Florencio Rusty Baldomaro Punzalan1, Tetsuo Sato1, Tomohisa Okada2, Shigehide Kuhara3, Kaori Togashi2, Kotaro Minato1
1Graduate School of Information
Science, Nara Institute of Science and Technology, Ikoma, Nara, Japan; 2Department
of Diagnostic Radiology, Kyoto University Hospital, Kyoto, Japan; 3MRI
Respiratory motion compensation for cardiac imaging requires a patient-specific knowledge of the hearts motion. In this study, the respiratory-induced motion of the upper and lower part of the heart was investigated during free-breathing. We observed significant inter-subject variation of upper and lower heart motion tracking factors. The tracking factor for the lower part is larger than the upper part for all subjects. This will help motion models account for the different displacements and velocities of coronary vessels located in the atrio-ventricular groove (RCA and LCX) and the apex (LAD) which are located in the lower and upper heart, respectively.