Motion models
MRISIMUL utilizes three different motion models: respiratory motion, heart motion and blood flow. For simulating heart motion, a mathematical model of myocardial deformation was applied on a cylinder and spatial modulation of magnetization (1-1 SPAMM)* was introduced upon detection of the R-wave in a CINE pulse sequence with 100 phases and 1 vps (views per segment). The result of this simulation is shown in the following video:
*SPAMM RF pulses: 45 degrees, three-lobe sinc pulse, 3msec duration
FOV: 360mm x 270mm
kspace: 256 x 256