Abstract #4266

Motion-Robust Abdominal DCE-MRI Using Respiratory-Gated Golden-Angle Radial Sparse Parallel MRI

Robert Grimm¹, Dominik Nickel¹, Qiu Wang², Boris Mailhe², Berthold Kiefer¹, Kai Tobias Block³, and Tobias Heye⁴

¹Siemens Healthcare GmbH, Erlangen, Germany, ²Medical Imaging Technologies, Siemens Healthcare, Princeton, NJ, United States, ³Radiology, New York University School of Medicine, New York City, NY, United States, ⁴Klinik für Radiologie und Nuklearmedizin, Universitätsspital Basel, Basel, Switzerland

Although the radial sampling scheme of GRASP DCE-MRI leads to inherent motion robustness, strong respiration can still impair the image quality of free-breathing abdominal examinations. We propose to combine GRASP with respiratory gating to minimize motion artifacts within and between temporal frames, without prolonging the reconstruction time and maintaining a high spatio-temporal resolution. A validation in 10 clinical patients confirmed the improved sharpness of the gated reconstruction.

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