Prospective cardio-respiratory self-gating is demonstrated in the mouse. A gradient echo scan operating at constant TR enabled acquisition of CINE data blocks or maintenance of the NMR steady state depending on the level of a gating control signal that was evaluated within each TR. A portion of the FID during each TR was submitted to a signal processor chain for streaming into a pseudo-continuous analogue cardio-respiratory signal trace and conversion to a series of logic control signals for gating.
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