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.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.