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Yang S, Hu S. Perspectives on endoscopic functional photoacoustic microscopy. APPLIED PHYSICS LETTERS 2024; 125:030502. [PMID: 39022117 PMCID: PMC11251735 DOI: 10.1063/5.0201691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2024] [Accepted: 06/27/2024] [Indexed: 07/20/2024]
Abstract
Endoscopy, enabling high-resolution imaging of deep tissues and internal organs, plays an important role in basic research and clinical practice. Recent advances in photoacoustic microscopy (PAM), demonstrating excellent capabilities in high-resolution functional imaging, have sparked significant interest in its integration into the field of endoscopy. However, there are challenges in achieving functional PAM in the endoscopic setting. This Perspective article discusses current progress in the development of endoscopic PAM and the challenges related to functional measurements. Then, it points out potential directions to advance endoscopic PAM for functional imaging by leveraging fiber optics, microfabrication, optical engineering, and computational approaches. Finally, it highlights emerging opportunities for functional endoscopic PAM in basic and translational biomedicine.
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Affiliation(s)
- Shuo Yang
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA
| | - Song Hu
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, Missouri 63130, USA
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2
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Wang X, Xie Z, Lin R, Shu C, Lv S, Guo P, Xu H, Zhang J, Dong L, Gong X. Saliency enhancement method for photoacoustic molecular imaging based on Grüneisen relaxation nonlinear effect. JOURNAL OF BIOPHOTONICS 2024; 17:e202400004. [PMID: 38531622 DOI: 10.1002/jbio.202400004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 02/27/2024] [Accepted: 03/17/2024] [Indexed: 03/28/2024]
Abstract
Photoacoustic molecular imaging technology has a wide range of applications in biomedical research. In practical scenarios, both the probes and blood generate signals, resulting in the saliency of the probes in the blood environment being diminished, impacting imaging quality. Although several methods have been proposed for saliency enhancement, they inevitably suffer from moderate generality and detection speed. The Grüneisen relaxation (GR) nonlinear effect offers an alternative for enhancing saliency and can improve generality and speed. In this article, the excitation and detection efficiencies are optimized to enhance the GR signal amplitude. Experimental studies show that the saliency of the probe is enhanced. Moreover, the issue of signal aliasing is studied to ensure the accuracy of enhancement results in the tissues. In a word, the feasibility of the GR-based imaging method in saliency enhancement is successfully demonstrated in the study, showing the superiorities of good generality and detection speed.
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Affiliation(s)
- Xiatian Wang
- Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Zhihua Xie
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Riqiang Lin
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Chengyou Shu
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Shengmiao Lv
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Pengkun Guo
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Haoxing Xu
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Jinke Zhang
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
| | - Liquan Dong
- Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China
- Yangtze Delta Region Academy of Beijing Institute of Technology, Jiaxing, China
| | - Xiaojing Gong
- Research Center for Biomedical Optics and Molecular Imaging, Key Laboratory of Biomedical Imaging Science and System, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
- Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, Shenzhen Institute of Advanced Technology, Chinese Academy of Science, Shenzhen, China
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Riksen JJM, Nikolaev AV, van Soest G. Photoacoustic imaging on its way toward clinical utility: a tutorial review focusing on practical application in medicine. JOURNAL OF BIOMEDICAL OPTICS 2023; 28:121205. [PMID: 37304059 PMCID: PMC10249868 DOI: 10.1117/1.jbo.28.12.121205] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/12/2023] [Accepted: 05/18/2023] [Indexed: 06/13/2023]
Abstract
Significance Photoacoustic imaging (PAI) enables the visualization of optical contrast with ultrasonic imaging. It is a field of intense research, with great promise for clinical application. Understanding the principles of PAI is important for engineering research and image interpretation. Aim In this tutorial review, we lay out the imaging physics, instrumentation requirements, standardization, and some practical examples for (junior) researchers, who have an interest in developing PAI systems and applications for clinical translation or applying PAI in clinical research. Approach We discuss PAI principles and implementation in a shared context, emphasizing technical solutions that are amenable to broad clinical deployment, considering factors such as robustness, mobility, and cost in addition to image quality and quantification. Results Photoacoustics, capitalizing on endogenous contrast or administered contrast agents that are approved for human use, yields highly informative images in clinical settings, which can support diagnosis and interventions in the future. Conclusion PAI offers unique image contrast that has been demonstrated in a broad set of clinical scenarios. The transition of PAI from a "nice-to-have" to a "need-to-have" modality will require dedicated clinical studies that evaluate therapeutic decision-making based on PAI and consideration of the actual value for patients and clinicians, compared with the associated cost.
