Abstract #1478

Free-Breathing T2-Weighted Abdominal Examination Using Radial 3D Fast Spin-Echo Imaging

Thomas Benkert^1,2, John P Mugler III³, Bjorn Stemkens^2,4,5, Daniel K Sodickson^1,2, Hersh Chandarana^1,2, and Kai Tobias Block^1,2

¹Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University School of Medicine, New York, NY, United States, ²Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, New York University School of Medicine, New York, NY, United States, ³Department of Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, United States, ⁴Department of Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands, ⁵Center of Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University School of Medicine, New York, NY, United States

A 3D fast spin-echo (FSE) sequence design for free-breathing T₂-weighted abdominal examination is described. Due to use of radial stack-of-stars sampling, the sequence provides pure T₂ contrast and achieves high robustness to motion, enabling that patients can be scanned during shallow breathing. Using an integrated FID navigator, the sequence can additionally be combined with the self-navigated XD-GRASP reconstruction principle for patients who perform deep breathing. Furthermore, the navigator can be used for bulk-motion detection. Initial results in a free-breathing adult volunteer are shown.

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