Explanipedia

Separating Surface Reflectance from Volume Reflectance in Medical Hyperspectral Imaging Open

Lynn-Jade S. Jong, Anouk L. Post, Freija Geldof, Behdad Dashtbozorg, Theo J. M. Ruers , et al. · 2024

Hyperspectral imaging has shown great promise for diagnostic applications, particularly in cancer surgery. However, non-bulk tissue-related spectral variations complicate the data analysis. Common techniques, such as standard normal variat…

Model for the diffuse reflectance in spatial frequency domain imaging (Erratum) Open

Anouk L. Post, Dirk J. Faber, Ton G. van Leeuwen · 2024

[This corrects the article DOI: 10.1117/1.JBO.28.4.046002.].

Size and depth of residual tumor after neoadjuvant chemoradiotherapy in rectal cancer – implications for the development of new imaging modalities for response assessment Open

Stefan D. van der Stel, José G. van den Berg, Pétur Snæbjörnsson, Iris M. Seignette, Mark Witteveen , et al. · 2023

With the shift towards organ preserving treatment strategies in rectal cancer it has become increasingly important to accurately discriminate between a complete and good clinical response after neoadjuvant chemoradiotherapy (CRT). Standard…

Considering the Influence of Coronary Motion on Artery-Specific Biomechanics Using Fluid–Structure Interaction Simulation Open

Nicholas A. Fogell, M. Patel, Pan Yang, Roosje M. Ruis, David B. Garcia , et al. · 2023

The endothelium in the coronary arteries is subject to wall shear stress and vessel wall strain, which influences the biology of the arterial wall. This study presents vessel-specific fluid–structure interaction (FSI) models of three coron…

Tissue Classification of Breast Cancer by Hyperspectral Unmixing Open

Lynn-Jade S. Jong, Anouk L. Post, Dinusha Veluponnar, Freija Geldof, Henricus J. C. M. Sterenborg , et al. · 2023

(1) Background: Assessing the resection margins during breast-conserving surgery is an important clinical need to minimize the risk of recurrent breast cancer. However, currently there is no technique that can provide real-time feedback to…

Model for the diffuse reflectance in spatial frequency domain imaging Open

Anouk L. Post, Dirk J. Faber, Ton G. van Leeuwen · 2023

For the diffuse reflectance in SFDI, the model based on the PCBC provides more accurate results than the currently used model by Cuccia et al.

Comparison of preprocessing techniques to reduce nontissue-related variations in hyperspectral reflectance imaging Open

Mark Witteveen, Henricus J. C. M. Sterenborg, Ton G. van Leeuwen, Maurice C. G. Aalders, Theo J. M. Ruers , et al. · 2022

Preprocessing reduces the overlap due to glare and distance variations. In general, the algorithms standard normal variate, min-max, area under the curve, and single wavelength normalization are the most suitable to preprocess data used to…

Opportunities and pitfalls in (sub)diffuse reflectance spectroscopy Open

Mark Witteveen, Dirk J. Faber, Henricus J. C. M. Sterenborg, Theo J. M. Ruers, Ton G. van Leeuwen , et al. · 2022

For a long time, steady-state reflectance spectroscopy measurements have been performed so that diffusion theory could be used to extract tissue optical properties from the reflectance. The development of subdiffuse techniques, such as Sin…

Experimental validation of a recently developed model for single-fiber reflectance spectroscopy Open

Anouk L. Post, Dirk J. Faber, Henricus J. C. M. Sterenborg, Ton G. van Leeuwen · 2021

Our recently developed model provides accurate results for MDSFR measurements but not for a single fiber. The psb parametrization prevents overfitting and speeds up the fit.

Subdiffuse scattering and absorption model for single fiber reflectance spectroscopy Open

Anouk L. Post, Dirk J. Faber, Henricus J. C. M. Sterenborg, Ton G. van Leeuwen · 2020

Single fiber reflectance (SFR) spectroscopy is a technique that is sensitive to small-scale changes in tissue. An additional benefit is that SFR measurements can be performed through endoscopes or biopsy needles. In SFR spectroscopy, a sin…

3D co-registration algorithm for catheter-based optical coherence tomography Open

Anouk L. Post, Paul Cernohorsky, Ryan M. Pedrigi, Geert J. Streekstra, Julia N.S. d’Hooghe , et al. · 2020

Applications of catheter-based optical coherence tomography (OCT) - originally developed for cardiovascular imaging - have expanded to other organ systems. However, currently available algorithms to co-register 3D OCT data to a second imag…

Noise and bias in optical coherence tomography intensity signal decorrelation Open

Néstor Uribe‐Patarroyo, Anouk L. Post, Sebastián Ruiz-Lopera, Dirk J. Faber, Brett E. Bouma · 2020

Functional optical coherence tomography (OCT) imaging based on the decorrelation of the intensity signal has been used extensively in angiography and is finding use in flowmetry and therapy monitoring. In this work, we present a rigorous a…

Subdiffuse scattering model for single fiber reflectance spectroscopy Open

Anouk L. Post, Henricus J. C. M. Sterenborg, Fransien G. Woltjer, Ton G. van Leeuwen, Dirk J. Faber · 2020

To detect small-scale changes in tissue with optical techniques, small sampling volumes are required. Single fiber reflectance (SFR) spectroscopy has a sampling depth of a few hundred micrometers. SFR spectroscopy uses a single fiber to em…

Quantifying tissue optical properties with Single Fiber Reflectance spectroscopy: Modeling the short journey of photons Open

Anouk L. Post · 2020

In de biomedische optica onderzoeken we de interactie van licht met weefsel voor het ontwikkelen van diagnostische en therapeutische technieken. Als licht zich door weefsel verplaatst treden er in grote lijnen twee verschillende processen …

Modeling subdiffusive light scattering by incorporating the tissue phase function and detector numerical aperture (Erratum) Open

Anouk L. Post, Steven L. Jacques, Henricus J. C. M. Sterenborg, Dirk J. Faber, Ton G. van Leeuwen · 2019

This article [J. Biomed. Opt. 22(5), 050501 (2017), doi: 10 .1117/1.JBO.22.5.050501] was originally published online on 22 May 2017, with an error in a subset of the phase functions used in the simulations. Instead of double Henyey Greenst…

Refractive index measurement using single fiber reflectance spectroscopy Open

Xu U. Zhang, Dirk J. Faber, Anouk L. Post, Ton G. van Leeuwen, Henricus J. C. M. Sterenborg · 2019

A method using single fiber reflectance spectroscopy to measure the refractive indices of transparent and turbid media over a broad wavelength range is presented and tested. For transparent liquid samples, the accuracy is within 0.2%, and …

Modeling subdiffusive light scattering by incorporating the tissue phase function and detector numerical aperture Open

Anouk L. Post, Steven L. Jacques, Henricus J. C. M. Sterenborg, Dirk J. Faber, Ton G. van Leeuwen · 2017

This erratum corrects an error in "Modeling subdiffusive light scattering by incorporating the tissue phase function and detector numerical aperture."

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