1
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Ortner VK, Sahu A, Cordova M, Kose K, Aleissa S, Alessi-Fox C, Haedersdal M, Rajadhyaksha M, Rossi AM. Exploring the utility of Deep Red Anthraquinone 5 for digital staining of ex vivo confocal micrographs of optically sectioned skin. J Biophotonics 2021; 14:e202000207. [PMID: 33314673 PMCID: PMC8274380 DOI: 10.1002/jbio.202000207] [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] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 12/10/2020] [Accepted: 12/11/2020] [Indexed: 05/11/2023]
Abstract
We investigated the utility of the fluorescent dye Deep Red Anthraquinone 5 (DRAQ5) for digital staining of optically sectioned skin in comparison to acridine orange (AO). Eight fresh-frozen thawed Mohs discard tissue specimens were stained with AO and DRAQ5, and imaged using an ex vivo confocal microscope at three wavelengths (488 nm and 638 nm for fluorescence, 785 nm for reflectance). Images were overlaid (AO + Reflectance, DRAQ5 + Reflectance), digitally stained, and evaluated by three investigators for perceived image quality (PIQ) and histopathological feature identification. In addition to nuclear staining, AO seemed to stain dermal fibers in a subset of cases in digitally stained images, while DRAQ5 staining was more specific to nuclei. Blinded evaluation showed substantial agreement, favoring DRAQ5 for PIQ (82%, Cl 75%-90%, Gwet's AC 0.74) and for visualization of histopathological features in (81%, Cl 73%-89%, Gwet's AC 0.67), supporting its use in digital staining of multimodal confocal micrographs of skin.
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Affiliation(s)
- Vinzent Kevin Ortner
- Department of Dermatology, Copenhagen University Hospital, Bispebjerg and Frederiskberg, Denmark
| | - Aditi Sahu
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Miguel Cordova
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Kivanc Kose
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Saud Aleissa
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | - Merete Haedersdal
- Department of Dermatology, Copenhagen University Hospital, Bispebjerg and Frederiskberg, Denmark
| | - Milind Rajadhyaksha
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Anthony Mario Rossi
- Dermatology Service, Memorial Sloan Kettering Cancer Center, New York, NY, USA
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2
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Zhong Q, Li A, Jin R, Zhang D, Li X, Jia X, Ding Z, Luo P, Zhou C, Jiang C, Feng Z, Zhang Z, Gong H, Yuan J, Luo Q. High-definition imaging using line-illumination modulation microscopy. Nat Methods 2021; 18:309-315. [PMID: 33649587 DOI: 10.1038/s41592-021-01074-x] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 01/20/2021] [Indexed: 11/09/2022]
Abstract
The microscopic visualization of large-scale three-dimensional (3D) samples by optical microscopy requires overcoming challenges in imaging quality and speed and in big data acquisition and management. We report a line-illumination modulation (LiMo) technique for imaging thick tissues with high throughput and low background. Combining LiMo with thin tissue sectioning, we further develop a high-definition fluorescent micro-optical sectioning tomography (HD-fMOST) method that features an average signal-to-noise ratio of 110, leading to substantial improvement in neuronal morphology reconstruction. We achieve a >30-fold lossless data compression at a voxel resolution of 0.32 × 0.32 × 1.00 μm3, enabling online data storage to a USB drive or in the cloud, and high-precision (95% accuracy) brain-wide 3D cell counting in real time. These results highlight the potential of HD-fMOST to facilitate large-scale acquisition and analysis of whole-brain high-resolution datasets.
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Affiliation(s)
- Qiuyuan Zhong
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China.,HUST-Suzhou Institute for Brainsmatics, Suzhou, China
| | - Anan Li
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China.,HUST-Suzhou Institute for Brainsmatics, Suzhou, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Science, Shanghai, China
| | - Rui Jin
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Dejie Zhang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangning Li
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China.,HUST-Suzhou Institute for Brainsmatics, Suzhou, China
| | - Xueyan Jia
- HUST-Suzhou Institute for Brainsmatics, Suzhou, China
| | - Zhangheng Ding
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China.,HUST-Suzhou Institute for Brainsmatics, Suzhou, China
| | - Pan Luo
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Can Zhou
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Chenyu Jiang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Zhao Feng
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Zhihong Zhang
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China
| | - Hui Gong
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China.,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China.,HUST-Suzhou Institute for Brainsmatics, Suzhou, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Science, Shanghai, China
| | - Jing Yuan
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China. .,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China. .,HUST-Suzhou Institute for Brainsmatics, Suzhou, China.
| | - Qingming Luo
- Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, China. .,MoE Key Laboratory for Biomedical Photonics, School of Engineering Sciences, Huazhong University of Science and Technology, Wuhan, China. .,HUST-Suzhou Institute for Brainsmatics, Suzhou, China. .,School of Biomedical Engineering, Hainan University, Haikou, China.
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3
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Liu JTC, Glaser AK, Bera K, True LD, Reder NP, Eliceiri KW, Madabhushi A. Harnessing non-destructive 3D pathology. Nat Biomed Eng 2021; 5:203-218. [PMID: 33589781 PMCID: PMC8118147 DOI: 10.1038/s41551-020-00681-x] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 12/17/2020] [Indexed: 02/08/2023]
Abstract
High-throughput methods for slide-free three-dimensional (3D) pathological analyses of whole biopsies and surgical specimens offer the promise of modernizing traditional histology workflows and delivering improvements in diagnostic performance. Advanced optical methods now enable the interrogation of orders of magnitude more tissue than previously possible, where volumetric imaging allows for enhanced quantitative analyses of cell distributions and tissue structures that are prognostic and predictive. Non-destructive imaging processes can simplify laboratory workflows, potentially reducing costs, and can ensure that samples are available for subsequent molecular assays. However, the large size of the feature-rich datasets that they generate poses challenges for data management and computer-aided analysis. In this Perspective, we provide an overview of the imaging technologies that enable 3D pathology, and the computational tools-machine learning, in particular-for image processing and interpretation. We also discuss the integration of various other diagnostic modalities with 3D pathology, along with the challenges and opportunities for clinical adoption and regulatory approval.
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Affiliation(s)
- Jonathan T C Liu
- Department of Mechanical Engineering, University of Washington, Seattle, WA, USA.
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA.
- Department of Bioengineering, University of Washington, Seattle, WA, USA.
| | - Adam K Glaser
- Department of Mechanical Engineering, University of Washington, Seattle, WA, USA
| | - Kaustav Bera
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Lawrence D True
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Nicholas P Reder
- Department of Mechanical Engineering, University of Washington, Seattle, WA, USA
- Department of Laboratory Medicine and Pathology, University of Washington, Seattle, WA, USA
| | - Kevin W Eliceiri
- Department of Medical Physics, University of Wisconsin, Madison, WI, USA.
- Department of Biomedical Engineering, University of Wisconsin, Madison, WI, USA.
- Morgridge Institute for Research, Madison, WI, USA.
| | - Anant Madabhushi
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA.
- Louis Stokes Cleveland Veterans Administration Medical Center, Cleveland, OH, USA.
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4
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Zhong Q, Jiang C, Zhang D, Chen S, Jin R, Gong H, Yuan J. High-throughput optical sectioning via line-scanning imaging with digital structured modulation. Opt Lett 2021; 46:504-507. [PMID: 33528395 DOI: 10.1364/ol.412323] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 12/10/2020] [Indexed: 06/12/2023]
Abstract
Optical sectioning with high-throughput, a high signal-to-noise ratio (SNR), and submicrometer resolution is crucial, but challenging, to three-dimensional visualization of large biological tissue samples. Here we propose line-scanning imaging with digital structured modulation for optical sectioning. Our method generates images with a significantly improved SNR, compared to wide-field structured illumination microscopy (WF-SIM), without residual modulation artifacts. We image a 14.5mm×11.5mm horizontal view of mouse brain tissue at a pixel resolution of 0.32µm×0.32µm in 101 s, which, compared to WF-SIM, represents a significant improvement on imaging throughput. These results provide development opportunities for high-throughput, high-resolution large-area optical imaging methods.
