None
Home | All Articles | Entities | Email Newsletter | Comments | Login | Register
Categories: Bronchoscopy, Cardiology, Dentistry, Dermatology, Endoscopy, Glucose, Microscopy, Non-Medical, Ophthalmology, Acquisition, Funding, Jobs & Studentships, Partnership, Patents
Articles for category "Endoscopy"
Real-time swept source optical coherence tomography imaging of the human airway using a microelectromechanical system endoscope and digital signal processor
SPIE Digital Library (Jul 1 2008)
Bronchoscopy,
Endoscopy
Jianping Su, Jun Zhang, Lingfeng Yu et al. A fast-scan-rate swept laser for optical coherence tomography (OCT) is suitable to record and analyze a 3-D image volume. However, the whole OCT system speed is limited by data streaming, processing, and storage. In this case, postprocessing is a common technique. Endoscopic clinical applications pr ... [J. Biomed. Opt. 13, 030506 (2008)] published Tue Jul 1, 2008.
Optical Coherence Tomography in Inflammatory Bowel Disease: Prospective Evaluation of 35 Patients.
NCBI HomePage (Jun 12 2008)
Endoscopy
Optical Coherence Tomography in Inflammatory Bowel Disease: Prospective Evaluation of 35 Patients. Dis Colon Rectum. 2008 Jun 11; Authors: Consolo P, Strangio G, Luigiano C, Giacobbe G, Pallio S, Familiari L PURPOSE: Optical coherence tomography is a technique using infrared light in tissues of the gastrointestinal tract and human colon affected by inflammatory diseases. We evaluated whether there are specific patterns of optical coherence tomography for inflammatory bowel disease and ...
Effects of axial resolution improvement on optical coherence tomography (oct) imaging of gastrointestinal tissues.
NCBI HomePage (Jun 11 2008)
Endoscopy
Related Articles Effects of axial resolution improvement on optical coherence tomography (OCT) imaging of gastrointestinal tissues. Opt Express. 2008 Feb 18;16(4):2469-85 Authors: Chen Y, Aguirre AD, Hsiung PL, Huang SW, Mashimo H, Schmitt JM, Fujimoto JG Optical coherence tomography (OCT) is an emerging medical imaging technology which generates high resolution, cross-sectional images in situ, without the need for excisional biopsy. Previous clinical studies using endoscopic OCT with standard 10-15 microm ...
Optical Coherence Tomography in Inflammatory Bowel Disease: Prospective Evaluation of 35 Patients
SpringerLink Home (Jun 11 2008)
Endoscopy
Abstract Purpose Optical coherence tomography is a technique using infrared light in tissues of the gastrointestinal tract and human colon affected by inflammatory diseases. We evaluated whether there are specific patterns of optical coherence tomography for inflammatory bowel disease and compared the technique performance to the histology. Methods Optical coherence tomography was performed in 35 patients (18 men; 31 ulcerative colitis, 4 Crohn’s disease). The images were obtained from affected and normal ...
Fiber-optic rotational device, optical system and method for imaging a sample
A device, system and method for transmitting electro-magnetic radiation between at least two separate fibers (as well as for imaging a sample) are provided. For example, a first optical fiber and a second optical fiber may be provided, such that the first and/or second fibers is/are rotatable. At least one first optical arrangement may also be included which communicates with at least one end of the first optical fiber and/or ...
A device, system and method for transmitting electro-magnetic radiation between at least two separate fibers (as well as for imaging a sample) are provided. For example, a first optical fiber and a second optical fiber may be provided, such that the first and/or second fibers is/are rotatable. At least one first optical arrangement may also be included which communicates with at least one end of the first optical fiber and/or ...
Bronchoscopy for the Diagnosis and Staging of Lung Cancer
thieme-connect.com (May 29 2008)
Bronchoscopy,
Endoscopy
Bronchoscopy is an invaluable tool utilized for the diagnosis, staging, and management of lung cancer. Advancements in computer technology and engineering have allowed for the emergence of newer modalities to evaluate endobronchial, parenchymal, and mediastinal pathology. Established techniques such as white light video bronchoscopy and its ancillary procedures (forceps biopsy, brush biopsy, bronchoalveolar lavage, bronchial washings, and transbronchial needle aspiration) are discussed here, with their accuracy described in relation to ...
Systems and Methods for Dynamic Optical Imaging
A medical system includes a catheter having an elongated tubular member and an inner core slideably received within the elongated member. The inner core includes an imager on a distal end and is coupled with a control system and an imaging system. The inner core is configured to scan the interior of a lumen by radially rotating around a center axis and axially translating along the center axis while within ...
A medical system includes a catheter having an elongated tubular member and an inner core slideably received within the elongated member. The inner core includes an imager on a distal end and is coupled with a control system and an imaging system. The inner core is configured to scan the interior of a lumen by radially rotating around a center axis and axially translating along the center axis while within ...
