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.