Articles that mention Daniël M. de Bruin -Optical Coherence Tomography News

Daniël M. de Bruin

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1. Mentioned In 44 Articles
2. Visibility of Fiducial Markers used for Image-Guided Radiation Therapy on Optical Coherence Tomography for Registration with CT: an Esophageal Phantom Study
  
  Explore Wiley Online Library 16 hours, 19 min ago Gastroenterology
  
  Purpose Optical coherence tomography (OCT) is of interest to visualize microscopic esophageal tumor extensions to improve tumor delineation for radiation therapy (RT) planning. Fiducial marker placement is a common method to ensure target localization during planning and treatment. Visualization of these fiducial markers on OCT permits integrating OCT and computed tomography (CT) images used for RT planning via image registration. We studied the visibility of 13 (8 types) commercially available ...
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  Mentions: Johannes F. de Boer Academic Medical Center at the University of Amsterdam Dirk J. Faber
3. Optical coherence tomography for identification and quantification of human airway wall layers
  
  Explore Journals | PLOS Oct 5 2017 Pulmonology
  
  Background High-resolution computed tomography has limitations in the assessment of airway wall layers and related remodeling in obstructive lung diseases. Near infrared-based optical coherence tomography (OCT) is a novel imaging technique that combined with bronchoscopy generates highly detailed images of the airway wall. The aim of this study is to identify and quantify human airway wall layers both ex-vivo and in-vivo by OCT and correlate these to histology. Methods Patients ...
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  Mentions: National Institutes of Health Academic Medical Center at the University of Amsterdam St. Jude Medical
4. Applicability of quantitative optical imaging techniques for intraoperative perfusion diagnostics: a comparison of laser speckle contrast imaging, sidestream dark-field microscopy, and optical coherence tomography
  
  Explore SPIE Digital Library Sep 2 2017
  
  . Patient morbidity and mortality due to hemodynamic complications are a major problem in surgery. Optical techniques can image blood flow in real-time and high-resolution, thereby enabling perfusion monitoring intraoperatively. We tested the feasibility and validity of laser speckle contrast imaging (LSCI), optical coherence tomography (OCT), and sidestream dark-field microscopy (SDF) for perfusion diagnostics in a phantom model using whole blood. Microvessels with diameters of 50, 100, and 400 m were ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber Ton G. van Leeuwen
5. Optical Coherence Tomography as a Tool for in Vivo Staging and Grading of Upper Urinary Tract Urothelial Carcinoma: A Study for Diagnostic Accuracy
  
  Explore Elsevier Health Jul 29 2016 Urology
  
  Purposes Biopsies and cytology are cornerstones in the diagnosis of upper urinary tract urothelial carcinoma (UTUC). However, a high rate of non-diagnostic biopsies, tumor upgrading and -staging after nephroureterectomy is observed. In this prospective in vivo study we aimed to evaluate the diagnostic accuracy of OCT for grading and staging of UTUC Material Methods Twenty-six patients underwent diagnostic URS including biopsies and OCT imaging, followed by nephroureterectomy or segmental ureter ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber Ton G. van Leeuwen
6. Prostate cancer diagnosis by optical coherence tomography: First results from a needle based optical platform for tissue sampling
  
  Explore Wiley Online Library Feb 9 2016 Oncology , Urology
  
  The diagnostic accuracy of Optical Coherence Tomography (OCT) based optical attenuation coefficient analysis is assessed for the detection of prostate cancer. Needle-based OCT-measurements were performed on the prostate specimens. Attenuation coefficients were determined by an earlier described in-house developed software package. The mean attenuation coefficients (benign OCT data; malignant OCT data; p-value Mann-Whitney U test) were: (3.56 mm 1 ; 3.85 mm 1 ; p 0.0001) for all patients ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber VU University Amsterdam
7. Customized Tool for the Validation of Optical Coherence Tomography in Differentiation of Prostate Cancer
  
  Explore tct.sagepub.com Jan 28 2016 Urology
  
  Objective: To design and demonstrate a customized tool to generate histologic sections of the prostate that directly correlate with needle-based optical coherence tomography pullback measurements. Materials and Methods: A customized tool was created to hold the prostatectomy specimens during optical coherence tomography measurements and formalin fixation. Using the tool, the prostate could be sliced into slices of 4 mm thickness through the optical coherence tomography measurement trajectory. In this way ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber VU University Amsterdam
8. Percutaneous Needle Based Optical Coherence Tomography for the Differentiation of Renal Masses: a Pilot Cohort
  
  Explore The Journal of Urology Dec 22 2015 Urology
  
  To view the full text, please login as a subscribed user or purchase a subscription . Click here to view the full text on ScienceDirect. The aim of this study is to determine the ability of percutaneous needle based Optical Coherence Tomography (OCT) to differentiate renal masses, by using the attenuation coefficient (OCT, mm-1) as a quantitative measure. Percutaneous needle based OCT of the kidney was performed in patients presenting with ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber Ton G. van Leeuwen
9. Learning curve and interobserver variance in quantification of the optical coherence tomography attenuation coefficient
  
