Volumetric imaging of hemodynamic effects in the human brain by three-dimensional diffuse optical tomography

2002 ◽  
Author(s):  
A.H. Hielscher ◽  
A. Bluestone ◽  
C. Schmitz ◽  
R.L. Barbour ◽  
G. Abdoulaev
Keyword(s):  
Human Brain ◽  
Optical Tomography ◽  
Three Dimensional ◽  
Diffuse Optical Tomography ◽  
Hemodynamic Effects ◽  
Volumetric Imaging

Three-dimensional Diffuse Optical Tomography in the Human Brain

2010 ◽  
Author(s):  
Haijing Niu ◽  
Zi-Jing Lin ◽  
Fenghua Tian ◽  
Sameer Dhamne ◽  
Hanli Liu
Keyword(s):  
Human Brain ◽  
Optical Tomography ◽  
Three Dimensional ◽  
Diffuse Optical Tomography

scholarly journals Imaging the Human Thyroid Using Three-Dimensional Diffuse Optical Tomography: A Preliminary Study

2021 ◽  
Vol 11 (4) ◽  
pp. 1670
Author(s):  
Tetsuya Mimura ◽  
Shinpei Okawa ◽  
Hiroshi Kawaguchi ◽  
Yukari Tanikawa ◽  
Yoko Hoshi
Keyword(s):  
Optical Tomography ◽  
Tumor Hypoxia ◽  
Three Dimensional ◽  
Diffuse Optical Tomography ◽  
Element Model ◽  
Needle Aspiration ◽  
Human Thyroid ◽  
Tissue Oxygen Saturation ◽  
Preliminary Study ◽  
First Time

Thyroid cancer is usually diagnosed by ultrasound imaging and fine-needle aspiration biopsy. However, diagnosis of follicular thyroid carcinomas (FTC) is difficult because FTC lacks nuclear atypia and a consensus on histological interpretation. Diffuse optical tomography (DOT) offers the potential to diagnose FTC because it can measure tumor hypoxia, while image reconstruction of the thyroid is still challenging mainly due to the complex anatomical features of the neck. In this study, we attempted to solve this issue by creating a finite element model of the human neck excluding the trachea (a void region). By reconstruction of the absorption coefficients at three wavelengths, 3D tissue oxygen saturation maps of the human thyroid are obtained for the first time by DOT.

Three-dimensional surface reconstruction within noncontact diffuse optical tomography using structured light

2012 ◽  
Vol 17 (12) ◽  
pp. 126009 ◽  
Author(s):  
Kirstin Baum ◽  
Raimo Hartmann ◽  
Tobias Bischoff ◽  
Jan O. Oelerich ◽  
Stephan Finkensieper ◽  
...  
Keyword(s):  
Surface Reconstruction ◽  
Structured Light ◽  
Optical Tomography ◽  
Three Dimensional ◽  
Diffuse Optical Tomography ◽  
Dimensional Surface

Acceleration of the EM-like reconstruction method for diffuse optical tomography with ordered-subsets method

2014 ◽  
Vol 22 (3) ◽  
Author(s):  
Caifang Wang
Keyword(s):  
Numerical Experiments ◽  
Imaging Modality ◽  
Random Medium ◽  
Optical Tomography ◽  
Back Propagation ◽  
Three Dimensional ◽  
Diffuse Optical Tomography ◽  
Optical Parameters ◽  
Reconstruction Method ◽  
Boundary Measurements

Abstract.Diffuse optical tomography (DOT) is an optical imaging modality, which provides the spatial distribution of the optical parameters inside a random medium. A propagation back-propagation method named EM-like reconstruction method for stationary DOT problem has been proposed yet. This method is really time consuming. Hence the ordered-subsets (OS) technique for this reconstruction method is studied in this paper. The boundary measurements of DOT are grouped into nonoverlapping and overlapping ordered sequence of subsets with random partition, sequential partition and periodic partition, respectively. The performance of OS methods is compared with the standard EM-like reconstruction method with two-dimensional and three-dimensional numerical experiments. The numerical experiments indicate that reconstruction of nonoverlapping subsets with periodic partition, overlapping subsets with periodic partition and standard EM-like method provide very similar acceptable reconstruction results. However, reconstruction of nonoverlapping subsets with periodic partition spends a minimum of time to get proper results.

scholarly journals Estimation and Statistical Bounds for Three-Dimensional Polar Shapes in Diffuse Optical Tomography

2008 ◽  
Vol 27 (6) ◽  
pp. 752-765 ◽  
Author(s):  
G. Boverman ◽  
E.L. Miller ◽  
D.H. Brooks ◽  
D. Isaacson ◽  
Qianqian Fang ◽  
...  
Keyword(s):  
Optical Tomography ◽  
Three Dimensional ◽  
Diffuse Optical Tomography

scholarly journals Functional imaging of the human brain using a modular, fibre-less, high-density diffuse optical tomography system

2016 ◽  
Vol 7 (10) ◽  
pp. 4275 ◽  
Author(s):  
Danial Chitnis ◽  
Robert J. Cooper ◽  
Laura Dempsey ◽  
Samuel Powell ◽  
Simone Quaggia ◽  
...  
Keyword(s):  
Human Brain ◽  
Functional Imaging ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Tomography System
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