Abstract #3283

Impact of temporal resolution on quantitative renal perfusion MRI: Assessment using a single contrast injection and a continuous golden-angle radial sampling technique with iterative reconstruction.

Johannes Budjan¹, Philipp Riffel², Melissa M Ong², Robert Grimm³, Kai Tobias Block⁴, Frank G Zöllner⁵, Stefan O Schoenberg², Ulrike I Attenberger², and Daniel Hausmann²

¹Department of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Medical Faculty Mannheim, Mannheim, Germany, ²Department of Clinical Radiology and Nuclear Medicine, University Medical Center Mannheim, Medical Faculty Mannheim, Heidelberg University, ³Siemens Healthcare GmbH, Erlangen, Germany, ⁴Center for Advanced Imaging Innovation and Research (CAI2R), Department of Radiology, New York University School of Medicine, New York, NY, United States, ⁵Computer Assisted Clinical Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

To evaluate the impact of temporal resolution on quantitative renal perfusion MRI, an intra-individual comparison of retrospectively reconstructed datasets with 4 different temporal resolutions (1.5s to 10.1s) was performed in 22 patients. This was achieved using a continuously acquired sequence that uses a combination of radial sampling, sparse imaging, iterative reconstruction, parallel imaging, and a single contrast injection. No statistically significant differences in renal plasma flow were found between the groups. This suggests that the effect of temporal resolution plays a subordinated role in quantitative renal perfusion MRI.

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