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5
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Rey-Barroso L, Peña-Gutiérrez S, Yáñez C, Burgos-Fernández FJ, Vilaseca M, Royo S. Optical Technologies for the Improvement of Skin Cancer Diagnosis: A Review. Sensors (Basel) 2021; 21:E252. [PMID: 33401739 DOI: 10.3390/s21010252] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/24/2020] [Accepted: 12/26/2020] [Indexed: 02/04/2023]
Abstract
The worldwide incidence of skin cancer has risen rapidly in the last decades, becoming one in three cancers nowadays. Currently, a person has a 4% chance of developing melanoma, the most aggressive form of skin cancer, which causes the greatest number of deaths. In the context of increasing incidence and mortality, skin cancer bears a heavy health and economic burden. Nevertheless, the 5-year survival rate for people with skin cancer significantly improves if the disease is detected and treated early. Accordingly, large research efforts have been devoted to achieve early detection and better understanding of the disease, with the aim of reversing the progressive trend of rising incidence and mortality, especially regarding melanoma. This paper reviews a variety of the optical modalities that have been used in the last years in order to improve non-invasive diagnosis of skin cancer, including confocal microscopy, multispectral imaging, three-dimensional topography, optical coherence tomography, polarimetry, self-mixing interferometry, and machine learning algorithms. The basics of each of these technologies together with the most relevant achievements obtained are described, as well as some of the obstacles still to be resolved and milestones to be met.
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6
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van Huizen LMG, Radonic T, van Mourik F, Seinstra D, Dickhoff C, Daniels JMA, Bahce I, Annema JT, Groot ML. Compact portable multiphoton microscopy reveals histopathological hallmarks of unprocessed lung tumor tissue in real time. Transl Biophotonics 2020; 2:e202000009. [PMID: 34341777 PMCID: PMC8311669 DOI: 10.1002/tbio.202000009] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/18/2020] [Accepted: 07/06/2020] [Indexed: 12/11/2022] Open
Abstract
During lung cancer operations a rapid and reliable assessment of tumor tissue can reduce operation time and potentially improve patient outcomes. We show that third harmonic generation (THG), second harmonic generation (SHG) and two-photon excited autofluorescence (2PEF) microscopy reveals relevant, histopathological information within seconds in fresh unprocessed human lung samples. We used a compact, portable microscope and recorded images within 1 to 3 seconds using a power of 5 mW. The generated THG/SHG/2PEF images of tumorous and nontumorous tissues are compared with the corresponding standard histology images, to identify alveolar structures and histopathological hallmarks. Cellular structures (tumor cells, macrophages and lymphocytes) (THG), collagen (SHG) and elastin (2PEF) are differentiated and allowed for rapid identification of carcinoid with solid growth pattern, minimally enlarged monomorphic cell nuclei with salt-and-pepper chromatin pattern, and adenocarcinoma with lipidic and micropapillary growth patterns. THG/SHG/2PEF imaging is thus a promising tool for clinical intraoperative assessment of lung tumor tissue.
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Affiliation(s)
- Laura M. G. van Huizen
- Faculty of Science, Department of Physics, LaserLabVrije Universiteit AmsterdamAmsterdamNetherlands
| | - Teodora Radonic
- Department of PathologyAmsterdam Universities Medical Center/VU University Medical CenterAmsterdamNetherlands
| | | | - Danielle Seinstra
- Department of PathologyAmsterdam Universities Medical Center/VU University Medical CenterAmsterdamNetherlands
| | - Chris Dickhoff
- Department of SurgeryAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Johannes M. A. Daniels
- Department of Pulmonary DiseasesAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Idris Bahce
- Department of Pulmonary DiseasesAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Jouke T. Annema
- Department of Pulmonary DiseasesAmsterdam Universities Medical CenterAmsterdamNetherlands
| | - Marie Louise Groot
- Faculty of Science, Department of Physics, LaserLabVrije Universiteit AmsterdamAmsterdamNetherlands
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7
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Fast A, Lal A, Durkin AF, Lentsch G, Harris RM, Zachary CB, Ganesan AK, Balu M. Fast, large area multiphoton exoscope (FLAME) for macroscopic imaging with microscopic resolution of human skin. Sci Rep 2020; 10:18093. [PMID: 33093610 PMCID: PMC7582965 DOI: 10.1038/s41598-020-75172-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
We introduce a compact, fast large area multiphoton exoscope (FLAME) system with enhanced molecular contrast for macroscopic imaging of human skin with microscopic resolution. A versatile imaging platform, FLAME combines optical and mechanical scanning mechanisms with deep learning image restoration to produce depth-resolved images that encompass sub-mm2 to cm2 scale areas of tissue within minutes and provide means for a comprehensive analysis of live or resected thick human skin tissue. The FLAME imaging platform, which expands on a design recently introduced by our group, also features time-resolved single photon counting detection to uniquely allow fast discrimination and 3D virtual staining of melanin. We demonstrate its performance and utility by fast ex vivo and in vivo imaging of human skin. With the ability to provide rapid access to depth resolved images of skin over cm2 area and to generate 3D distribution maps of key sub-cellular skin components such as melanocytic dendrites and melanin, FLAME is ready to be translated into a clinical imaging tool for enhancing diagnosis accuracy, guiding therapy and understanding skin biology.
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Affiliation(s)
- Alexander Fast
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Rd., Irvine, CA, 92612, USA
| | - Akarsh Lal
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Rd., Irvine, CA, 92612, USA
| | - Amanda F Durkin
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Rd., Irvine, CA, 92612, USA
| | - Griffin Lentsch
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Rd., Irvine, CA, 92612, USA
| | - Ronald M Harris
- Department of Dermatology, University of California, Irvine, 1 Medical Plaza Dr., Irvine, CA, 92697, USA
| | - Christopher B Zachary
- Department of Dermatology, University of California, Irvine, 1 Medical Plaza Dr., Irvine, CA, 92697, USA
| | - Anand K Ganesan
- Department of Dermatology, University of California, Irvine, 1 Medical Plaza Dr., Irvine, CA, 92697, USA
| | - Mihaela Balu
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Rd., Irvine, CA, 92612, USA.
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8
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van der Graaff L, van Leenders GJLH, Boyaval F, Stallinga S. Computational imaging modalities for multi-focal whole-slide imaging systems. Appl Opt 2020; 59:5967-5982. [PMID: 32672740 DOI: 10.1364/ao.394290] [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] [Received: 04/08/2020] [Accepted: 06/08/2020] [Indexed: 06/11/2023]
Abstract
Whole-slide imaging systems can generate full-color image data of tissue slides efficiently, which are needed for digital pathology applications. This paper focuses on a scanner architecture that is based on a multi-line image sensor that is tilted with respect to the optical axis, such that every line of the sensor scans the tissue slide at a different focus level. This scanner platform is designed for imaging with continuous autofocus and inherent color registration at a throughput of the order of 400 MPx/s. Here, single-scan multi-focal whole-slide imaging, enabled by this platform, is explored. In particular, two computational imaging modalities based on multi-focal image data are studied. First, 3D imaging of thick absorption stained slides (∼60µm) is demonstrated in combination with deconvolution to ameliorate the inherently weak contrast in thick-tissue imaging. Second, quantitative phase tomography is demonstrated on unstained tissue slides and on fluorescently stained slides, revealing morphological features complementary to features made visible with conventional absorption or fluorescence stains. For both computational approaches simplified algorithms are proposed, targeted for straightforward parallel processing implementation at ∼GPx/s throughputs.
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9
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Navarrete-Dechent C, Marghoob AA, Chen CSJ. The road to real-time, bedside, optical imaging pathology: basal cell carcinoma and beyond. Br J Dermatol 2020; 182:257-259. [PMID: 32017020 DOI: 10.1111/bjd.18471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- C Navarrete-Dechent
- Department of Dermatology, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile.,Dermatology Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, U.S.A
| | - A A Marghoob
- Dermatology Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, U.S.A
| | - C-S J Chen
- Dermatology Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, U.S.A
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10
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Yin C, Wei L, Kose K, Glaser AK, Peterson G, Rajadhyaksha M, Liu JT. Real-time video mosaicking to guide handheld in vivo microscopy. J Biophotonics 2020; 13:e202000048. [PMID: 32246558 PMCID: PMC7969124 DOI: 10.1002/jbio.202000048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/16/2020] [Accepted: 03/24/2020] [Indexed: 05/05/2023]
Abstract
Handheld and endoscopic optical-sectioning microscopes are being developed for noninvasive screening and intraoperative consultation. Imaging a large extent of tissue is often desired, but miniature in vivo microscopes tend to suffer from limited fields of view. To extend the imaging field during clinical use, we have developed a real-time video mosaicking method, which allows users to efficiently survey larger areas of tissue. Here, we modified a previous post-processing mosaicking method so that real-time mosaicking is possible at >30 frames/second when using a device that outputs images that are 400 × 400 pixels in size. Unlike other real-time mosaicking methods, our strategy can accommodate image rotations and deformations that often occur during clinical use of a handheld microscope. We perform a feasibility study to demonstrate that the use of real-time mosaicking is necessary to enable efficient sampling of a desired imaging field when using a handheld dual-axis confocal microscope.
