Shigehide Kuhara1, Tomohisa Okada2, Ayako Ninomiya1, Toshikazu Kamae2, Shotaro Kanao2, Tetsuo Sato3, Kotaro Minato3, Kaori Togashi2
1MRI Systems Division, Toshiba Medical Systems, Otawara-Shi, Tochigi, Japan; 2Department of Diagnostic Radiology, Kyoto University Hospital, Kyoto, Japan; 3Nara Institute of Science and Technology, Nara, Japan
We have developed the Motion Pre-Analysis Method to determine the appropriate RMC coefficient before WH MRCA (Whole Heart Magnetic Resonance Coronary Angiography) examinations and investigated coefficients between motions of the diaphragm and the heart at different breathing levels by using an inflatable blood pressure cuff placed under an abdominal band. The results of this study suggest that the RMC coefficient may change for each person and abdominal pressures applied. The image quality was slightly improved by using the pre-analyzed RMC coefficient. It is therefore expected that this Motion Pre-Analysis Method would improve visualization of WH MRCA examinations.