Respiratory gating of endoscopic OCT images of the upper airway
SPIE Digital Library (May 16 2008)
Bronchoscopy,
Endoscopy
Robert A. McLaughlin, Julian J. Armstrong, Sven Becker et al. Anatomical optical coherence tomography (aOCT) is an endoscopic imaging modality that can be used to quantify size and shape of the upper airway. We report the application of respiratory gating to aOCT images. Our results show that respiratory gating can reduce motion artefact in upper airway images ... [Proc. SPIE 7004, 70045V (2008)] published Fri May 16, 2008.
Handheld forward-imaging needle endoscope for ophthalmic optical coherence tomography inspection.
NCBI HomePage (May 10 2008)
Endoscopy,
Ophthalmology
Related Articles Handheld forward-imaging needle endoscope for ophthalmic optical coherence tomography inspection. J Biomed Opt. 2008 March/April;13(2):020505 Authors: Han S, Sarunic MV, Wu J, Humayun M, Yang C We report the narrowest to-date (21 gauge, 820-mum-diam) handheld forward-imaging optical coherence tomography (OCT) needle endoscope and demonstrate its feasibility for ophthalmic OCT inspection. The probe design is based on paired-angle-rotation scanning (PARS), which enables a linear B-scan pattern in front of ...
Computer recognition of cancer in the urinary bladder using optical coherence tomography and texture analysis.
NCBI HomePage (May 10 2008)
Endoscopy
Related Articles Computer recognition of cancer in the urinary bladder using optical coherence tomography and texture analysis. J Biomed Opt. 2008 Mar-Apr;13(2):024003 Authors: Lingley-Papadopoulos CA, Loew MH, Manyak MJ, Zara JM The vast majority of bladder cancers originate within 600 mum of the tissue surface, making optical coherence tomography (OCT) a potentially powerful tool for recognizing cancers that are not easily visible with current techniques. OCT is a new technology, ...
Optical design of a dynamic focus catheter for high-resolution endoscopic optical coherence tomography.
NCBI HomePage (May 2 2008)
Endoscopy,
Ophthalmology
Optical design of a dynamic focus catheter for high-resolution endoscopic optical coherence tomography. Appl Opt. 2008 May 1;47(13):2452-7 Authors: Meemon P, Lee KS, Murali S, Rolland J The optical system design of a dynamic focus endoscopic probe for optical coherence tomography is reported. The dynamic focus capability is based on a liquid lens technology that provides variable focus by changing its curvatures in response to an electric field variation. The ...
Paired angled rotation scanning probes and methods of use
Probes, and systems and methods for optically scanning a conical volume in front of a probe, for use with an imaging modality, such as Optical Coherence Tomography (OCT). A probe includes an optical fiber having a proximal end and a distal end and defining an axis, with the proximal end of the optical fiber being proximate a light source, and the distal end having a first angled surface. A refractive ...
Probes, and systems and methods for optically scanning a conical volume in front of a probe, for use with an imaging modality, such as Optical Coherence Tomography (OCT). A probe includes an optical fiber having a proximal end and a distal end and defining an axis, with the proximal end of the optical fiber being proximate a light source, and the distal end having a first angled surface. A refractive ...
Optical design of a dynamic focus catheter for high-resolution endoscopic optical coherence tomography
opticsinfobase.org (Apr 25 2008)
Endoscopy
Panomsak Meemon, Kye-Sung Lee, Supraja Murali, Jannick Rolland The optical system design of a dynamic focus endoscopic probe for optical coherence tomography is reported. The dynamic focus capability is based on a liquid lens technology that provides variable focus by changing its curvatures in response to an electric field variation. The effects of a ... [Appl. Opt. 47, 2452-2457 (2008)]
Handheld forward-imaging needle endoscope for ophthalmic optical coherence tomography inspection
SPIE Digital Library (Apr 21 2008)
Endoscopy,
Ophthalmology
Shuo Han, Marinko V. Sarunic, Jigang Wu et al. We report the narrowest to-date (21 gauge, 820-[mu]m-diam) handheld forward-imaging optical coherence tomography (OCT) needle endoscope and demonstrate its feasibility for ophthalmic OCT inspection. The probe design is based on paired-angle-rotation scanning (PARS), which enables a linear B-scan pat ... [J. Biomed. Opt. 13, 020505 (2008)] published Mon Apr 21, 2008.
Forward-Looking, Optical Coherence Tomography Endoscope (Wo 2008/045851)
A forward-looking, optical coherence tomography, endoscopic probe is disclosed capable of high resolution with a small diameter. Light is focused and scanned during three passes through a lens. A light source supplies light to the proximal side of the lens. The light makes a first pass through the lens, and is reflected from a fixed mirror on the distal side. The reflected light makes a second pass from the distal ...
A forward-looking, optical coherence tomography, endoscopic probe is disclosed capable of high resolution with a small diameter. Light is focused and scanned during three passes through a lens. A light source supplies light to the proximal side of the lens. The light makes a first pass through the lens, and is reflected from a fixed mirror on the distal side. The reflected light makes a second pass from the distal ...
An Intrapancreatic Cholangiocarcinoma Detected With Optical Coherence Tomography During Endoscopic Retrograde Cholangiopancreatography.