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Affiliation(s)
- Jonas J. M. Riksen
- Erasmus University Medical Center, Department of Cardiology, Rotterdam, The Netherlands
| | - Anton V. Nikolaev
- Erasmus University Medical Center, Department of Cardiology, Rotterdam, The Netherlands
| | - Gijs van Soest
- Erasmus University Medical Center, Department of Cardiology, Rotterdam, The Netherlands
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4
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Lin R, Zhang Q, Lv S, Zhang J, Wang X, Shi D, Gong X, Lam KH. Miniature intravascular photoacoustic endoscopy with coaxial excitation and detection. JOURNAL OF BIOPHOTONICS 2023; 16:e202200269. [PMID: 36510391 DOI: 10.1002/jbio.202200269] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/08/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
Recent research pointed out that the degree of inflammation in the adventitia could correlate with the severity of atherosclerotic plaques. Intravascular photoacoustic endoscopy can provide the information of arterial morphology and plaque composition, and even detecting the inflammation. However, most reported work used a noncoaxial configuration for the photoacoustic catheter design, which formed a limited light-sound overlap area for imaging so as to miss the adventitia information. Here we developed a novel 0.9 mm-diameter intravascular photoacoustic catheter with coaxial excitation and detection to resolve the aforementioned issue. A miniature hollow ultrasound transducer with a 0.18 mm-diameter orifice in the center was successfully fabricated. To show the significance and merits of our design, phantom and ex vivo imaging experiments were conducted on both coaxial and noncoaxial catheters for comparison. The results demonstrated that the coaxial catheter exhibited much better photoacoustic/ultrasound imaging performance from the intima to the adventitia.
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Affiliation(s)
- Riqiang Lin
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
- Research Center for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Qi Zhang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Shengmiao Lv
- Research Center for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Jiaming Zhang
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Xiatian Wang
- Research Center for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Dongliang Shi
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Xiaojing Gong
- Research Center for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Guangdong Provincial Key Laboratory of Biomedical Optical Imaging Technology, CAS Key Laboratory of Health Informatics, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Kwok-Ho Lam
- Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong
- Centre for Medical and Industrial Ultrasonics, James Watt School of Engineering, University of Glasgow, Glasgow, Scotland, UK
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Yuan Y, Zhang G, Chen Y, Ni H, Li M, Sturek M, Cheng JX. A high-sensitivity high-resolution intravascular photoacoustic catheter through mode cleaning in a graded-index fiber. PHOTOACOUSTICS 2023; 29:100451. [PMID: 36654962 PMCID: PMC9841289 DOI: 10.1016/j.pacs.2023.100451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 06/17/2023]
Abstract
Intravascular photoacoustic imaging has been developed to evaluate the possibility of plaque rupture in atherosclerosis by high spatial resolution imaging of lipid. However, the detection sensitivity and spatial resolution are compromised by the poor focusing caused by a multimode fiber. In this work, we report an intravascular photoacoustic catheter with mode self-cleaning in a graded-index fiber to improve the beam quality and the sensitivity for lipid detection. Compared with the higher-order modes in a step-index multimode fiber, the lower-order modes generated by the self-cleaning effect in the graded-index fiber greatly enhanced the photoacoustic spatial resolution and detection sensitivity. The dominant ringing artifact caused by laser absorption of the ultrasound transducer was further reduced by using stripe suppression. A lipid plaque mimicking phantom was imaged for evaluation. Lipid particles with a small diameter of 75.7 µm were clearly observed.