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Affiliation(s)
- Chengbo Yin
- University of Washington, Department of Mechanical Engineering, Seattle, WA, 98195, USA
| | - Linpeng Wei
- University of Washington, Department of Mechanical Engineering, Seattle, WA, 98195, USA
| | - Kivanc Kose
- Memorial Sloan-Kettering Cancer Center, Dermatology Service, New York, NY, 10021, USA
| | - Adam K. Glaser
- University of Washington, Department of Mechanical Engineering, Seattle, WA, 98195, USA
| | - Gary Peterson
- Memorial Sloan-Kettering Cancer Center, Dermatology Service, New York, NY, 10021, USA
| | - Milind Rajadhyaksha
- Memorial Sloan-Kettering Cancer Center, Dermatology Service, New York, NY, 10021, USA
| | - Jonathan T.C. Liu
- University of Washington, Department of Mechanical Engineering, Seattle, WA, 98195, USA
- University of Washington School of Medicine, Department of Pathology, Seattle, WA 98195, USA
- University of Washington, Department of Bioengineering, Seattle, WA 98195, USA
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11
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Liu C, Zhao Z, Jin C, Xiao Y, Gao G, Xie H, Dai Q, Yin H, Kong L. High-speed, multi-modal, label-free imaging of pathological slices with a Bessel beam. Biomed Opt Express 2020; 11:2694-2704. [PMID: 32499953 PMCID: PMC7249815 DOI: 10.1364/boe.391143] [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] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
Optical imaging of stained pathological slices has become the gold standard for disease diagnosis. However, the procedure of sample preparation is complex and time-consuming. Multiphoton microscopy (MPM) is promising for label-free imaging, but the imaging speed is limited, especially for whole slice imaging. Here we propose a high-speed, multi-modal, label-free MPM by Bessel scan-based strip mosaicking. With a Bessel beam for excitation, the extended depth-of-focus not only enables full axial information acquisition at once, but also alleviates the demanding requirement of sample alignment. With the strip mosaicking protocol, we can save the time of frequent sample transferring. Besides, we add a closely-attached reflection mirror under the sample for enhancing epi-detection signals, and employ circularly polarized beams for recording comprehensive information. We demonstrate its application in multi-modal, label-free imaging of human gastric cancer slices and liver cancer slices, and show its potential in rapid disease diagnosis.
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Affiliation(s)
- Chi Liu
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
- equal contribution
| | - Zhifeng Zhao
- Department of Automation, Tsinghua University, Beijing 100084, China
- equal contribution
| | - Cheng Jin
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
| | - Ying Xiao
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Guoqiang Gao
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Hao Xie
- Department of Automation, Tsinghua University, Beijing 100084, China
| | - Qionghai Dai
- Department of Automation, Tsinghua University, Beijing 100084, China
| | - Hongfang Yin
- Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
| | - Lingjie Kong
- State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing 100084, China
- IDG/McGovern Institute for Brain Research, Tsinghua University, Beijing 100084, China
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12
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van der Graaff L, van Leenders GJLH, Boyaval F, Stallinga S. Multi-line fluorescence scanning microscope for multi-focal imaging with unlimited field of view. Biomed Opt Express 2019; 10:6313-6339. [PMID: 31853402 PMCID: PMC6913394 DOI: 10.1364/boe.10.006313] [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] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 11/07/2019] [Accepted: 11/09/2019] [Indexed: 05/12/2023]
Abstract
Confocal scanning microscopy is the de facto standard modality for fluorescence imaging. Point scanning, however, leads to a limited throughput and makes the technique unsuitable for fast multi-focal scanning over large areas. We propose an architecture for multi-focal fluorescence imaging that is scalable to large area imaging. The design is based on the concept of line scanning with continuous 'push broom' scanning. Instead of a line sensor, we use an area sensor that is tilted with respect to the optical axis to acquire image data from multiple depths inside the sample simultaneously. A multi-line illumination where the lines span a plane conjugate to the tilted sensor is created by means of a diffractive optics design, implemented on a spatial light modulator. In particular, we describe a design that uses higher order astigmatism to generate focal lines of substantially constant peak intensity along the lines. The proposed method is suitable for fast 3D image acquisition with unlimited field of view, it requires no moving components except for the sample scanning stage, and provides intrinsic alignment of the simultaneously scanned focal slices. As proof of concept, we have scanned 9 focal slices simultaneously over an area of 36 mm2 at 0.29 µm pixel size in object space. The projected ultimate throughput that can be realized with the proposed architecture is in excess of 100 Mpixel/s.
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Affiliation(s)
- Leon van der Graaff
- Department of Imaging Physics, Delft University of Technology, The Netherlands
| | | | - Fanny Boyaval
- Department of Pathology, Leiden University Medical Center, The Netherlands
| | - Sjoerd Stallinga
- Department of Imaging Physics, Delft University of Technology, The Netherlands
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13
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Chen Y, Xie W, Glaser AK, Reder NP, Mao C, Dintzis SM, Vaughan JC, Liu JTC. Rapid pathology of lumpectomy margins with open-top light-sheet (OTLS) microscopy. Biomed Opt Express 2019; 10:1257-1272. [PMID: 30891344 PMCID: PMC6420271 DOI: 10.1364/boe.10.001257] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 01/11/2019] [Accepted: 01/25/2019] [Indexed: 05/18/2023]
Abstract
Open-top light-sheet microscopy is a technique that can potentially enable rapid ex vivo inspection of large tissue surfaces and volumes. Here, we have optimized an open-top light-sheet (OTLS) microscope and image-processing workflow for the comprehensive examination of surgical margin surfaces, and have also developed a novel fluorescent analog of H&E staining that is robust for staining fresh unfixed tissues. Our tissue-staining method can be achieved within 2.5 minutes followed by OTLS microscopy of lumpectomy surfaces at a rate of up to 1.5 cm2/minute. An image atlas is presented to show that OTLS image quality surpasses that of intraoperative frozen sectioning and can approximate that of gold-standard H&E histology of formalin-fixed paraffin-embedded (FFPE) tissues. Qualitative evidence indicates that these intraoperative methods do not interfere with downstream post-operative H&E histology and immunohistochemistry. These results should facilitate the translation of OTLS microscopy for intraoperative guidance of lumpectomy and other surgical oncology procedures.
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Affiliation(s)
- Ye Chen
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA
- These authors contributed equally
| | - Weisi Xie
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA
- These authors contributed equally
| | - Adam K. Glaser
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA
| | - Nicholas P. Reder
- Department of Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Chenyi Mao
- Department of Chemistry, University of Washington Seattle, WA 98195, USA
| | - Suzanne M. Dintzis
- Department of Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Joshua C. Vaughan
- Department of Chemistry, University of Washington Seattle, WA 98195, USA
- Department of Physiology and Biophysics, University of Washington, Seattle, WA 98195, USA
| | - Jonathan T. C. Liu
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA
- Department of Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
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14
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Kang J, Song I, Kim H, Kim H, Lee S, Choi Y, Chang HJ, Sohn DK, Yoo H. Rapid tissue histology using multichannel confocal fluorescence microscopy with focus tracking. Quant Imaging Med Surg 2018; 8:884-893. [PMID: 30505717 PMCID: PMC6218212 DOI: 10.21037/qims.2018.09.18] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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: 08/22/2018] [Accepted: 09/20/2018] [Indexed: 12/25/2022]
Abstract
BACKGROUND Simplified hematoxylin and eosin (H&E) staining followed by cryo-sectioning enables rapid identification of cancerous tissue within the procedure room during Mohs micrographic surgery. Yet, a faster evaluation method is desirable as the staining protocol requires physically sectioning of the tissue after freezing, which leads to prolonged sectioning time along with the frozen artifacts that may occur in frozen sectioning. METHODS We present a multichannel confocal microscopy system to rapidly evaluate cancerous tissue. Using the optical sectioning capability of the confocal microscope, optically sectioned images of the freshly excised mouse tissue were acquired and converted into images resembling H&E histology. To show details of the nuclei and structure of the tissue, we applied a newly developed rapid tissue staining method using Hoechst 33342 and Eosin-Y. Line scanning and stitching was performed to overcome the limited field of view of the confocal microscope. Unlike previous confocal systems requiring an additional mechanical device to tilt the sample and match the focus of the objective lens, we developed a focus tracking method to rapidly scan large sample area. The focus tracking provides an effective means of keeping the image of the thick tissue in focus without additional devices. We then evaluated the performance of the confocal microscope to obtain optically sectioned images in thick tissue by comparing fluorescence stained slide images. We also obtained the corresponding H&E histology image to assess the potential of the system as a diagnostic tool. RESULTS We successfully imaged freshly excised mouse organs including stomach, tumor, and heart within a few minutes using the developed multichannel confocal microscopy and the tissue staining method. Using the pseudocolor method, colors of the acquired confocal grayscale images are converted to furthermore resemble Hematoxylin and Eosin histology. Due to the focus tracking and the line scanning, optically sectioned images were obtained over the large field of view. Comparisons with H&E histology have shown that the confocal images can acquire large details such as the ventricle as well as small details such as muscle fibers and nuclei. CONCLUSIONS This study confirms the use of confocal fluorescence microscopy technique to acquire rapid pathology results using optical sectioning, line scanning and focus tracking. We anticipate that the presented method will enable intraoperative histology and significantly reduce stress on patients undergoing surgery requiring repeated histology examinations.
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Affiliation(s)
- Juehyung Kang
- Department of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea
| | - Incheon Song
- Nanoscope Systems Inc., Daejeon, Republic of Korea
| | - Hongrae Kim
- Department of Biomedical Engineering, National Cancer Center, Goyang, Republic of Korea
| | - Hyunjin Kim
- Biomarker Branch, National Cancer Center, Goyang, Republic of Korea
| | - Sunhye Lee
- Department of Biomedical Engineering, National Cancer Center, Goyang, Republic of Korea
| | - Yongdoo Choi
- Biomarker Branch, National Cancer Center, Goyang, Republic of Korea
| | - Hee Jin Chang
- Center of Colorectal Cancer, National Cancer Center, Goyang, Republic of Korea
| | - Dae Kyung Sohn
- Department of Biomedical Engineering, National Cancer Center, Goyang, Republic of Korea
- Center of Colorectal Cancer, National Cancer Center, Goyang, Republic of Korea
| | - Hongki Yoo
- Department of Biomedical Engineering, Hanyang University, Seoul, Republic of Korea
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15
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Zhang B, Sun M, Yang Y, Chen L, Zou X, Yang T, Hua Y, Ji M. Rapid, large-scale stimulated Raman histology with strip mosaicing and dual-phase detection. Biomed Opt Express 2018; 9:2604-2613. [PMID: 30258676 PMCID: PMC6154204 DOI: 10.1364/boe.9.002604] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 05/07/2018] [Accepted: 05/08/2018] [Indexed: 05/21/2023]
Abstract
Two-color stimulated Raman scattering (SRS) microscopy with label-free mapping of lipid/protein distributions has shown promise in virtual histology. Despite previous demonstrations of SRS in tumor delineation and diagnosis, the speed and efficiency of the current technique requires further improvements for practical use. Here, we integrate parallel dual-phase SRS detection with strip mosaicing, which reduces the imaging time of a whole mouse brain section from 70 to 8 minutes. We further verified our method in imaging fresh human surgical tissues, showing its great potential for rapid SRS histology, especially for large scale, large quantity imaging tasks.
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Affiliation(s)
- Bohan Zhang
- State Key Laboratory of Surface Physics and Department of Physics, Collaborative Innovation Center of Genetics and Development, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai 200433, China
| | - Mengxiong Sun
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Yifan Yang
- State Key Laboratory of Surface Physics and Department of Physics, Collaborative Innovation Center of Genetics and Development, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai 200433, China
| | - Lingchao Chen
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Xiang Zou
- Department of Neurosurgery, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Tian Yang
- Department of Hepatobiliary Surgery, the Eastern Hepatobiliary Surgery Hospital, the Second Military Medical University, Shanghai 200433, China
| | - Yingqi Hua
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, China
| | - Minbiao Ji
- State Key Laboratory of Surface Physics and Department of Physics, Collaborative Innovation Center of Genetics and Development, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai 200433, China
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16
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Longo C, Borsari S, Pampena R, Benati E, Bombonato C, Raucci M, Mirra M, Di Stefani A, Peris K, Pellacani G. Basal cell carcinoma: the utility of in vivo
and ex vivo
confocal microscopy. J Eur Acad Dermatol Venereol 2018; 32:2090-2096. [DOI: 10.1111/jdv.14984] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 02/23/2018] [Indexed: 11/29/2022]
Affiliation(s)
- C. Longo
- Dermatology Unit; University of Modena and Reggio Emilia; Modena Italy
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | - S. Borsari
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | - R. Pampena
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | - E. Benati
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | - C. Bombonato
- Dermatology Unit; University of Modena and Reggio Emilia; Modena Italy
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | - M. Raucci
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | - M. Mirra
- Centro Oncologico ad Alta Teconologia Diagnostica; Azienda Unità Sanitaria Locale; IRCCS Reggio Emilia Italy
| | | | - K. Peris
- Dermatology Unit; Catholic University; Rome Italy
| | - G. Pellacani
- Dermatology Unit; University of Modena and Reggio Emilia; Modena Italy
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17
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Boppart SA, Brown JQ, Farah CS, Kho E, Marcu L, Saunders CM, Sterenborg HJCM. Label-free optical imaging technologies for rapid translation and use during intraoperative surgical and tumor margin assessment. J Biomed Opt 2017; 23:1-10. [PMID: 29288572 PMCID: PMC5747261 DOI: 10.1117/1.jbo.23.2.021104] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 11/28/2017] [Indexed: 05/18/2023]
Abstract
The biannual International Conference on Biophotonics was recently held on April 30 to May 1, 2017, in Fremantle, Western Australia. This continuing conference series brought together key opinion leaders in biophotonics to present their latest results and, importantly, to participate in discussions on the future of the field and what opportunities exist when we collectively work together for using biophotonics for biological discovery and medical applications. One session in this conference, entitled "Tumor Margin Identification: Critiquing Technologies," challenged invited speakers and attendees to review and critique representative label-free optical imaging technologies and their application for intraoperative assessment and guidance in surgical oncology. We are pleased to share a summary in this outlook paper, with the intent to motivate more research inquiry and investigations, to challenge these and other optical imaging modalities to evaluate and improve performance, to spur translation and adoption, and ultimately, to improve the care and outcomes of patients.
