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Abstract #1420

Indirect Echo Corrected Fast T2 Mapping of the Heart from Highly Undersampled Radial FSE Data Using the CURLIE Reconstruction

Tomoe Barr1, Chuan Huang2, 3, Ali Bilgin4, 5, Aiden Abidov, 36, Maria I. Altbach3

1Biomedical Engineering, The University of Arizona, Tucson, AZ , United States; 2Center for Advanced Radiological Sciences, Massachusetts General Hospital, Boston, MA, United States; 3Medical Imaging, The University of Arizona, Tucson, AZ, United States; 4Biomedical Engineering, University of Arizona, Tucson, AZ, United States; 5Electrical and Computer Engineering, The University of Arizona, Tucson, AZ, United States; 6Medicine, The University of Arizona, Tucson, AZ, United States

In cardiac MR T2-weighted imaging or T2 mapping can be used for the evaluation of pathologies such as inflammation. Fast spin echo (FSE) methods allow for fast T2 mapping without compromising spatial or temporal resolution. A drawback of using an FSE acquisition is that indirect echoes (eg. stimulated echoes) affect T2 estimation. In this work we present a double inversion radial FSE (DIR-RADFSE) technique combined with a novel model-based reconstruction algorithm (CURLIE) for T2 mapping of the heart with compensation for indirect echoes. The method allows for T2 mapping from undersampled radial FSE data (data acquired in a breath hold) without T2 biases due to indirect echoes.

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