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Affiliation(s)
- Yuhao Yuan
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Guangju Zhang
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Yuqi Chen
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
| | - Hongli Ni
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Mingsheng Li
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
| | - Michael Sturek
- CorVus Biomedical, LLC and CorVus Foundation, Inc, Crawfordsville, IN 47933, USA
| | - Ji-Xin Cheng
- Department of Electrical and Computer Engineering, Boston University, Boston, MA 02215, USA
- Department of Biomedical Engineering, Boston University, Boston, MA 02215, USA
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6
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Liang Y, Fu W, Li Q, Chen X, Sun H, Wang L, Jin L, Huang W, Guan BO. Optical-resolution functional gastrointestinal photoacoustic endoscopy based on optical heterodyne detection of ultrasound. Nat Commun 2022; 13:7604. [PMID: 36494360 PMCID: PMC9734171 DOI: 10.1038/s41467-022-35259-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022] Open
Abstract
Photoacoustic endoscopy shows promise in the detection of gastrointestinal cancer, inflammation, and other lesions. High-resolution endoscopic imaging of the hemodynamic response necessitates a small-sized, high-sensitivity ultrasound sensor. Here, we utilize a laser ultrasound sensor to develop a miniaturized, optical-resolution photoacoustic endoscope. The sensor can boost the acoustic response by a gain factor of ωo/Ω (the frequency ratio of the signal light and measured ultrasound) by measuring the acoustically induced optical phase change. As a result, we achieve a noise-equivalent pressure density (NEPD) below 1.5 mPa·Hz-1/2 over the measured range of 5 to 25 MHz. The heterodyne phase detection using dual-frequency laser beams of the sensor can offer resistance to thermal drift and vibrational perturbations. The endoscope is used to in vivo image a rat rectum and visualize the oxygen saturation changes during acute inflammation, which can hardly be observed with other imaging modalities.
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Affiliation(s)
- Yizhi Liang
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
| | - Wubing Fu
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
| | - Qiang Li
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
| | - Xiaolong Chen
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
| | - Huojiao Sun
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
| | - Lidai Wang
- grid.35030.350000 0004 1792 6846Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR China
| | - Long Jin
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
| | - Wei Huang
- grid.258164.c0000 0004 1790 3548Department of Gastroenterology, the First Affiliated Hospital, Jinan University, Guangzhou, Guangdong China
| | - Bai-Ou Guan
- grid.258164.c0000 0004 1790 3548Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, China
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Zhang Y, Taylor E, Huang N, Hamilton J, Cheng JX. Survival intravascular photoacoustic imaging of lipid-rich plaque in cholesterol fed rabbits. TRANSLATIONAL BIOPHOTONICS 2022; 4:e202200012. [PMID: 38283396 PMCID: PMC10812843 DOI: 10.1002/tbio.202200012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Accepted: 08/24/2022] [Indexed: 11/11/2022] Open
Abstract
Intravascular photoacoustic (IVPA) imaging is a promising modality for quantitative assessment of lipid-laden atherosclerotic plaques. Yet, survival IVPA imaging of the same plaque in the same animal is not demonstrated. Here, using a sheathed IVUS/PA catheter of 0.9 mm in diameter, we demonstrate MRI-guided survival IVPA imaging of same plaque in an aorta of a well-established rabbit model mimicking atherosclerosis in human patients. The IVUS/PA results were confirmed by histology. These advances open the opportunity to evaluate the effectiveness of a therapy that aims to reduce the size of atherosclerotic plaques and demonstrates the potential of translating the IVPA catheter into clinic for detection of lipid-rich plaques that are at high risk for thrombosis.
