G Buonincontri, C Methner, T Krieg, TA Carpenter, SJ Sawiak
J Magn Reson Imaging
PURPOSE: To demonstrate and validate a late gadolinium enhancement (LGE) imaging protocol, optimized for tissue viability assessment in interventional mouse models of myocardial infarction. MATERIALS AND METHODS: The method uses an efficient sampling scheme using multiple slices in a single heartbeat interleaving slice packages between alternate TRs. Sampling multiple slices instead of multiple echoes or multiple k-lines achieves higher SNR efficiency, and images covering the whole heart can be obtained in 3 min. Saturation effects are exploited for an optimum compromise between contrast and speed. RESULTS: The images obtained show high hyperenhancement with good contrast-to-noise. It is shown that inversion time optimization can be reliably omitted with this scheme, and that measured infarct sizes correlate well with histological measures. CONCLUSION: Our protocol offers a new efficient tool for the measurement of infarct size in mouse models of heart disease.