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Cha J, Broch A, Mudge S, Kim K, Namgoong JM, Oh E, Kim P. Real-time, label-free, intraoperative visualization of peripheral nerves and micro-vasculatures using multimodal optical imaging techniques. BIOMEDICAL OPTICS EXPRESS 2018; 9. [PMID: 29541506 PMCID: PMC5846516 DOI: 10.1364/boe.9.001097] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Accurate, real-time identification and display of critical anatomic structures, such as the nerve and vasculature structures, are critical for reducing complications and improving surgical outcomes. Human vision is frequently limited in clearly distinguishing and contrasting these structures. We present a novel imaging system, which enables noninvasive visualization of critical anatomic structures during surgical dissection. Peripheral nerves are visualized by a snapshot polarimetry that calculates the anisotropic optical properties. Vascular structures, both venous and arterial, are identified and monitored in real-time using a near-infrared laser-speckle-contrast imaging. We evaluate the system by performing in vivo animal studies with qualitative comparison by contrast-agent-aided fluorescence imaging.
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Affiliation(s)
- Jaepyeong Cha
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
- These authors contributed equally to this work
| | - Aline Broch
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
- These authors contributed equally to this work
| | - Scott Mudge
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
| | - Kihoon Kim
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
- Department of Surgery, Inje University Haeundae Paik Hospital, 875 Haeun-daero, Haeundae-gu, Busan 612-896, South Korea
| | - Jung-Man Namgoong
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
- Department of Surgery, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, South Korea
| | - Eugene Oh
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
- Department of Biomedical Engineering, The Johns Hopkins University, 3400 N. Charles Street, Baltimore, MD 21218, USA
| | - Peter Kim
- Sheikh Zyaed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue NW, Washington, DC 20010, USA
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Kanamori K. Averaged subtracted polarization imaging for endoscopic diagnostics of surface microstructures on translucent mucosae. JOURNAL OF BIOMEDICAL OPTICS 2016; 21:71105. [PMID: 26720052 DOI: 10.1117/1.jbo.21.7.071105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 11/24/2015] [Indexed: 06/05/2023]
Abstract
An endoscopic image processing technique for enhancing the appearance of microstructures on translucent mucosae is described. This technique employs two pairs of co- and cross-polarization images under two different linearly polarized lights, from which the averaged subtracted polarization image (AVSPI) is calculated. Experiments were then conducted using an acrylic phantom and excised porcine stomach tissue using a manual experimental setup with ring-type lighting, two rotating polarizers, and a color camera; better results were achieved with the proposed method than with conventional color intensity image processing. An objective evaluation method that uses texture analysis was developed and used to evaluate the enhanced microstructure images. This paper introduces two types of online, rigid-type, polarimetric endoscopic implementations using a polarized ring-shaped LED and a polarimetric camera. The first type uses a beam-splitter-type color polarimetric camera, and the second uses a single-chip monochrome polarimetric camera. Microstructures on the mucosa surface were enhanced robustly with these online endoscopes regardless of the difference in the extinction ratio of each device. These results show that polarimetric endoscopy using AVSPI is both effective and practical for hardware implementation.
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Clancy NT, Arya S, Qi J, Stoyanov D, Hanna GB, Elson DS. Polarised stereo endoscope and narrowband detection for minimal access surgery. BIOMEDICAL OPTICS EXPRESS 2014; 5:4108-17. [PMID: 25574424 PMCID: PMC4285591 DOI: 10.1364/boe.5.004108] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 10/23/2014] [Accepted: 10/29/2014] [Indexed: 05/03/2023]
Abstract
Polarisation imaging has the potential to provide enhanced contrast based on variations in the optical properties, such as scattering or birefringence, of the tissue of interest. Examining the signal at different wavebands in the visible spectrum also allows interrogation of different depths and structures. A stereo endoscope has been adapted to allow snapshot acquisition of orthogonal linear polarisation images to generate difference of linear polarisation images. These images are acquired in three narrow bands using a triple-bandpass filter and pair of colour cameras. The first in vivo results, acquired during a surgical procedure on a porcine subject, are presented that show wavelength dependent variations in vessel visibility and an increase in contrast under polarised detection.
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Affiliation(s)
- Neil T. Clancy
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation, Imperial College London, SW7 2AZ,
UK
- Department of Surgery and Cancer, Imperial College London, SW7 2AZ,
UK
| | - Shobhit Arya
- Department of Surgery and Cancer, Imperial College London, SW7 2AZ,
UK
| | - Ji Qi
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation, Imperial College London, SW7 2AZ,
UK
- Department of Surgery and Cancer, Imperial College London, SW7 2AZ,
UK
| | - Danail Stoyanov
- Centre for Medical Image Computing, Department of Computer Science, University College London, WC1E 6BT,
UK
| | - George B. Hanna
- Department of Surgery and Cancer, Imperial College London, SW7 2AZ,
UK
| | - Daniel S. Elson
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation, Imperial College London, SW7 2AZ,
UK
- Department of Surgery and Cancer, Imperial College London, SW7 2AZ,
UK
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Tuchin VV, Tárnok A, Zharov VP. In vivo flow cytometry: a horizon of opportunities. Cytometry A 2011; 79:737-45. [PMID: 21915991 PMCID: PMC3663136 DOI: 10.1002/cyto.a.21143] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Accepted: 08/24/2011] [Indexed: 12/12/2022]
Abstract
Flow cytometry (FCM) has been a fundamental tool of biological discovery for many years. Invasive extraction of cells from a living organism, however, may lead to changes in cell properties and prevents studying cells in their native environment. These problems can be overcome by use of in vivo FCM, which provides detection and imaging of circulating normal and abnormal cells directly in blood or lymph flow. The goal of this review is to provide a brief history, features, and challenges of this new generation of FCM methods and instruments. Spectrum of possibilities of in vivo FCM in biological science (e.g., cell metabolism, immune function, or apoptosis) and medical fields (e.g., cancer, infection, and cardiovascular disorder) including integrated photoacoustic-photothermal theranostics of circulating abnormal cells are discussed with focus on recent advances of this new platform.
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Affiliation(s)
- Valery V. Tuchin
- Research-Educational Institute of Optics and Biophotonics, Saratov State University, Saratov, 410012 Russia
- Institute of Precise Mechanics and Control, Russian Academy of Sciences, Saratov 410028, Russia
- University of Oulu, Oulu, FI-90014 Finland
| | - Attila Tárnok
- Pediatric Cardiology, Heart Center, University of Leipzig, Leipzig, G04289 Germany
| | - Vladimir P. Zharov
- Phillips Classic Laser and Nanomedicine Laboratories, University of Arkansas for Medical Sciences, Little Rock, Arkansas, 72205 USA
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