Eiko Yamabe1,
Ryo Miyagi2, Toshinori Sakai3, Toshiyasu Nakamura4,
Hiroshi Yoshioka1
1Department
of Radiological Sciences, University of California Irvine, Orange, CA, United
States; 2Department of Orthopaedic Surgery, Miyoshi City National
Insurance Nishi-Iya Clinic, Tokushima, Japan; 3Department of
Orthopedics, Institute of Health Biosciences, The University of Tokushima
Graduate School, Tokushima, Japan; 4Department of Orthopaedic
Surgery, Keio University School of Medicine, Tokyo, Japan
We qualitatively visualized the median nerve with diffusion tensor imaging in various acquisition positions/parameters and quantitatively investigated changes in diffusion values (FA, ADC) of the median nerve at different locations of the carpal tunnel in healthy volunteers. The median nerve at the carpal tunnel including a small nerve fiber such as a motor branch was well appreciated on fiber tracking images. Comparable fiber tracking images and FA/ADC values were obtained in supine and prone positions without any statistical differences. These results show a potential for their clinical use.