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Affiliation(s)
- Stephen A. Boppart
- University of Illinois at Urbana-Champaign, Beckman Institute for Advanced Science and Technology, Urbana, Illinois, United States
- Address all correspondence to: Stephen A. Boppart, E-mail:
| | - J. Quincy Brown
- Tulane University, Department of Biomedical Engineering, New Orleans, Louisiana, United States
| | - Camile S. Farah
- University of Western Australia, UWA Dental School, Oral Health Centre of Western Australia, Discipline of Oral Oncology, Nedlands, Western Australia, Australia
| | - Esther Kho
- Netherlands Cancer Institute, Department of Surgery, Amsterdam, The Netherlands
| | - Laura Marcu
- University of California–Davis, Department of Biomedical Engineering, Comprehensive Cancer Center, Davis, California, United States
| | - Christobel M. Saunders
- The University of Western Australia, Department of Surgical Oncology, Crawley, Western Australia, Australia
| | - Henricus J. C. M. Sterenborg
- Netherlands Cancer Institute, Department of Surgery, Amsterdam, The Netherlands
- Academic Medical Center, Department of Biomedical Engineering and Physics, Amsterdam, The Netherlands
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18
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Kose K, Gou M, Yélamos O, Cordova M, Rossi AM, Nehal KS, Flores ES, Camps O, Dy JG, Brooks DH, Rajadhyaksha M. Automated video-mosaicking approach for confocal microscopic imaging in vivo: an approach to address challenges in imaging living tissue and extend field of view. Sci Rep 2017; 7:10759. [PMID: 28883434 DOI: 10.1038/s41598-017-11072-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 08/11/2017] [Indexed: 12/12/2022] Open
Abstract
We describe a computer vision-based mosaicking method for in vivo videos of reflectance confocal microscopy (RCM). RCM is a microscopic imaging technique, which enables the users to rapidly examine tissue in vivo. Providing resolution at cellular-level morphology, RCM imaging combined with mosaicking has shown to be highly sensitive and specific for non-invasively guiding skin cancer diagnosis. However, current RCM mosaicking techniques with existing microscopes have been limited to two-dimensional sequences of individual still images, acquired in a highly controlled manner, and along a specific predefined raster path, covering a limited area. The recent advent of smaller handheld microscopes is enabling acquisition of videos, acquired in a relatively uncontrolled manner and along an ad-hoc arbitrarily free-form, non-rastered path. Mosaicking of video-images (video-mosaicking) is necessary to display large areas of tissue. Our video-mosaicking methods addresses this need. The method can handle unique challenges encountered during video capture such as motion blur artifacts due to rapid motion of the microscope over the imaged area, warping in frames due to changes in contact angle and varying resolution with depth. We present test examples of video-mosaics of melanoma and non-melanoma skin cancers, to demonstrate potential clinical utility.
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19
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Longo C, Ragazzi M, Rajadhyaksha M, Nehal K, Bennassar A, Pellacani G, Malvehy Guilera J. In Vivo and Ex Vivo Confocal Microscopy for Dermatologic and Mohs Surgeons. Dermatol Clin 2016; 34:497-504. [PMID: 27692455 DOI: 10.1016/j.det.2016.05.012] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Confocal microscopy is a modern imaging device that has been extensively applied in skin oncology. More specifically, for tumor margin assessment, it has been used in two modalities: reflectance mode (in vivo on skin patient) and fluorescence mode (on freshly excised specimen). Although in vivo reflectance confocal microscopy is an add-on tool for lentigo maligna mapping, fluorescence confocal microscopy is far superior for basal cell carcinoma and squamous cell carcinoma margin assessment in the Mohs setting. This article provides a comprehensive overview of the use of confocal microscopy for skin cancer margin evaluation.
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20
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Abeytunge S, Larson B, Peterson G, Morrow M, Rajadhyaksha M, Murray MP. Evaluation of breast tissue with confocal strip-mosaicking microscopy: a test approach emulating pathology-like examination. J Biomed Opt 2017; 22:34002. [PMID: 28327961 PMCID: PMC5361391 DOI: 10.1117/1.jbo.22.3.034002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 02/27/2017] [Indexed: 05/23/2023]
Abstract
Confocal microscopy is an emerging technology for rapid imaging of freshly excised tissue without the need for frozen- or fixed-section processing. Initial studies have described imaging of breast tissue using fluorescence confocal microscopy with small regions of interest, typically 750 × 750 ?? ? m 2 . We present exploration with a microscope, termed confocal strip-mosaicking microscope (CSM microscope), which images an area of 2 × 2 ?? cm 2 of tissue with cellular-level resolution in 10 min of excision. Using the CSM microscope, we imaged 34 fresh, human, large breast tissue specimens from 18 patients, blindly analyzed by a board-certified pathologist and subsequently correlated with the corresponding standard fixed histopathology. Invasive tumors and benign tissue were clearly identified in CSM strip-mosaic images. Thirty specimens were concordant for image-to-histopathology correlation while four were discordant.
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Affiliation(s)
- Sanjee Abeytunge
- Memorial Sloan Kettering Cancer Center, Dermatology Service, New York, New York, United States
| | - Bjorg Larson
- Memorial Sloan Kettering Cancer Center, Dermatology Service, New York, New York, United States
- Drew University, Physics Department, Madison, New Jersey, United States
| | - Gary Peterson
- Memorial Sloan Kettering Cancer Center, Dermatology Service, New York, New York, United States
| | - Monica Morrow
- Memorial Sloan Kettering Cancer Center, Breast Service, New York, New York, United States
| | - Milind Rajadhyaksha
- Memorial Sloan Kettering Cancer Center, Dermatology Service, New York, New York, United States
| | - Melissa P. Murray
- Memorial Sloan Kettering Cancer Center, Breast Pathology, New York, New York, United States
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21
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22
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Wang M, Tulman DB, Sholl AB, Kimbrell HZ, Mandava SH, Elfer KN, Luethy S, Maddox MM, Lai W, Lee BR, Brown JQ. Gigapixel surface imaging of radical prostatectomy specimens for comprehensive detection of cancer-positive surgical margins using structured illumination microscopy. Sci Rep 2016; 6:27419. [PMID: 27257084 PMCID: PMC4891779 DOI: 10.1038/srep27419] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Accepted: 05/18/2016] [Indexed: 01/07/2023] Open
Abstract
Achieving cancer-free surgical margins in oncologic surgery is critical to reduce the need for additional adjuvant treatments and minimize tumor recurrence; however, there is a delicate balance between completeness of tumor removal and preservation of adjacent tissues critical for normal post-operative function. We sought to establish the feasibility of video-rate structured illumination microscopy (VR-SIM) of the intact removed tumor surface as a practical and non-destructive alternative to intra-operative frozen section pathology, using prostate cancer as an initial target. We present the first images of the intact human prostate surface obtained with pathologically-relevant contrast and subcellular detail, obtained in 24 radical prostatectomy specimens immediately after excision. We demonstrate that it is feasible to routinely image the full prostate circumference, generating gigapixel panorama images of the surface that are readily interpreted by pathologists. VR-SIM confirmed detection of positive surgical margins in 3 out of 4 prostates with pathology-confirmed adenocarcinoma at the circumferential surgical margin, and furthermore detected extensive residual cancer at the circumferential margin in a case post-operatively classified by histopathology as having negative surgical margins. Our results suggest that the increased surface coverage of VR-SIM could also provide added value for detection and characterization of positive surgical margins over traditional histopathology.
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Affiliation(s)
- Mei Wang
- Department of Biomedical Engineering, Tulane University, New Orleans, LA 70118, USA
| | - David B Tulman
- Bioinnovation Program, Tulane University, New Orleans, LA 70118, USA
| | - Andrew B Sholl
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Hillary Z Kimbrell
- Department of Pathology and Laboratory Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Sree H Mandava
- Department of Urology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Katherine N Elfer
- Department of Biomedical Engineering, Tulane University, New Orleans, LA 70118, USA
| | - Samuel Luethy
- Department of Biomedical Engineering, Tulane University, New Orleans, LA 70118, USA
| | - Michael M Maddox
- Department of Urology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Weil Lai
- Department of Urology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Benjamin R Lee
- Department of Urology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - J Quincy Brown
- Department of Biomedical Engineering, Tulane University, New Orleans, LA 70118, USA
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23
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Abstract
First developed in 1957, confocal microscopy is a powerful imaging tool that can be used to obtain near real-time reflected light images of untreated human tissue with nearly histologic resolution. Besides its research applications, in the last decades, confocal microscopy technology has been proposed as a useful device to improve clinical diagnosis, especially in ophthalmology, dermatology, and endomicroscopy settings, thanks to advances in instrument development. Compared with the wider use of the in vivo tissue assessment, ex vivo applications of confocal microscopy are not fully explored. A comprehensive review of the current literature was performed here, focusing on the reliable applications of ex vivo confocal microscopy in surgical pathology and on some potential evolutions of this new technique from pathologists' viewpoint.
