Abstract #1161

Highly Accelerated Prospectively Gated Free Breathing Dynamic Abdominal Imaging with Cartesian Sampling

Janio Szklaruk¹, Priya Bhosale¹, Kang Wang², Ty Cashen², Jingfei Ma³, and Ersin Bayram⁴

¹Diagnostic Radiology, University of Texas MD Anderson Cancer Center, Houston, TX, United States, ²Global MR Applications & Workflow, GE Healthcare, Madison, WI, United States, ³Department of Imaging Physics, University of Texas MD Anderson Cancer Center, Houston, TX, United States, ⁴Global MR Applications & Workflow, GE Healthcare, Houston, TX, United States

Dynamic abdominal imaging has the requirements of high spatial-temporal resolution, large spatial coverage, and acquisition timing with the contrast injection. Golden angle radial sampling in combination with compressed sensing and parallel imaging has been reported for free breathing dynamic volumetric imaging. However, radial sampling suffers from streaking artifacts, inflexible FOV prescription, and long reconstruction time. In this study, we report a Cartesian sampling technique that combines compressed sensing, parallel imaging, temporal view sharing, and navigator for prospective gating. The potential of the technique for free breathing dynamic abdominal imaging is demonstrated in both volunteers and patients.

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