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Proceedings Paper

Characterizing the spatial distribution of microhemorrhages resulting from Traumatic Brain Injury (TBI)
Author(s): Ningzhi Li; Yi-Yu Chou; Navid Shiee; Leighton Chan; Dzung L. Pham; John A. Butman
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Paper Abstract

This study examines the spatial distribution of microhemorrhages defined using susceptibility weighted images (SWI) in 46 patients with Traumatic Brain Injury (TBI) and applying region of interest (ROI) analysis using a brain atlas. SWI and 3D T1-weighted images were acquired on a 3T clinical Siemens scanner. A neuroradiologist reviewed all SWI images and manually labeled all identified microhemorrhages. To characterize the spatial distribution of microhemorrhages in standard Montreal Neurological Institute (MNI) space, the T1-weighted images were nonlinearly registered to the MNI template. This transformation was then applied to the co-registered SWI images and to the microhemorrhage coordinates. The frequencies of microhemorrhages were determined in major structures from ROIs defined in the digital Talairach brain atlas and in white matter tracts defined using a diffusion tensor imaging atlas. A total of 629 microhemorrhages were found with an average of 22±42 (range=1-179) in the 24 positive TBI patients. Microhemorrhages mostly congregated around the periphery of the brain and were fairly symmetrically distributed, although a number were found in the corpus callosum. From Talairach ROI analysis, microhemorrhages were most prevalent in the frontal lobes (65.1%). Restricting the analysis to WM tracts, microhemorrhages were primarily found in the corpus callosum (56.9%).

Paper Details

Date Published: 13 March 2014
PDF: 8 pages
Proc. SPIE 9038, Medical Imaging 2014: Biomedical Applications in Molecular, Structural, and Functional Imaging, 90381Q (13 March 2014); doi: 10.1117/12.2043750
Show Author Affiliations
Ningzhi Li, Ctr. for Neuroscience and Regenerative Medicine (United States)
Yi-Yu Chou, Ctr. for Neuroscience and Regenerative Medicine (United States)
Navid Shiee, Ctr. for Neuroscience and Regenerative Medicine (United States)
Leighton Chan, National Institutes of Health (United States)
Dzung L. Pham, Ctr. for Neuroscience and Regenerative Medicine (United States)
John A. Butman, Ctr. for Neuroscience and Regenerative Medicine (United States)
National Institutes of Health (United States)


Published in SPIE Proceedings Vol. 9038:
Medical Imaging 2014: Biomedical Applications in Molecular, Structural, and Functional Imaging
Robert C. Molthen; John B. Weaver, Editor(s)

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