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24
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Yang T, Zheng T, Shang Z, Wang X, Lv X, Yuan J, Zeng S. Rapid imaging of large tissues using high-resolution stage-scanning microscopy. Biomed Opt Express 2015; 6:1867-75. [PMID: 26137386 PMCID: PMC4467712 DOI: 10.1364/boe.6.001867] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 04/17/2015] [Accepted: 04/17/2015] [Indexed: 05/22/2023]
Abstract
Rapid and high-resolution imaging of large tissues is essential in biological research, like brain neuron connectivity research and cancer margins imaging. Here a novel stage-scanning confocal microscopy was developed for rapid imaging of large tissues. Line scanning methods and strip imaging strategy were used to increase the imaging speed. The scientific CMOS was used as line detector in sub-array mode and the optical sectioning ability can be easily adjusted by changing the number of line detectors according to different samples. Fluorescent beads imaging showed resolutions of 0.47 μm, 0.56 μm, and 1.56 μm in the X, Y, and Z directions, respectively, with a 40 × objective lens. A 10 × 10 mm(2) coronal plane with enough signal intensity could be imaged in about 88 sec at a sampling resolution of 0.16 μm/pixel. Rapid imaging of mouse brain slices demonstrated the applicability of this system in visualizing neuronal details at high frame rate.
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Affiliation(s)
- Tao Yang
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
| | - Ting Zheng
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
| | - Zhenhua Shang
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
| | - Xiaojun Wang
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
| | - Xiaohua Lv
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
| | - Jing Yuan
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
| | - Shaoqun Zeng
- Britton Chance Center for Biomedical Photonics, Huazhong University of Science and Technology-Wuhan National Laboratory for Optoelectronics, Wuhan 430074,
China
- MoE Key Laboratory for Biomedical Photonics, Department of Biomedical Engineering, Huazhong University of Science and Technology, Wuhan 430074,
China
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25
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Harris MA, Van AN, Malik BH, Jabbour JM, Maitland KC. A pulse coupled neural network segmentation algorithm for reflectance confocal images of epithelial tissue. PLoS One 2015; 10:e0122368. [PMID: 25816131 DOI: 10.1371/journal.pone.0122368] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 02/13/2015] [Indexed: 12/16/2022] Open
Abstract
Automatic segmentation of nuclei in reflectance confocal microscopy images is critical for visualization and rapid quantification of nuclear-to-cytoplasmic ratio, a useful indicator of epithelial precancer. Reflectance confocal microscopy can provide three-dimensional imaging of epithelial tissue in vivo with sub-cellular resolution. Changes in nuclear density or nuclear-to-cytoplasmic ratio as a function of depth obtained from confocal images can be used to determine the presence or stage of epithelial cancers. However, low nuclear to background contrast, low resolution at greater imaging depths, and significant variation in reflectance signal of nuclei complicate segmentation required for quantification of nuclear-to-cytoplasmic ratio. Here, we present an automated segmentation method to segment nuclei in reflectance confocal images using a pulse coupled neural network algorithm, specifically a spiking cortical model, and an artificial neural network classifier. The segmentation algorithm was applied to an image model of nuclei with varying nuclear to background contrast. Greater than 90% of simulated nuclei were detected for contrast of 2.0 or greater. Confocal images of porcine and human oral mucosa were used to evaluate application to epithelial tissue. Segmentation accuracy was assessed using manual segmentation of nuclei as the gold standard.
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Sinha L, Wang Y, Yang C, Khan A, Brankov JG, Liu JT, Tichauer KM. Quantification of the binding potential of cell-surface receptors in fresh excised specimens via dual-probe modeling of SERS nanoparticles. Sci Rep 2015; 5:8582. [PMID: 25716578 DOI: 10.1038/srep08582] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 01/26/2015] [Indexed: 12/12/2022] Open
Abstract
The complete removal of cancerous tissue is a central aim of surgical oncology, but is difficult to achieve in certain cases, especially when the removal of surrounding normal tissues must be minimized. Therefore, when post-operative pathology identifies residual tumor at the surgical margins, re-excision surgeries are often necessary. An intraoperative approach for tumor-margin assessment, insensitive to nonspecific sources of molecular probe accumulation and contrast, is presented employing kinetic-modeling analysis of dual-probe staining using surface-enhanced Raman scattering nanoparticles (SERS NPs). Human glioma (U251) and epidermoid (A431) tumors were implanted subcutaneously in six athymic mice. Fresh resected tissues were stained with an equimolar mixture of epidermal growth factor receptor (EGFR)-targeted and untargeted SERS NPs. The binding potential (BP; proportional to receptor concentration) of EGFR – a cell-surface receptor associated with cancer – was estimated from kinetic modeling of targeted and untargeted NP concentrations in response to serial rinsing. EGFR BPs in healthy, U251, and A431 tissues were 0.06 ± 0.14, 1.13 ± 0.40, and 2.23 ± 0.86, respectively, which agree with flow-cytometry measurements and published reports. The ability of this approach to quantify the BP of cell-surface biomarkers in fresh tissues opens up an accurate new approach to analyze tumor margins intraoperatively.
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Longo C, Rajadhyaksha M, Ragazzi M, Nehal K, Gardini S, Moscarella E, Lallas A, Zalaudek I, Piana S, Argenziano G, Pellacani G. Evaluating
ex vivo
fluorescence confocal microscopy images of basal cell carcinomas in
M
ohs excised tissue. Br J Dermatol 2014; 171:561-70. [DOI: 10.1111/bjd.13070] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/17/2014] [Indexed: 11/27/2022]
Affiliation(s)
- C. Longo
- Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - M. Rajadhyaksha
- Dermatology Service Memorial Sloan Kettering Cancer Center 160 E 53rd St New York NY 10022 U.S.A
| | - M. Ragazzi
- Department of Pathology Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - K. Nehal
- Dermatology Service Memorial Sloan Kettering Cancer Center 160 E 53rd St New York NY 10022 U.S.A
| | - S. Gardini
- Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - E. Moscarella
- Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - A. Lallas
- Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - I. Zalaudek
- Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
- Department of Dermatology University of Graz Graz Austria
| | - S. Piana
- Department of Pathology Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - G. Argenziano
- Dermatology and Skin Cancer Unit Arcispedale Santa Maria Nuova (Istituto di Ricovero e Cura a Carattere Scientifico – IRCCS) Viale Risorgimento, 80 42100 Reggio Emilia Italy
| | - G. Pellacani
- Department of Dermatology University of Modena and Reggio Emilia Modena Italy
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Liebig KN, Maslehaty H, Petridis AK, Konen W, Scholz M. Comparison of two algorithms for the application of real-time image mosaicking in neuroendoscopy. J Neurosurg 2014; 121:688-99. [PMID: 24995784 DOI: 10.3171/2014.5.jns121788] [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] [Indexed: 11/06/2022]
Abstract
OBJECT Neuroendoscopy is used more and more frequently in neurosurgical procedures and has become an important tool in the neurosurgical armamentarium. However, the main restriction of neuroendoscopy is the limited field of view. A better overview of the area of interest would increase surgical safety and decrease procedure-related morbidity rates. In the present study, the authors aimed to improve this restriction by using and comparing two algorithms to create endoscopic panoramic images, which increase the field of view during neuroendoscopic procedures. METHODS Different endoscopic methods with or without a stand and with linear or circular endoscope movements were performed in cadaveric ventricles. Video of the endoscopy was used to create image mosaics of the lateral ventricle with the help of the Kourogi or LogSearch (LS) algorithm. In the LS algorithm, different template sizes were used. Three observers graded the quality of the image mosaic in terms of usefulness in surgery. The fastest frame rate was 3-4 frames/second. RESULTS The LS algorithm with a larger template size showed significantly better results for the creation of image mosaics than the Kourogi algorithm in linear endoscopic movement with or without a stand. In circular endoscopic movements, the results seemed to be better with the LS algorithm but were not significantly different from those obtained with the Kourogi algorithm. In summary, image quality in the experimental paradigms was satisfying. CONCLUSIONS Results in the study showed that the creation of image mosaics is possible and reliable with the featured algorithms. Image mosaicking is an applicable device for neuroendoscopy and can increase the field of view during endoscopic procedures. Its use can increase the safety and the field of application of neuroendoscopy. However, faster frame rates will be required to create a smooth image for practical use during surgery.
