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Test-Retest and Interreader Reproducibility of Semiautomated Atlas-Based Analysis of Diffusion Tensor Imaging Data in Acute Cervical Spine Trauma in Adult Patients

Test-Retest and Interreader Reproducibility of Semiautomated Atlas-Based Analysis of Diffusion... ORIGINAL RESEARCH SPINE Test-Retest and Interreader Reproducibility of Semiautomated Atlas-Based Analysis of Diffusion Tensor Imaging Data in Acute Cervical Spine Trauma in Adult Patients X D.J. Peterson, X A.M. Rutman, X D.S. Hippe, X J.G. Jarvik, X F.H. Chokshi, X M.R. Reyes, X C.H. Bombardier, and X M. Mossa-Basha ABSTRACT BACKGROUND AND PURPOSE: DTI is a tool for microstructural spinal cord injury evaluation. This study evaluated the reproducibility of a semiautomated segmentation algorithm of spinal cord DTI. MATERIALS AND METHODS: Forty-two consecutive patients undergoing acute trauma cervical spine MR imaging underwent 2 axial DTI scans in addition to their clinical scan. The datasets were put through a semiautomated probabilistic segmentation algorithm that selected white matter, gray matter, and 24 individual white matter tracts. Regional and white matter tract volume, fractional anisotropy, and mean diffusivity values were calculated. Two readers performed the nonautomated steps to evaluate interreader reproducibility. The coeffi- cient of variation and intraclass correlation coefficient were used to assess test-retest and interreader reproducibility. RESULTS: Of 42 patients, 30 had useable data. Test-retest reproducibility of fractional anisotropy was high for white matter as a whole (coefficient of variation, 3.8%; intraclass correlation coefficient, 0.93). Test-retest coefficient-of-variation ranged from 8.0%–18.2% and http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Neuroradiology American Journal of Neuroradiology

Test-Retest and Interreader Reproducibility of Semiautomated Atlas-Based Analysis of Diffusion Tensor Imaging Data in Acute Cervical Spine Trauma in Adult Patients

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References (27)

Publisher
American Journal of Neuroradiology
Copyright
© 2017 by American Journal of Neuroradiology
ISSN
0195-6108
eISSN
1936-959X
DOI
10.3174/ajnr.A5334
Publisher site
See Article on Publisher Site

Abstract

ORIGINAL RESEARCH SPINE Test-Retest and Interreader Reproducibility of Semiautomated Atlas-Based Analysis of Diffusion Tensor Imaging Data in Acute Cervical Spine Trauma in Adult Patients X D.J. Peterson, X A.M. Rutman, X D.S. Hippe, X J.G. Jarvik, X F.H. Chokshi, X M.R. Reyes, X C.H. Bombardier, and X M. Mossa-Basha ABSTRACT BACKGROUND AND PURPOSE: DTI is a tool for microstructural spinal cord injury evaluation. This study evaluated the reproducibility of a semiautomated segmentation algorithm of spinal cord DTI. MATERIALS AND METHODS: Forty-two consecutive patients undergoing acute trauma cervical spine MR imaging underwent 2 axial DTI scans in addition to their clinical scan. The datasets were put through a semiautomated probabilistic segmentation algorithm that selected white matter, gray matter, and 24 individual white matter tracts. Regional and white matter tract volume, fractional anisotropy, and mean diffusivity values were calculated. Two readers performed the nonautomated steps to evaluate interreader reproducibility. The coeffi- cient of variation and intraclass correlation coefficient were used to assess test-retest and interreader reproducibility. RESULTS: Of 42 patients, 30 had useable data. Test-retest reproducibility of fractional anisotropy was high for white matter as a whole (coefficient of variation, 3.8%; intraclass correlation coefficient, 0.93). Test-retest coefficient-of-variation ranged from 8.0%–18.2% and

Journal

American Journal of NeuroradiologyAmerican Journal of Neuroradiology

Published: Oct 1, 2017

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