Abstract #1395

Simultaneous magnetic resonance elastography of the supraspinatus and the trapezius muscles

Daiki Ito^1,2,3, Tomokazu Numano^1,3, Koichi Takamoto⁴, Kazuyuki Mizuhara^3,5, and Hisao Nishijo⁶

¹Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Tokyo, Japan, ²Office of Radiation Technology, Keio University Hospital, Tokyo, Japan, ³Health Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Japan, ⁴Department of Judo Neurophysiotherapy, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan, ⁵Department of Mechanical Engineering, Tokyo Denki University, Tokyo, Japan, ⁶Department of System Emotional Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan

Palpation is difficult to distinguish stiffness of the supraspinatus and trapezius muscles. Magnetic resonance elastography (MRE) can measure stiffness of tissues quantitatively only if vibrations reach the tissues. We developed simultaneous MRE of the supraspinatus and trapezius muscles by adjusting the shape of a wave transducer and vibration frequency. MREs were performed using self-made wave transducer at 50-150 Hz, with a 25 Hz step. Both wave images of the supraspinatus and trapezius muscles showed clear wave propagation at 50 and 75 Hz. The results demonstrated that our techniques allow simultaneous MRE of the supraspinatus and trapezius muscles at 75 Hz.

This abstract and the presentation materials are available to members only; a login is required.

Join Here