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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 f├╝r Radiologie und Nuklearmedizin, Universit├Ątsspital 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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