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Affiliation(s)
- Yi Zhang
- Department of Physics, Boston University, Boston, 02215, USA
| | - Erik Taylor
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, 02118, USA
| | - Nasi Huang
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, 02118, USA
| | - James Hamilton
- Department of Physiology and Biophysics, Boston University School of Medicine, Boston, 02118, USA
| | - Ji-Xin Cheng
- Department of Physics, Boston University, Boston, 02215, USA
- Department of Biomedical Engineering, Boston University, Boston, 02215, USA
- Department of Electrical and Computer Engineering, Boston University, Boston, 02215, USA
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Chen H, Agrawal S, Osman M, Minotto J, Mirg S, Liu J, Dangi A, Tran Q, Jackson T, Kothapalli SR. A Transparent Ultrasound Array for Real-Time Optical, Ultrasound, and Photoacoustic Imaging. BME FRONTIERS 2022; 2022:9871098. [PMID: 37850172 PMCID: PMC10521654 DOI: 10.34133/2022/9871098] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 04/28/2022] [Indexed: 10/19/2023] Open
Abstract
Objective and Impact Statement. Simultaneous imaging of ultrasound and optical contrasts can help map structural, functional, and molecular biomarkers inside living subjects with high spatial resolution. There is a need to develop a platform to facilitate this multimodal imaging capability to improve diagnostic sensitivity and specificity. Introduction. Currently, combining ultrasound, photoacoustic, and optical imaging modalities is challenging because conventional ultrasound transducer arrays are optically opaque. As a result, complex geometries are used to coalign both optical and ultrasound waves in the same field of view. Methods. One elegant solution is to make the ultrasound transducer transparent to light. Here, we demonstrate a novel transparent ultrasound transducer (TUT) linear array fabricated using a transparent lithium niobate piezoelectric material for real-time multimodal imaging. Results. The TUT-array consists of 64 elements and centered at ~6 MHz frequency. We demonstrate a quad-mode ultrasound, Doppler ultrasound, photoacoustic, and fluorescence imaging in real-time using the TUT-array directly coupled to the tissue mimicking phantoms. Conclusion. The TUT-array successfully showed a multimodal imaging capability and has potential applications in diagnosing cancer, neurological, and vascular diseases, including image-guided endoscopy and wearable imaging.
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Affiliation(s)
- Haoyang Chen
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Sumit Agrawal
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Mohamed Osman
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Josiah Minotto
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Shubham Mirg
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Jinyun Liu
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Ajay Dangi
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
| | - Quyen Tran
- School of Electrical Engineering and Computer Science, The Pennsylvania State University, University Park, PA 16802, USA
| | - Thomas Jackson
- School of Electrical Engineering and Computer Science, The Pennsylvania State University, University Park, PA 16802, USA
| | - Sri-Rajasekhar Kothapalli
- Department of Biomedical Engineering, The Pennsylvania State University, University Park, PA 16802, USA
- Penn State Cancer Institute, The Pennsylvania State University, Hershey, PA 17033, USA
- Graduate Program in Acoustics, The Pennsylvania State University, University Park, PA 16802, USA
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9
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Kim M, Lee KW, Kim K, Gulenko O, Lee C, Keum B, Chun HJ, Choi HS, Kim CU, Yang JM. Intra-instrument channel workable, optical-resolution photoacoustic and ultrasonic mini-probe system for gastrointestinal endoscopy. PHOTOACOUSTICS 2022; 26:100346. [PMID: 35313458 PMCID: PMC8933520 DOI: 10.1016/j.pacs.2022.100346] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Accepted: 03/08/2022] [Indexed: 05/04/2023]
Abstract
There has been a long-standing expectation that the optical-resolution embodiment of photoacoustic tomography could have a substantial impact on gastrointestinal endoscopy by enabling microscopic visualization of the vasculature based on the endogenous contrast mechanism. Although multiple studies have demonstrated the in vivo imaging capability of a developed imaging device over the last decade, the implementation of such an endoscopic system that can be applied immediately when necessary via the instrument channel of a video endoscope has been a challenge. In this study, we developed a 3.38-mm diameter catheter-based, integrated optical-resolution photoacoustic and ultrasonic mini-probe system and successfully demonstrated its intra-instrument channel workability for the standard 3.7-mm diameter instrument channel of a clinical video endoscope based on a swine model. Through the instrument channel, we acquired the first in vivo dual-mode photoacoustic and ultrasonic endoscopic images from the esophagogastric junction of a swine. Further, in a rat colorectum in vivo imaging experiment, we visualized hierarchically developed mesh-like capillary networks with a hole size as small as ~50 µm, which suggests the potential level of image details that could be photoacoustically provided in clinical settings in the future.
