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Background Three-dimensional acquisition methods facilitated by undersampling in space and/or time have been proposed to overcome the limited cardiac coverage of dynamic first pass myocardial perfusion-CMR. Recently, temporally constrained k-t BLAST reconstruction using principal component analysis (k-t PCA) has been proposed to further improve temporal resolution of k-t undersampled data. In addition, multi-transmit technology has become available, which aims to improve image uniformity and SAR limitations at higher field strength. We have developed a pulse sequence for 3D perfusion-CMR that utilises both k-t PCA and multi-transmit technology at 3 Tesla.

3D myocardial perfusion-CMR using a multi-transmit coil and k-t PCA reconstruction to detect flow limiting coronary stenosis