scholarly journals Global motion detection and censoring in high‐density diffuse optical tomography

2020 ◽  
Vol 41 (14) ◽  
pp. 4093-4112 ◽  
Author(s):  
Arefeh Sherafati ◽  
Abraham Z. Snyder ◽  
Adam T. Eggebrecht ◽  
Karla M. Bergonzi ◽  
Tracy M. Burns‐Yocum ◽  
...  
Keyword(s):  
Motion Detection ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Global Motion

scholarly journals Global Motion Detection and Censoring in High-Density Diffuse Optical Tomography

2020 ◽  
Author(s):  
Arefeh Sherafati ◽  
Abraham Z. Snyder ◽  
Adam T. Eggebrecht ◽  
Karla M. Bergonzi ◽  
Tracy M. Burns-Yocum ◽  
...  
Keyword(s):  
Motion Detection ◽  
Near Infrared ◽  
Characteristic Curve ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
Principal Component ◽  
Receiver Operator Characteristic Curve ◽  
High Density ◽  
Detection Methods ◽  
Functional Near Infrared Spectroscopy

AbstractMotion-induced artifacts can significantly corrupt optical neuroimaging, as in most neuroimaging modalities. For high-density diffuse optical tomography (HD-DOT) with hundreds to thousands of source-detector pair measurements, motion detection methods are underdeveloped relative to both functional magnetic resonance imaging (fMRI) and standard functional near-infrared spectroscopy (fNIRS). This limitation restricts the application of HD-DOT in many challenging situations and subject populations (e.g., bedside monitoring and children). Here, we evaluate a new motion detection method for multichannel optical imaging systems that leverages spatial patterns across channels. Specifically, we introduce a global variance of temporal derivatives (GVTD) metric as a motion detection index. We show that GVTD strongly correlates with external measures of motion and has high sensitivity and specificity to instructed motion - with area under the receiver operator characteristic curve of 0.88, calculated based on five different types of instructed motion. Additionally, we show that applying GVTD-based motion censoring on both task and resting state HD-DOT data with natural head motion results in an improved spatial similarity to fMRI mapping for the same respective protocols (task or rest). We then compare the GVTD similarity scores with several commonly used motion correction methods described in the fNIRS literature, including correlation-based signal improvement (CBSI), temporal derivative distribution repair (TDDR), wavelet filtering, and targeted principal component analysis (tPCA). We find that GVTD motion censoring outperforms other methods and results in spatial maps more similar to matched fMRI data.

scholarly journals Functional imaging of the developing brain with wearable high-density diffuse optical tomography: A new benchmark for infant neuroimaging outside the scanner environment

NeuroImage ◽  
2021 ◽  
Vol 225 ◽  
pp. 117490
Author(s):  
Elisabetta Maria Frijia ◽  
Addison Billing ◽  
Sarah Lloyd-Fox ◽  
Ernesto Vidal Rosas ◽  
Liam Collins-Jones ◽  
...  
Keyword(s):  
Functional Imaging ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Developing Brain

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

scholarly journals Portable, field-based neuroimaging using high-density diffuse optical tomography

NeuroImage ◽  
2020 ◽  
Vol 215 ◽  
pp. 116541 ◽  
Author(s):  
Andrew K. Fishell ◽  
Ana María Arbeláez ◽  
Claudia P. Valdés ◽  
Tracy M. Burns-Yocum ◽  
Arefeh Sherafati ◽  
...  
Keyword(s):  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density

scholarly journals High-density diffuse optical tomography for imaging human brain function

2019 ◽  
Vol 90 (5) ◽  
pp. 051101 ◽  
Author(s):  
Muriah D. Wheelock ◽  
Joseph P. Culver ◽  
Adam T. Eggebrecht
Keyword(s):  
Human Brain ◽  
Brain Function ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density

Imaging speech comprehension in quiet with high density diffuse optical tomography

2014 ◽  
Author(s):  
Mahlega S. Hassanpour ◽  
Adam T. Eggebrecht ◽  
Jonathan E. Peelle ◽  
Joseph P. Culver
Keyword(s):  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Speech Comprehension

scholarly journals Retinotopic mapping of adult human visual cortex with high-density diffuse optical tomography

2007 ◽  
Vol 104 (29) ◽  
pp. 12169-12174 ◽  
Author(s):  
B. W. Zeff ◽  
B. R. White ◽  
H. Dehghani ◽  
B. L. Schlaggar ◽  
J. P. Culver
Keyword(s):  
Visual Cortex ◽  
Optical Tomography ◽  
Diffuse Optical Tomography ◽  
High Density ◽  
Human Visual Cortex ◽  
Retinotopic Mapping ◽  
Adult Human
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