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Affiliation(s)
- Minjae Kim
- Center for Photoacoustic Medical Instruments, Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Kang Won Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, South Korea
| | - KiSik Kim
- Center for Photoacoustic Medical Instruments, Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Oleksandra Gulenko
- Center for Photoacoustic Medical Instruments, Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
| | - Cheol Lee
- Department of Physics, UNIST, Ulsan 44919, South Korea
| | - Bora Keum
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, South Korea
| | - Hoon Jai Chun
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, South Korea
| | - Hyuk Soon Choi
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, South Korea
| | - Chae Un Kim
- Department of Physics, UNIST, Ulsan 44919, South Korea
| | - Joon-Mo Yang
- Center for Photoacoustic Medical Instruments, Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, South Korea
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10
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Abstract
Photoacoustic (PA) imaging is able to provide extremely high molecular
contrast while maintaining the superior imaging depth of ultrasound (US)
imaging. Conventional microscopic PA imaging has limited access to deeper tissue
due to strong light scattering and attenuation. Endoscopic PA technology enables
direct delivery of excitation light into the interior of a hollow organ or
cavity of the body for functional and molecular PA imaging of target tissue.
Various endoscopic PA probes have been developed for different applications,
including the intravascular imaging of lipids in atherosclerotic plaque and
endoscopic imaging of colon cancer. In this paper, the authors review
representative probe configurations and corresponding preclinical applications.
In addition, the potential challenges and future directions of endoscopic PA
imaging are discussed.
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Affiliation(s)
- Yan Li
- Beckman Laser Institute, University of California Irvine,
Irvine, CA 92617, USA
| | - Gengxi Lu
- Roski Eye Institute, Keck School of Medicine, University of
Southern California, Los Angeles, CA 90033, USA
| | - Qifa Zhou
- Roski Eye Institute, Keck School of Medicine, University of
Southern California, Los Angeles, CA 90033, USA
| | - Zhongping Chen
- Beckman Laser Institute, University of California Irvine,
Irvine, CA 92617, USA
- The Edwards Lifesciences Center for Cardiovascular
Technology, University of California Irvine, Irvine, CA 92617, USA
- Department of Biomedical Engineering, University of
California Irvine, Irvine, CA 92697, USA
- Correspondence:
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11
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Li J, Shang C, Rong Y, Sun J, Cheng Y, He B, Wang Z, Li M, Ma J, Fu B, Ji X. Review on Laser Technology in Intravascular Imaging and Treatment. Aging Dis 2022; 13:246-266. [PMID: 35111372 PMCID: PMC8782552 DOI: 10.14336/ad.2021.0711] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 07/11/2021] [Indexed: 12/14/2022] Open
Abstract
Blood vessels are one of the most essential organs, which nourish all tissues in our body. Once there are intravascular plaques or vascular occlusion, other organs and circulatory systems will not work properly. Therefore, it is necessary to detect abnormal blood vessels by intravascular imaging technologies for subsequent vascular treatment. The emergence of lasers and fiber optics promotes the development of intravascular imaging and treatment. Laser imaging techniques can obtain deep vascular images owing to light scattering and absorption properties. Moreover, photothermal and photomechanical effects of laser make it possible to treat vascular diseases accurately. In this review, we present the research progress and applications of laser techniques in intravascular imaging and treatment. Firstly, we introduce intravascular optical coherent tomography and intravascular photoacoustic imaging, which can obtain various information of plaques. Multimodal intravascular imaging techniques provide more information about intravascular plaques, which have an essential influence on intravascular imaging. Secondly, two laser techniques including laser angioplasty and endovenous laser ablation are discussed for the treatment of arterial and venous diseases, respectively. Finally, the outlook of laser techniques in blood vessels, as well as the integration of laser imaging and treatment are prospected in the section of discussions.
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Affiliation(s)
- Jing Li
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
| | - Ce Shang
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
| | - Yao Rong
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
- Medical Engineering Devices of Xuanwu Hospital, Capital Medical University, Beijing, China.
| | - Jingxuan Sun
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
| | - Yuan Cheng
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
| | - Boqu He
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
| | - Zihao Wang
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
| | - Ming Li
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.
| | - Jianguo Ma
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
| | - Bo Fu
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing, China.
- Key Laboratory of Big Data-Based Precision Medicine Ministry of Industry and Information Technology, Interdisciplinary Innovation Institute of Medicine and Engineering, Beihang University, Beijing, China.
| | - Xunming Ji
- BUAA-CCMU Advanced Innovation Center for Big Data-Based Precision Medicine, School of Engineering Medicine, Beihang University, Beijing, China.
- China-America Institute of Neuroscience, Xuanwu Hospital, Capital Medical University, Beijing, China.
- Neurosurgery Department of Xuanwu Hospital, Capital Medical University, Beijing, China.
