Fig 1. Diagram of the proposed 3D self-gating CMR method for detecting MI in mouse.

(a) The stack-of-stars sampling scheme comprises Cartesian encoding along k_z direction and radial projections filling in k_x-k_y plane. All partition encodes for a given projection angle are collected sequentially before switching to the next projection angle. This partition-first sampling scheme enables the projection centers (denoted as black solid circles) to be used as self-gating data for extracting cardiac and respiratory motion signals; (b) Corresponding 3D GRE sequence with stack-of-stars sampling trajectories.