SNR-optimized myocardial perfusion imaging using parallel acquisition for effective density-weighted saturation recovery imaging

作者：Gutberlet Marcel^*; Geier Oliver; Staeb Daniel; Ritter Christian; Beer Meinrad; Hahn Dietbert; Koestler Herbert

来源：Magnetic Resonance Imaging, 2010, 28(3): 341-350.

DOI：10.1016/j.mri.2009.11.007

• First-pass myocardial perfusion imaging
• Density-weighted imaging
• Parallel imaging
• Spatial response function
• Signal-to-noise ratio

The concept of density-weighted imaging and parallel acquisition for effective density-weighted (PLANED) imaging was transferred to saturation recovery (SR) sequences, in order to increase the SNR in first-pass myocardial perfusion imaging. Filtering in combination with density-weighted imaging allows SNR-optimized data weighting and the free choice of the corresponding spatial response SRF) simultaneously. This method was evaluated in simulations and applied successfully to phantom and in vivo first-pass myocardial perfusion studies. Unfiltered, Cartesian sampled images were compared to images acquired with SR-PLANED, which has been adjusted to result in an identical SRF as the Cartesian imaging. SNR-optimized SR-PLANED imaging improved the SNR up to 15% without changing acquisition time, the SRF or the field of view (FOV). The presented method provides high image quality and optimized SNR for first-pass myocardial perfusion imaging.

• 出版日期2010-4