Abstract #0643

Imaging Conditions and Image Quality for Patients with MR-conditional Implantable Medical Devices: Normal Volunteer Study

Kagayaki Kuroda¹, Saeko Sunohara¹, Satoshi Yatsushiro², Toshiki Saito³, Nao Kajiwara³, Tomohiko Horie³, Toshiki Kazama³, Tetsu Niwa³, and Yutaka Imai³

¹Course of Electric and Electronic Engineering, Graduate School of Engineering, Tokai University, Hiratsuka, Japan, ²Graduate School of Science and Technology, Tokai University, Hiratsuka, Japan, ³Department of Radiology, School of Medicine, Tokai University, Isehara, Japan

Actual SAR values measured by calorimetry varied for a factor of 2.3 among three different scanners (two 1.5T and one 3T) even at identical console SAR settings. Console B1+RMS values also deviate for a factor of 1.2 between the two 1.5T. Image quality assessment performed by three radiologists suggested that the image quality change due to the console SAR setting was not critical at a 1.5-T scanner, but was so at a 3-T scanner. Therefore attention should be paid to the variation of the actual SAR even if the console SAR is at a condition specified for an implantable medical device.

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