Shivraman Giri1, Saurabh Shah2,
Hui Xue3, Jens Guehring3, Sven Zuehlsdorff2,
Yiu-Cho Chung2, Subha V. Raman1,
1The Ohio State University, Columbus, OH, United States; 2Siemens Healthcare, Chicago, IL, United States; 3Siemens Corporate Research, Princeton, NJ, United States
In this work, we propose a myocardial T2 mapping sequence with two motion-compensation schemes: respiratory navigator and non-rigid registration. Their combined application provides complementary motion-compensation, with navigator providing reproducible positioning of the heart in all directions, and registration correcting for any residual in-plane motion. Results show a significant reduction in motion-induced T2 variability in myocardial T2 maps. The proposed sequence permits reliable T2 mapping without subject breath-hold and may enable 3D T2 maps of the myocardium in future.