Prospective ECG-gated mouse cardiac imaging with a 34-MHz annular array transducer.

ABSTRACT: Prospective imaging with electrocardiogram (ECG) and respiratory gating presents an imaging application that leverages the improved image quality of high-frequency (>20 MHz) annular arrays without the need for rapid mechanical motion. The limitation of prospective imaging is that the object being imaged must have a periodically stable motion. The present study investigated the implementation of prospective imaging with a 34 MHz annular-array scan system to image the mouse heart at high effective frame rates, >200 frames/s (fps). M-mode data for all transmit-to-receive pairs were acquired at a series of spatial locations using ECG and respiratory gating, and the data were then synthetically focused in postprocessing. The pulse-repetition frequency of the M-mode data determined the effective

SUBMITTER: Ketterling JA 

PROVIDER: S-EPMC2752351 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature