Abstract #2376

Tracking Abdominal Organ Motion in Real-time T2-weighted MRI with 2 Simultaneously Acquired Orthogonal Slices

Samantha Hickey¹, Andreas Reichert¹, Lars Bielak^1,2, Wolfgang Ptacek³, Thomas Bortfeld⁴, and Michael Bock¹

¹Division of Medical Physics, Dept. of Diagnostic and Interventional Radiology, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, ²German Cancer Consortium (DKTK), Partner Site Freiburg, Freiburg, Germany, ³ACMIT Gmbh, Wiener Neustadt, Austria, ⁴Division of Radiation Biophysics, Department of Radiation Oncology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States

Synopsis

Keywords: Pulse Sequence Design, Radiotherapy, Interventional, T2-weighted

Radiotherapy, cryoablation, and percutaneous needle biopsy procedures profit from MR-guidance with real-time lesion tracking. T2-weighted images often provide superior lesion contrast, but the temporal resolution of conventional T2-weighted sequences is insufficient for real-time MRI. Here, we present a fast, T2-weighted sequence Ortho-SSFP-Echo, which simultaneously acquires two orthogonal images, to track breathing induced kidney motion.

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