Optimal repetition time for free breathing myocardial arterial spin labeling

Abstract

The aim of this study was to improve the scan efficiency of ASL in the myocardium. Free breathing FAIR-ASL scans with different TRs were compared, while keeping the acquisition time constant. Scans were named by the trigger pulse that started each acquisition: every two (TP1), four (TP2) and six (TP3) cardiac cycles. TP2 offered the best alternative with a coefficient of variation of 17.15% intrasession and 36.85% intersession. Mean MBF increased by 0.22 ± 0.41 ml/g/min with mild stress.

CITATION  NMR Biomed . 2019 May;32(5):e4077.
doi: 10.1002/nbm.4077. Epub 2019 Feb 27