Hui Xue1, Yu Ding2, Ti-Chiun Chang1, Christoph Guetter1, Subha V. Raman2, Marie-Pierre Jolly1, Orlando P. Simonetti2
1Siemens Corporate Research, Princeton, NJ, United States; 2Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH, United States
To improve the image quality of real-time exercise stress cardiac cine and perfusion imaging, we extended the recently proposed SPIRIT image reconstruction by incorporating temporal coil sensitivity estimation on GRAPPA reconstructed kspace and spatial regularization. The proposed method was applied to 17 volunteers for cine imaging with an averaged SNR gain of 28.5% and 10 volunteers for perfusion with a 19.7% SNR gain. The level of ghosting artifacts was statistically unchanged while the SNR increase was significant.