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12
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Sowers T, VanderLaan D, Karpiouk A, Onohara D, Schmarkey S, Rousselle S, Padala M, Emelianov S. In vivo safety study using radiation at wavelengths and dosages relevant to intravascular imaging. JOURNAL OF BIOMEDICAL OPTICS 2022; 27:JBO-210251R. [PMID: 35102728 PMCID: PMC8802906 DOI: 10.1117/1.jbo.27.1.016003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Accepted: 01/05/2022] [Indexed: 05/04/2023]
Abstract
SIGNIFICANCE Intravascular photoacoustic (IVPA) imaging can identify native lipid in atherosclerotic plaques in vivo. However, the large number of laser pulses required to produce 3D images is a safety concern that has not been fully addressed. AIM We aim to evaluate if irradiation at wavelengths and dosages relevant to IVPA imaging causes target vessel damage. APPROACH We irradiate the carotid artery of swine at one of several energy dosages using radiation at 1064 or 1720 nm and use histological evaluation by a pathologist to identify dose-dependent damage. RESULTS Media necrosis was the only dose-dependent form of injury. Damage was present at a cumulative fluence of 50 J / cm2 when using 1720 nm light. Damage was more equivocally identified at 700 J / cm2 using 1064 nm. CONCLUSIONS In prior work, IVPA imaging of native lipid in swine has been successfully conducted below the damage thresholds identified. This indicates that it will be possible to use IVPA imaging in a clinical setting without damaging vessel tissue. Future work should determine if irradiation causes an increase in blood thrombogenicity and confirm whether damaged tissue will heal over longer time points.
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Affiliation(s)
- Timothy Sowers
- Georgia Institute of Technology, Parker H. Petit Institute for Bioengineering and Bioscience, Atlanta, Georgia, United States
- Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering, Atlanta, Georgia, United States
| | - Don VanderLaan
- Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, Georgia, United States
| | - Andrei Karpiouk
- Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, Georgia, United States
| | - Daisuke Onohara
- Emory University Hospital Midtown, Structural Heart Research and Innovation Laboratory, Carlyle Fraser Heart Center, Atlanta, Georgia, United States
| | - Susan Schmarkey
- Emory University Hospital Midtown, Structural Heart Research and Innovation Laboratory, Carlyle Fraser Heart Center, Atlanta, Georgia, United States
| | | | - Muralidhar Padala
- Georgia Institute of Technology, Parker H. Petit Institute for Bioengineering and Bioscience, Atlanta, Georgia, United States
- Emory University Hospital Midtown, Structural Heart Research and Innovation Laboratory, Carlyle Fraser Heart Center, Atlanta, Georgia, United States
- Georgia Institute of Technology and Emory University School of Medicine, Wallace H. Coulter Department of Biomedical Engineering, Atlanta, Georgia, United States
- Emory University School of Medicine, Division of Cardiothoracic Surgery, Department of Surgery, Atlanta, Georgia, United States
| | - Stanislav Emelianov
- Georgia Institute of Technology, Parker H. Petit Institute for Bioengineering and Bioscience, Atlanta, Georgia, United States
- Georgia Institute of Technology, School of Electrical and Computer Engineering, Atlanta, Georgia, United States
- Georgia Institute of Technology and Emory University School of Medicine, Wallace H. Coulter Department of Biomedical Engineering, Atlanta, Georgia, United States
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13
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Wu M, Awasthi N, Rad NM, Pluim JPW, Lopata RGP. Advanced Ultrasound and Photoacoustic Imaging in Cardiology. SENSORS (BASEL, SWITZERLAND) 2021; 21:7947. [PMID: 34883951 PMCID: PMC8659598 DOI: 10.3390/s21237947] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/23/2021] [Accepted: 11/26/2021] [Indexed: 12/26/2022]
Abstract
Cardiovascular diseases (CVDs) remain the leading cause of death worldwide. An effective management and treatment of CVDs highly relies on accurate diagnosis of the disease. As the most common imaging technique for clinical diagnosis of the CVDs, US imaging has been intensively explored. Especially with the introduction of deep learning (DL) techniques, US imaging has advanced tremendously in recent years. Photoacoustic imaging (PAI) is one of the most promising new imaging methods in addition to the existing clinical imaging methods. It can characterize different tissue compositions based on optical absorption contrast and thus can assess the functionality of the tissue. This paper reviews some major technological developments in both US (combined with deep learning techniques) and PA imaging in the application of diagnosis of CVDs.
