Modeling Photon Propagation Through Human Breast with Tumor in Diffuse Optical Tomography

2019 ◽  
pp. 227-233
Author(s):  
Shisir Mia ◽  
Md. Mijanur Rahman ◽  
Mohammad Motiur Rahman
Keyword(s):  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Human Breast ◽  
Photon Propagation

Diffuse Optical Tomography and Positron Emission Tomography of Human Breast

2006 ◽  
Author(s):  
Soren D. Konecky ◽  
Rony Wiener ◽  
Regine Choe ◽  
Alper Corlu ◽  
Kijoon Lee ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Emission Tomography ◽  
Human Breast ◽  
Positron Emission

scholarly journals Comparison of diffuse optical tomography of human breast with whole-body and breast-only positron emission tomography

2008 ◽  
Vol 35 (2) ◽  
pp. 446-455 ◽  
Author(s):  
Soren D. Konecky ◽  
Regine Choe ◽  
Alper Corlu ◽  
Kijoon Lee ◽  
Rony Wiener ◽  
...  
Keyword(s):  
Positron Emission Tomography ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Emission Tomography ◽  
Whole Body ◽  
Human Breast ◽  
Positron Emission

scholarly journals Age-related changes in diffuse optical tomography sensitivity profiles in infancy

PLoS ONE ◽  
2021 ◽  
Vol 16 (6) ◽  
pp. e0252036
Author(s):  
Xiaoxue Fu ◽  
John E. Richards
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Hemoglobin Concentration ◽  
Separation Distance ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Photon Propagation ◽  
Age Related ◽  
Wide Range

Diffuse optical tomography uses near-infrared light spectroscopy to measure changes in cerebral hemoglobin concentration. Anatomical interpretations of the location that generates the hemodynamic signal requires accurate descriptions of diffuse optical tomography sensitivity to the underlying cortical structures. Such information is limited for pediatric populations because they undergo rapid head and brain development. The present study used photon propagation simulation methods to examine diffuse optical tomography sensitivity profiles in realistic head models among infants ranging from 2 weeks to 24 months with narrow age bins, children (4 and 12 years) and adults (20 to 24 years). The sensitivity profiles changed systematically with the source-detector separation distance. The peak of the sensitivity function in the head was largest at the smallest separation distance and decreased as separation distance increased. The fluence value dissipated more quickly with sampling depth at the shorter source-detector separations than the longer separation distances. There were age-related differences in the shape and variance of sensitivity profiles across a wide range of source-detector separation distances. Our findings have important implications in the design of sensor placement and diffuse optical tomography image reconstruction in (functional) near-infrared light spectroscopy research. Age-appropriate realistic head models should be used to provide anatomical guidance for standalone near-infrared light spectroscopy data in infants.

scholarly journals Investigating Developmental Changes in Scalp-Cortex Correspondence Using Diffuse Optical Tomography Sensitivity in Infancy

2020 ◽  
Author(s):  
Xiaoxue Fu ◽  
John E. Richards
Keyword(s):  
Near Infrared ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Hemoglobin Concentration ◽  
Infrared Light ◽  
Photon Propagation ◽  
Age Related ◽  
Age Appropriate ◽  
Pediatric Populations ◽  
Cortical Regions

AbstractSignificanceDiffuse optical tomography (DOT) uses near-infrared light spectroscopy (NIRS) to measure changes in cerebral hemoglobin concentration. Anatomical interpretations of NIRS data requires accurate descriptions of the cranio-cerebral relations and DOT sensitivity to the underlying cortical structures. Such information is limited for pediatric populations because they undergo rapid head and brain development.AimThe present study aimed to investigate age-related differences in scalp-to-cortex distance and mapping between scalp locations and cortical regions of interest (ROIs) among infants (2 weeks to 24 months with narrow age bins), children (4 and 12 years) and adults (20 to 24 years).ApproachWe used spatial scalp projection and photon propagation simulation methods with age-matched realistic head models based on MRIs.ResultsThere were age-group differences in the scalp-to-cortex distances in infancy. The developmental increase was magnified in children and adults. There were systematic age-related differences in the probabilistic mappings between scalp locations and cortical ROIs.ConclusionsOur findings have important implications in the design of sensor placement and making anatomical interpretations in NIRS and fNIRS research. Age-appropriate realistic head models should be used to provide anatomical guidance for standalone DOT data in infants.

Transmission RF diffuse optical tomography instrument for human breast imaging

2007 ◽  
Author(s):  
Kijoon Lee ◽  
Soren D. Konecky ◽  
Regine Choe ◽  
Han Y. Ban ◽  
Alper Corlu ◽  
...  
Keyword(s):  
Breast Imaging ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Human Breast

Transmission RF diffuse optical tomography instrument for human breast imaging

2007 ◽  
Author(s):  
Kijoon Lee ◽  
Soren D. Konecky ◽  
Regine Choe ◽  
Han Y. Ban ◽  
Alper Corlu ◽  
...  
Keyword(s):  
Breast Imaging ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Human Breast

Evaluation of Muscle Activities in Human Forearms under Exercises by Diffuse Optical Tomography

2012 ◽  
Vol 132 (3) ◽  
pp. 374-383 ◽  
Author(s):  
Yukari Tanikawa ◽  
Feng Gao ◽  
Michio Miyakawa ◽  
Toru Kiryu ◽  
Tomohiro Kizuka ◽  
...  
Keyword(s):  
Optical Tomography ◽  
Diffuse Optical Tomography

scholarly journals High Resolution, Deep Imaging Using Confocal Time-of-flight Diffuse Optical Tomography

2021 ◽  
pp. 1-1
Author(s):  
Yongyi Zhao ◽  
Ankit Raghuram ◽  
Hyun Kim ◽  
Andreas Hielscher ◽  
Jacob T Robinson ◽  
...  
Keyword(s):  
High Resolution ◽  
Optical Tomography ◽  
Time Of Flight ◽  
Diffuse Optical Tomography ◽  
Deep Imaging
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