  Explore SPIE | Journal Dec 15 2015
  
  The learning curve and interobserver variance of attenuation coefficient ( OCT ) determination from optical coherence tomography (OCT) images were quantified. The OCT of normal and diseased vulvar tissues was determined at five time points by three novice students and three OCT experts who reached consensus for reference. Students received feedback between time points. Eventually, variance in OCT was smaller in images of diseased tissue than in images of normal vulvar tissue ...
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  Mentions: University of Twente Academic Medical Center at the University of Amsterdam Dirk J. Faber
10. Assesment of apoptosis induced changes in scattering using optical coherence tomography
  
  Explore Wiley Online Library Nov 13 2015
  
  The aim of this study is to identify changes in scattering with optical coherence tomography (OCT) and relate these measurements with mitochondrial changes during the initiation of apoptosis. Human retinal pigment epithelial cells were cultured and apoptosis was induced using 10% alcohol. Using the attenuation coefficient and backscattering, changes were measured during cell death in a cell-pellet and monolayer respectively. To confirm apoptosis, fluorescent activated cell sorting was used. Mitochondrial ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber Ton G. van Leeuwen
11. Beyond Endoscopy-Ultrasound, Optical Coherence Tomography and Confocal Laser Endomicroscopy (Book Chapter)
  
  Explore Home - Springer Aug 18 2015 Gastroenterology , Textbooks
  
  One of the main challenges in endoscopic diagnosis and treatment of upper urinary tract urothelial carcinoma is the complicated anatomy and the small size of the upper urinary tract, resulting in high demands on the armamentarium and expertise of the urologist. Difficulties to reach the complete collecting system could result in an incomplete visual inspection.
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  Mentions: Academic Medical Center at the University of Amsterdam Daniël M. de Bruin Theo M. de Reijke
12. Optical coherence tomography accurately identifies patients with penile (pre) malignant lesions: A single center prospective study
  
  Explore Urology Annals Aug 13 2015
  
  Introduction: Currently, (multiple) biopsies are taken to obtain histopathological diagnosis of suspicious lesions of the penile skin. Optical coherence tomography (OCT) provides noninvasive in vivo images from which epidermal layer thickness and attenuation coefficient (m oct ) can be quantified. We hypothesize that qualitative (image assessment) and quantitative (epidermal layer thickness and attenuation coefficient, m oct ) analysis of penile skin with OCT is possible and may differentiate benign penile tissue from ...
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  Mentions: University of Twente Academic Medical Center at the University of Amsterdam Dirk J. Faber
13. Prostate cancer diagnosis: the feasibility of needle-based optical coherence tomography
  
  Explore SPIE | Journal Jul 14 2015 Urology
  
  The objective of this study is to demonstrate the feasibility of needle-based optical coherence tomography (OCT) and functional analysis of OCT data along the full pullback trajectory of the OCT measurement in the prostate, correlated with pathology. OCT images were recorded using a commercially available C7-XR OCT Intravascular Imaging System interfaced to a C7 Dragonfly intravascular 0.9-mm-diameter imaging probe. A computer program was constructed for automated image attenuation analysis ...
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  Mentions: Dirk J. Faber Ton G. van Leeuwen St. Jude Medical
14. Detection of buried Barrett’s glands after radiofrequency ablation with volumetric laser endomicroscopy
  
  Explore Gastrointestinal Endoscopy Jul 1 2015 Gastroenterology
  
  Background and Aims The prevalence and clinical relevance of buried Barretts glands (BB) after radiofrequency ablation (RFA) in Barretts esophagus (BE) are debated. Recent optical coherence tomography studies demonstrated a high prevalence of BBs. Direct histological correlation, however, has been lacking. Volumetric laser endomicroscopy (VLE) is a second-generation optical coherence tomography system capable of scanning a large surface of the esophageal wall layers with low-power microscopy resolution. The aim was ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber Ton G. van Leeuwen
15. Volumetric laser endomicroscopy in Barrett's esophagus: a feasibility study on histological correlation
  
  Explore Wiley Online Library May 9 2015 Gastroenterology
  
  Volumetric laser endomicroscopy (VLE) is a novel balloon-based optical coherence tomography (OCT) imaging technique that may improve detection of early neoplasia in Barrett's esophagus (BE). Most OCT studies lack a direct correlation between histology and OCT images. The aim is to investigate the optimal approach for achieving one-to-one correlation of ex-vivo VLE images of endoscopic resection (ER) specimens with histology. BE patients with and without early neoplasia underwent ER ...
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  Mentions: Academic Medical Center at the University of Amsterdam Dirk J. Faber Ton G. van Leeuwen
16. In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
  
  Explore jove.com Mar 30 2015 Probes
  
  Optical coherence tomography (OCT) is the optical equivalent of ultrasound imaging, based on the backscattering of near infrared light. OCT provides real time images with a 15 m axial resolution at an effective tissue penetration of 2-3 mm. Within the OCT images the loss of signal intensity per millimeter of tissue penetration, the attenuation coefficient, is calculated. The attenuation coefficient is a tissue specific property, providing a quantitative parameter for ...
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  Mentions: Dirk J. Faber Ton G. van Leeuwen St. Jude Medical
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