NCBI HomePage (Apr 15 2008)
Endoscopy
An Intrapancreatic Cholangiocarcinoma Detected With Optical Coherence Tomography During Endoscopic Retrograde Cholangiopancreatography. Clin Gastroenterol Hepatol. 2008 Apr 11; Authors: Mangiavillano B, Mariani A A, Petrone MC PMID: 18407794 [PubMed - as supplied by publisher]
Anatomical Optical Coherence Tomography for Long-Term, Portable, Quantitative Endoscopy
IEEE Xplore (Apr 9 2008)
Endoscopy
n this paper, we report on anatomical optical coherence tomography, a catheter-based optical modality designed to provide quantitative sectional images of internal hollow organ anatomy over extended observational periods. We consider the design and performance of an instrument and its initial intended application in the human upper airway for the characterization of obstructive sleep apnea (OSA). Compared with current modalities, the technique uniquely combines quantitative imaging, bedside operation, and safety ...
Anatomical optical coherence tomography for long-term, portable, quantitative endoscopy.
NCBI HomePage (Apr 9 2008)
Endoscopy
Anatomical optical coherence tomography for long-term, portable, quantitative endoscopy. IEEE Trans Biomed Eng. 2008 Apr;55(4):1438-46 Authors: Leigh MS, Armstrong JJ, Paduch A, Walsh JH, Hillman DR, Eastwood PR, Sampson DD In this paper, we report on anatomical optical coherence tomography, a catheter-based optical modality designed to provide quantitative sectional images of internal hollow organ anatomy over extended observational periods. We consider the design and performance of an instrument and its ...
In vivo Optical Coherence Tomography Imaging of Preinvasive Bronchial Lesions
Clinical Cancer Research (Apr 3 2008)
Bronchoscopy,
Endoscopy
Purpose: Optical coherence tomography (OCT) is an optical imaging method that can visualize cellular and extracellular structures at and below tissue surface. The objective of the study was to determine if OCT could characterize preneoplastic changes in the bronchial epithelium identified by autofluorescence bronchoscopy. Experimental Design: A 1.5-mm fiberoptic probe was inserted via a bronchoscope into the airways of 138 volunteer heavy smokers participating in a chemoprevention trial and 10 ...
In vivo Optical Coherence Tomography Imaging of Preinvasive Bronchial Lesions.
NCBI HomePage (Apr 3 2008)
Bronchoscopy,
Endoscopy
Related Articles In vivo Optical Coherence Tomography Imaging of Preinvasive Bronchial Lesions. Clin Cancer Res. 2008 Apr 1;14(7):2006-11 Authors: Lam S, Standish B, Baldwin C, McWilliams A, Leriche J, Gazdar A, Vitkin AI, Yang V, Ikeda N, Macaulay C PURPOSE: Optical coherence tomography (OCT) is an optical imaging method that can visualize cellular and extracellular structures at and below tissue surface. The objective of the study was to determine if ...
Electrostatic forward-viewing scanning probe for Doppler optical coherence tomography using a dissipative polymer catheter.
NCBI HomePage (Apr 3 2008)
Cardiology,
Endoscopy
Related Articles Electrostatic forward-viewing scanning probe for Doppler optical coherence tomography using a dissipative polymer catheter. Opt Lett. 2008 Apr 1;33(7):657-9 Authors: Munce NR, Mariampillai A, Standish BA, Pop M, Anderson KJ, Liu GY, Luk T, Courtney BK, Wright GA, Vitkin IA, Yang VX A novel flexible scanning optical probe is constructed with a finely etched optical fiber strung through a platinum coil in the lumen of a dissipative polymer. ...
Fiber optic tunable probe for endoscopic optical coherence tomography
Institute of Physics (Apr 2 2008)
Endoscopy,
Ophthalmology
Khaled Aljasem, Armin Werber, Andreas Seifert and Hans Zappe Abstract. A novel miniaturized fiber optic tunable endoscopic probe based on a pneumatically actuated micro-lens is presented. The probe has a diameter of ~4 mm and is integrated into a time-domain optical coherence tomography (OCT) system. The integration of the tunable lens with the OCT system leads to a uniformly high lateral resolution and high contrast of the OCT images over ...
Electrostatic Forward-Viewing Scanning Probe for Doppler Optical Coherence Tomography using a Dissipative Polymer Catheter
Ryerson University (Mar 29 2008)
Cardiology,
Endoscopy
Optical Coherence Tomography Imaging as a Quality Assurance Tool for Evaluating Endoscopic Harvest of the Radial Artery
The Annals of Thoracic Surgery (Mar 29 2008)
Cardiology,
Endoscopy
Background: Concerns about intimal disruption and spasm have limited enthusiasm for endoscopic radial artery harvest (ERAH), although the risk of these problems after this procedure remains uncertain. Radial artery conduits were screened intraoperatively before and after ERAH vs open harvest using catheter-based high-resolution optical coherence tomography (OCT) imaging. Methods: Twenty-four cadavers and 60 coronary artery bypass graft (CABG) patients scheduled to receive a RA graft underwent OCT imaging before (in ...