Shivraman Giri1, Hui Xue2, Abdul Wattar1, Yu Ding1, Randall Kroeker3, Gerhard Laub4, Peter Kellman5, Sven Zuehlsdorff6, Subha V. Raman1, Orlando P. Simonett
1The Ohio State University, Columbus, OH, United States; 2Siemens Corporate Research, Princeton, NJ, United States; 3Siemens Healthcare, Winnipeg, Manitoba, Canada; 4Siemens Healthcare, San Francisco, CA, United States; 5National Institutes of Health, Bethesda, MD, United States; 6Siemens Healthcare, Chicago, Il, United States
We present a new approach to 3D myocardial first-pass perfusion imaging. The technique uses EKG-gated SSFP sequence such that data is acquired only during mid-diastole, whereas the magnetization is maintained in steady-state at other times. TWIST acquisition scheme is combined with GRAPPA to achieve the desired acceleration; the dynamic 3D frames were then motion-corrected using 3D non-rigid registration. Finally, pixel-wise contrast enhancement ratio (CER) images were generated to improve visualization.