.2019.04.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 03/20/2019] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
We apply a high frame rate (over 500 Hz) tissue Doppler method to measure the propagation velocity of naturally occurring shear waves (SW) generated by aortic and mitral valves closure. The aim of this work is to demonstrate clinical relevance. We included 45 healthy volunteers and 43 patients with hypertrophic cardiomyopathy (HCM). The mitral SW (4.68 ± 0.66 m/s) was consistently faster than the aortic (3.51 ± 0.38 m/s) in all volunteers (p < 0.0001). In HCM patients, SW velocity correlated with E/e' ratio (r = 0.346, p = 0.04 for aortic SW and r = 0.667, p = 0.04 for mitral SW). A subgroup of 20 volunteers were matched for age and gender to 20 HCM patients. In HCM, the mean velocity of 5.1 ± 0.7 m/s for the aortic SW (3.61 ± 0.46 m/s in matched volunteers, p < 0.0001) and 6.88 ± 1.12 m/s for the mitral SW(4.65 ± 0.77 m/s in matched volunteers, p < 0.0001). A threshold of 4 m/s for the aortic SW correctly classified pathologic myocardium with a sensitivity of 95% and specificity of 90%. Naturally occurring SW can be used to assess differences between normal and pathologic myocardium.
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Affiliation(s)
| | - Johan G Bosch
- Department of Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | - Lennart van Gils
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Bas M van Dalen
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | | | | | - Nico de Jong
- Department of Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
| | - Michelle Michels
- Department of Cardiology, Erasmus MC, Rotterdam, The Netherlands
| | - Hendrik J Vos
- Department of Biomedical Engineering, Erasmus MC, Rotterdam, The Netherlands
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López-Marín A, Springeling G, Beurskens R, van Beusekom H, van der Steen AFW, Koch AD, Bouma BE, Huber R, van Soest G, Wang T. Motorized capsule for shadow-free OCT imaging and synchronous beam control. Opt Lett 2019; 44:3641-3644. [PMID: 31368932 DOI: 10.1364/ol.44.003641] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We demonstrate a tethered motorized capsule for unobstructed optical coherence tomography (OCT) imaging of the esophagus. By using a distal reflector design, we avoided the common shadow artifact induced by the motor wires. A synchronous driving technique features three types of beam-scanning modes of the capsule, i.e., circumferential beam scanning, localized beam scanning, and accurate beam positioning. We characterized these three modes and carried out ex vivo imaging experiments using the capsule. The results show that the capsule can potentially be a useful tool for diagnostic OCT imaging and OCT-guided biopsy and therapy of the esophagus.
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Beekers I, van Rooij T, van der Steen AFW, de Jong N, Verweij MD, Kooiman K. Acoustic Characterization of the CLINIcell for Ultrasound Contrast Agent Studies. IEEE Trans Ultrason Ferroelectr Freq Control 2019; 66:244-246. [PMID: 30452354 DOI: 10.1109/tuffc.2018.2881724] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ultrasound contrast agents consist of gas-filled coated microbubbles that oscillate upon ultrasound insonification. Their characteristic oscillatory response provides contrast enhancement for imaging and has the potential to locally enhance drug delivery. Since microbubble response depends on the local acoustic pressure, an ultrasound compatible chamber is needed to study their behavior and the underlying drug delivery pathways. In this study, we determined the amplitude of the acoustic pressure in the CLINIcell, an optically transparent chamber suitable for cell culture. The pressure field was characterized based on microbubble response recorded using the Brandaris 128 ultrahigh-speed camera and an iterative processing method. The results were compared to a control experiment performed in an OptiCell, which is conventionally used in microbubble studies. Microbubbles in the CLINIcell responded in a controlled manner, comparable to those in the OptiCell. For frequencies from 1 to 4 MHz, the mean pressure amplitude was -5.4 dB with respect to the externally applied field. The predictable ultrasound pressure demonstrates the potential of the CLINIcell as an optical, ultrasound, and cell culture compatible device to study microbubble oscillation behavior and ultrasound-mediated drug delivery.
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