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©The Author(s) 2015. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Radiol. Sep 28, 2015; 7(9): 279-285
Published online Sep 28, 2015. doi: 10.4329/wjr.v7.i9.279
Published online Sep 28, 2015. doi: 10.4329/wjr.v7.i9.279
Inter- and intra-rater reliability of diffusion tensor imaging parameters in the normal pediatric spinal cord
Nadia Barakat, Pallav Shah, Scott H Faro, Devon Middleton, Feroze B Mohamed, Department of Radiology, Temple University, Philadelphia, PA 19140, United States
Nadia Barakat, John P Gaughan, Biostatistics Consulting Center, Temple University School of Medicine, Philadelphia, PA 19140, United States
MJ Mulcahey, Thomas Jefferson University School of Health Professions, Philadelphia, PA 19107, United States
Author contributions: All the authors solely contributed to this paper.
Supported by The Shriners Hospitals for Children, No. #8956.
Institutional review board statement: Subjects and their parents provided written informed assent and consent of the IRB-approved protocol.
Informed consent statement: Subjects and their parents provided written informed assent and consent of the IRB-approved protocol.
Conflict-of-interest statement: All the authors participated in this work do not have any conflict of interest.
Data sharing statement: All the authors participated in this work do not have any data sharing.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: Nadia Barakat, PhD, Department of Radiology, Temple University, 3401 N. Broad St., Philadelphia, PA 19140, United States. nadia.barakat@temple.edu
Telephone: +1-215-7079047
Received: February 11, 2015
Peer-review started: February 11, 2015
First decision: March 6, 2015
Revised: June 24, 2015
Accepted: July 29, 2015
Article in press: August 3, 2015
Published online: September 28, 2015
Peer-review started: February 11, 2015
First decision: March 6, 2015
Revised: June 24, 2015
Accepted: July 29, 2015
Article in press: August 3, 2015
Published online: September 28, 2015
Core Tip
Core tip: We tested the reliability of spinal cord diffusion tensor imaging (DTI) by assessing inter- and intra-rater agreement between two region of interest (ROI) selection methods. Results showed moderate to strong agreement between repeated measurements. There was a variation in DTI parameters at lower and upper spinal cord levels and significant differences between raters in the number of pixels they chose to outline ROIs. There were no significant differences in DTI parameter values derived from these ROIs. The study showed that strong reproducibility in spinal cord DTI can be achieved, and highlighted the importance of setting detailed methodology to standardize ROI drawing techniques.