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Affiliation(s)
- Kay Niklas Liebig
- Department of Neurosurgery, Klinikum Duisburg, SANA Kliniken, Academic Teaching Hospital of University Essen-Duisburg; and
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Larson B, Abeytunge S, Seltzer E, Rajadhyaksha M, Nehal K. Detection of skin cancer margins in Mohs excisions with high-speed strip mosaicing confocal microscopy: a feasibility study. Br J Dermatol 2014; 169:922-6. [PMID: 23701464 DOI: 10.1111/bjd.12444] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/14/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND Fluorescence confocal mosaicing microscopy is an emerging technology for rapid imaging of nuclear and morphological detail directly in excised tissue, without the need for frozen or fixed section processing. Basal cell carcinomas (BCCs) can be detected with high sensitivity and specificity in Mohs excisions with this approach. For translation to clinical trials and towards potentially routine implementation, a new and faster approach called strip mosaicing confocal microscopy was recently developed. OBJECTIVES To perform a preliminary assessment of fluorescence strip mosaicing confocal microscopy for detecting skin cancer margins in Mohs excisions. METHODS Tissue samples from 17 Mohs cases were imaged in the form of strip mosaics. Each mosaic was divided into two halves (submosaics) and graded by a Mohs surgeon and a dermatologist who were blinded to the pathology. The 34 submosaics were compared with the corresponding Mohs pathology. RESULTS The overall image quality was excellent for resolution, contrast and stitching in the 34 submosaics. Components of normal skin including the epidermis, dermis, dermal appendages and subcutaneous tissue were easily visualized. The preliminary measures of sensitivity and specificity were both 94% for detecting skin cancer margins. CONCLUSIONS The new strip mosaicing approach represents another advance in confocal microscopy for imaging of large areas of excised tissue. Strip mosaicing may enable rapid assessment of BCC margins in fresh excisions during Mohs surgery and may serve as an adjunct to frozen pathology.
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Affiliation(s)
- B Larson
- Dermatology Service, Memorial Sloan Kettering Cancer Center, 160 E 53rd St, New York, NY, 10022, U.S.A
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Bennàssar A, Vilata A, Puig S, Malvehy J. Ex vivo
fluorescence confocal microscopy for fast evaluation of tumour margins during Mohs surgery. Br J Dermatol 2014; 170:360-5. [DOI: 10.1111/bjd.12671] [Citation(s) in RCA: 90] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2013] [Indexed: 11/28/2022]
Affiliation(s)
- A. Bennàssar
- Melanoma Unit Dermatology Department Hospital Clínic & IDIBAPS (Institut d'Investigacions Biomèdiques Agustí Pi i Sunyer) Villarroel 170 08036 Barcelona Spain
| | - A. Vilata
- Melanoma Unit Dermatology Department Hospital Clínic & IDIBAPS (Institut d'Investigacions Biomèdiques Agustí Pi i Sunyer) Villarroel 170 08036 Barcelona Spain
| | - S. Puig
- Melanoma Unit Dermatology Department Hospital Clínic & IDIBAPS (Institut d'Investigacions Biomèdiques Agustí Pi i Sunyer) Villarroel 170 08036 Barcelona Spain
- Investigación Biomédica en Red en Enfermedades Raras (CIBERER) Barcelona Spain
| | - J. Malvehy
- Melanoma Unit Dermatology Department Hospital Clínic & IDIBAPS (Institut d'Investigacions Biomèdiques Agustí Pi i Sunyer) Villarroel 170 08036 Barcelona Spain
- Investigación Biomédica en Red en Enfermedades Raras (CIBERER) Barcelona Spain
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Ahsen OO, Tao YK, Potsaid BM, Sheikine Y, Jiang J, Grulkowski I, Tsai TH, Jayaraman V, Kraus MF, Connolly JL, Hornegger J, Cable A, Fujimoto JG. Swept source optical coherence microscopy using a 1310 nm VCSEL light source. Opt Express 2013; 21:18021-33. [PMID: 23938673 PMCID: PMC3756222 DOI: 10.1364/oe.21.018021] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2013] [Revised: 07/08/2013] [Accepted: 07/12/2013] [Indexed: 05/18/2023]
Abstract
We demonstrate high speed, swept source optical coherence microscopy (OCM) using a MEMS tunable vertical cavity surface-emitting laser (VCSEL) light source. The light source had a sweep rate of 280 kHz, providing a bidirectional axial scan rate of 560 kHz. The sweep bandwidth was 117 nm centered at 1310 nm, corresponding to an axial resolution of 13.1 µm in air, corresponding to 8.1 µm (9.6 µm spectrally shaped) in tissue. Dispersion mismatch from different objectives was compensated numerically, enabling magnification and field of view to be easily changed. OCM images were acquired with transverse resolutions between 0.86 µm - 3.42 µm using interchangeable 40X, 20X and 10X objectives with ~600 µm x 600 µm, ~1 mm x 1 mm and ~2 mm x 2 mm field-of-view (FOV), respectively. Parasitic variations in path length with beam scanning were corrected numerically. These features enable swept source OCM to be integrated with a wide range of existing scanning microscopes. Large FOV mosaics were generated by serially acquiring adjacent overlapping microscopic fields and combining them in post-processing. Fresh human colon, thyroid and kidney specimens were imaged ex vivo and compared to matching histology sections, demonstrating the ability of OCM to image tissue specimens.
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Affiliation(s)
- Osman O Ahsen
- Department of Electrical Engineering & Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA, USA
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Abeytunge S, Li Y, Larson B, Peterson G, Seltzer E, Toledo-Crow R, Rajadhyaksha M. Confocal microscopy with strip mosaicing for rapid imaging over large areas of excised tissue. J Biomed Opt 2013; 18:61227. [PMID: 23389736 PMCID: PMC3565124 DOI: 10.1117/1.jbo.18.6.061227] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 12/19/2012] [Accepted: 12/21/2012] [Indexed: 05/20/2023]
Abstract
Confocal mosaicing microscopy is a developing technology platform for imaging tumor margins directly in freshly excised tissue, without the processing required for conventional pathology. Previously, mosaicing on 12-×-12 mm² of excised skin tissue from Mohs surgery and detection of basal cell carcinoma margins was demonstrated in 9 min. Last year, we reported the feasibility of a faster approach called "strip mosaicing," which was demonstrated on a 10-×-10 mm² of tissue in 3 min. Here we describe further advances in instrumentation, software, and speed. A mechanism was also developed to flatten tissue in order to enable consistent and repeatable acquisition of images over large areas. We demonstrate mosaicing on 10-×-10 mm² of skin tissue with 1-μm lateral resolution in 90 s. A 2.5-×-3.5 cm² piece of breast tissue was scanned with 0.8-μm lateral resolution in 13 min. Rapid mosaicing of confocal images on large areas of fresh tissue potentially offers a means to perform pathology at the bedside. Imaging of tumor margins with strip mosaicing confocal microscopy may serve as an adjunct to conventional (frozen or fixed) pathology for guiding surgery.
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Affiliation(s)
- Sanjee Abeytunge
- Memorial Sloan-Kettering Cancer Center, Research Engineering Laboratory, New York, New York 10065, USA.
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Jabbour JM, Cheng S, Malik BH, Cuenca R, Jo JA, Wright J, Cheng YSL, Maitland KC. Fluorescence lifetime imaging and reflectance confocal microscopy for multiscale imaging of oral precancer. J Biomed Opt 2013; 18:046012. [PMID: 23595826 PMCID: PMC3628018 DOI: 10.1117/1.jbo.18.4.046012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 03/19/2013] [Accepted: 03/22/2013] [Indexed: 05/19/2023]
Abstract
Optical imaging techniques using a variety of contrast mechanisms are under evaluation for early detection of epithelial precancer; however, tradeoffs in field of view (FOV) and resolution may limit their application. Therefore, we present a multiscale multimodal optical imaging system combining macroscopic biochemical imaging of fluorescence lifetime imaging (FLIM) with subcellular morphologic imaging of reflectance confocal microscopy (RCM). The FLIM module images a 16×16 mm² tissue area with 62.5 μm lateral and 320 ps temporal resolution to guide cellular imaging of suspicious regions. Subsequently, coregistered RCM images are acquired at 7 Hz with 400 μm diameter FOV, <1 μm lateral and 3.5 μm axial resolution. FLIM-RCM imaging was performed on a tissue phantom, normal porcine buccal mucosa, and a hamster cheek pouch model of oral carcinogenesis. While FLIM is sensitive to biochemical and macroscopic architectural changes in tissue, RCM provides images of cell nuclear morphology, all key indicators of precancer progression.