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Affiliation(s)
- Min Wu
- Photoacoustics and Ultrasound Laboratory Eindhoven (PULS/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands; (N.M.R.); (R.G.P.L.)
| | - Navchetan Awasthi
- Photoacoustics and Ultrasound Laboratory Eindhoven (PULS/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands; (N.M.R.); (R.G.P.L.)
- Medical Image Analysis Group (IMAG/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands;
| | - Nastaran Mohammadian Rad
- Photoacoustics and Ultrasound Laboratory Eindhoven (PULS/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands; (N.M.R.); (R.G.P.L.)
- Medical Image Analysis Group (IMAG/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands;
| | - Josien P. W. Pluim
- Medical Image Analysis Group (IMAG/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands;
| | - Richard G. P. Lopata
- Photoacoustics and Ultrasound Laboratory Eindhoven (PULS/e), Department of Biomedical Engineering, Eindhoven University of Technology, 5612 AZ Eindhoven, The Netherlands; (N.M.R.); (R.G.P.L.)
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14
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Lin L, Xie Z, Xu M, Wang Y, Li S, Yang N, Gong X, Liang P, Zhang X, Song L, Cao F. IVUS\IVPA hybrid intravascular molecular imaging of angiogenesis in atherosclerotic plaques via RGDfk peptide-targeted nanoprobes. PHOTOACOUSTICS 2021; 22:100262. [PMID: 33868920 PMCID: PMC8040266 DOI: 10.1016/j.pacs.2021.100262] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 02/17/2021] [Accepted: 03/11/2021] [Indexed: 05/03/2023]
Abstract
Current intravascular imaging modalities face hurdles in the molecular evaluation of progressed plaques. This study aims to construct a novel hybrid imaging system (intravascular ultrasound/intravascular photoacoustic, IVPA/IVUS) via RGDfk peptide-targeted nanoparticles for monitoring angiogenesis in progressed atherosclerotic plaques in a rabbit model. An atherosclerotic rabbit model was induced by abdominal aorta balloon de-endothelialization followed by a high-fat diet. A human serum albumin (HSA)-based nanoprobe modified with RGDfk peptide was constructed by encapsulating indocyanine green (ICG) via electrostatic force (ICG-HSA-RGDfk NPs, IHR-NPs). A hybrid intravascular imaging system that combined IVUS and IVPA was self-assembled for RGDfk visualization within atherosclerotic plaques in the rabbit abdominal aorta. Through IHR-NPs and the hybrid IVUS/IVPA imaging platform, multiple comprehensive pieces of information on progressed plaques, including anatomical information, composition information and molecular information, can be obtained simultaneously, which may improve the precise diagnosis of plaque characteristics and the evaluation of early interventions for atherosclerosis.
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Affiliation(s)
- Lejian Lin
- Department of Cardiology, National Research Center for Geriatric Diseases & Second Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
- Department of Cardiology, The Eighth Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
| | - Zhihua Xie
- Research Lab for Biomedical Optics and Molecular Imaging, Shenzhen Key Lab for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Mengqi Xu
- Department of Cardiology, National Research Center for Geriatric Diseases & Second Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Yabin Wang
- Department of Cardiology, National Research Center for Geriatric Diseases & Second Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Sulei Li
- Department of Cardiology, National Research Center for Geriatric Diseases & Second Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Ning Yang
- Department of Cardiology, National Research Center for Geriatric Diseases & Second Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
| | - Xiaojing Gong
- Research Lab for Biomedical Optics and Molecular Imaging, Shenzhen Key Lab for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Ping Liang
- The First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
| | - Xu Zhang
- The First Medical Centre, Chinese PLA General Hospital, Beijing, 100853, China
| | - Liang Song
- Research Lab for Biomedical Optics and Molecular Imaging, Shenzhen Key Lab for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Feng Cao
- Department of Cardiology, National Research Center for Geriatric Diseases & Second Medical Center of Chinese PLA General Hospital, Beijing, 100853, China
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