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Affiliation(s)
- Joey M. Jabbour
- Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843
| | - Shuna Cheng
- Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843
| | - Bilal H. Malik
- Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843
| | - Rodrigo Cuenca
- Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843
| | - Javier A. Jo
- Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843
| | - John Wright
- Texas A&M University Health Science Center—Baylor College of Dentistry, Department of Diagnostic Sciences, 3302 Gaston Avenue, Dallas, Texas 75246
| | - Yi-Shing Lisa Cheng
- Texas A&M University Health Science Center—Baylor College of Dentistry, Department of Diagnostic Sciences, 3302 Gaston Avenue, Dallas, Texas 75246
| | - Kristen C. Maitland
- Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Building, 3120 TAMU, College Station, Texas 77843
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Longo C, Ragazzi M, Castagnetti F, Gardini S, Palmieri T, Lallas A, Moscarella E, Piana S, Pellacani G, Zalaudek I, Argenziano G. Inserting ex vivo Fluorescence Confocal Microscopy Perioperatively in Mohs Micrographic Surgery Expedites Bedside Assessment of Excision Margins in Recurrent Basal Cell Carcinoma. Dermatology 2013; 227:89-92. [DOI: 10.1159/000353577] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Accepted: 06/06/2013] [Indexed: 11/19/2022] Open
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Abstract
Stimulated Raman scattering (SRS) microscopy has opened up a wide range of biochemical imaging applications by probing a particular Raman-active molecule vibrational mode in the specimen. However, the original implementation with picosecond pulse excitation can only realize rapid chemical mapping with a single Raman band. Here we present a novel SRS microscopic technique using a grating-based pulse shaper for excitation and a grating-based spectrograph for detection to achieve simultaneous multicolor SRS imaging with high sensitivity and high acquisition speeds. In particular, we used linear combination of the measured CH2 and CH3 stretching signals to map the distributions of protein and lipid contents simultaneously.
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Affiliation(s)
- Fa-Ke Lu
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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Gareau DS, Jeon H, Nehal KS, Rajadhyaksha M. Rapid screening of cancer margins in tissue with multimodal confocal microscopy. J Surg Res 2012; 178:533-8. [PMID: 22721570 DOI: 10.1016/j.jss.2012.05.059] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 05/16/2012] [Accepted: 05/17/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Complete and accurate excision of cancer is guided by the examination of histopathology. However, preparation of histopathology is labor intensive and slow, leading to insufficient sampling of tissue and incomplete and/or inaccurate excision of margins. We demonstrate the potential utility of multimodal confocal mosaicing microscopy for rapid screening of cancer margins, directly in fresh surgical excisions, without the need for conventional embedding, sectioning, or processing. MATERIALS AND METHODS A multimodal confocal mosaicing microscope was developed to image basal cell carcinoma margins in surgical skin excisions, with the resolution that shows nuclear detail. Multimodal contrast is with fluorescence for imaging nuclei and reflectance for cellular cytoplasm and dermal collagen. Thirty-five excisions of basal cell carcinomas from Mohs surgery were imaged, and the mosaics analyzed by comparison with the corresponding frozen pathology. RESULTS Confocal mosaics are produced in about 9 min, displaying tissue in fields of view of 12 mm with ×2 magnification. A digital staining algorithm transforms black and white contrast to purple and pink, which simulates the appearance of standard histopathology. Mosaicing enables rapid digital screening, which mimics the examination of histopathology. CONCLUSIONS Multimodal confocal mosaicing microscopy offers a technology platform to potentially enable real-time pathology at the bedside. The imaging may serve as an adjunct to conventional histopathology to expedite screening of margins and guide surgery toward more complete and accurate excision of cancer.
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Affiliation(s)
- Daniel S Gareau
- Dermatology Service, Memorial Sloan-Kettering Cancer Center, 160 East 53rd Street, New York 10022, New York, USA.
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Gareau D, Bar A, Snaveley N, Lee K, Chen N, Swanson N, Simpson E, Jacques S. Tri-modal confocal mosaics detect residual invasive squamous cell carcinoma in Mohs surgical excisions. J Biomed Opt 2012; 17:066018. [PMID: 22734774 PMCID: PMC3381035 DOI: 10.1117/1.jbo.17.6.066018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Revised: 04/27/2012] [Accepted: 05/01/2012] [Indexed: 05/23/2023]
Abstract
For rapid, intra-operative pathological margin assessment to guide staged cancer excisions, multimodal confocal mosaic scan image wide surgical margins (approximately 1 cm) with sub-cellular resolution and mimic the appearance of conventional hematoxylin and eosin histopathology (H&E). The goal of this work is to combine three confocal imaging modes: acridine orange fluorescence (AO) for labeling nuclei, eosin fluorescence (Eo) for labeling cytoplasm, and endogenous reflectance (R) for marking collagen and keratin. Absorption contrast is achieved by alternating the excitation wavelength: 488 nm (AO fluorescence) and 532 nm (Eo fluorescence). Superposition and false-coloring of these modes mimics H&E, enabling detection of cutaneous squamous cell carcinomas (SCC). The sum of mosaic Eo+R is false-colored pink to mimic the appearance of eosin, while the AO mosaic is false-colored purple to mimic the appearance of hematoxylin in H&E. In this study, mosaics of 10 Mohs surgical excisions containing invasive SCC, and five containing only normal tissue were subdivided for digital presentation equivalent to 4 × histology. Of the total 50 SCC and 25 normal sub-mosaics presented, two reviewers made two and three type-2 errors (false positives), respectively. Limitations to precisely mimic H&E included occasional elastin staining by AO. These results suggest that confocal mosaics may effectively guide staged SCC excisions in skin and other tissues.
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Affiliation(s)
- Dan Gareau
- Oregon Health & Science University, Department of Dermatology, CH16D, 3303 SW Bond Avenue, Portland, Oregon 97239, USA.
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Saldua MA, Olsovsky CA, Callaway ES, Chapkin RS, Maitland KC. Imaging inflammation in mouse colon using a rapid stage-scanning confocal fluorescence microscope. J Biomed Opt 2012; 17:016006. [PMID: 22352656 PMCID: PMC3380810 DOI: 10.1117/1.jbo.17.1.016006] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Received: 08/15/2011] [Revised: 11/10/2011] [Accepted: 11/14/2011] [Indexed: 05/22/2023]
Abstract
Large area confocal microscopy may provide fast, high-resolution image acquisition for evaluation of tissue in pre-clinical studies with reduced tissue processing in comparison to histology. We present a rapid beam and stage-scanning confocal fluorescence microscope to image cellular and tissue features along the length of the entire excised mouse colon. The beam is scanned at 8,333 lines/sec by a polygon scanning mirror while the specimen is scanned in the orthogonal axis by a motorized translation stage with a maximum speed of 7 mm/sec. A single 1 × 60 mm(2) field of view image spanning the length of the mouse colon is acquired in 10 s. Z-projection images generated from axial image stacks allow high resolution imaging of the surface of non-flat specimens. In contrast to the uniform size, shape, and distribution of colon crypts in confocal images of normal colon, confocal images of chronic bowel inflammation exhibit heterogeneous tissue structure with localized severe crypt distortion.
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Affiliation(s)
- Meagan A. Saldua
- Texas A&M University, Department of Biomedical Engineering, 3120 TAMU, College Station, Texas, 77843-3120
| | - Cory A. Olsovsky
- Texas A&M University, Department of Biomedical Engineering, 3120 TAMU, College Station, Texas, 77843-3120
| | - Evelyn S. Callaway
- Texas A&M University, Program in Integrative Nutrition & Complex Diseases, 2253 TAMU, College Station, Texas 77843-2253
| | - Robert S. Chapkin
- Texas A&M University, Program in Integrative Nutrition & Complex Diseases, 2253 TAMU, College Station, Texas 77843-2253
| | - Kristen C. Maitland
- Texas A&M University, Department of Biomedical Engineering, 3120 TAMU, College Station, Texas, 77843-3120
- Address all correspondence to: Kristen C. Maitland, Texas A&M University, Department of Biomedical Engineering, 5045 Emerging Technologies Bldg, 3120 TAMU, College Station, Texas 77843. Fax: (979) 845–4450; E-mail:
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