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Abstract #0908

Compressed Sensing PETRA MRI

Serhat Ilbey1, Johannes Fischer1, Michael Bock1, and Ali Caglar Ozen1,2
1Dept. of Radiology, Medical Physics, Medical Center University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany, 2German Consortium for Translational Cancer Research Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany

PETRA is a combination of a radial zero-TE and single point imaging (SPI) acquisition, which is very silent and which can efficiently acquire MR signals with short T2*. In PETRA, the acquisition of SPI data constitutes a major part of the acquisition time especially for high-resolution protocols. To accelerate the SPI section while preserving the image quality, we combine SPI with compressed sensing (cs). csPETRA enables 3D imaging with isotropic sub-millimeter resolution within only a few minutes, e.g., for (0.5 mm)3 voxel-size with (20 cm)3 field-of-view, which is demonstrated with different acceleration factors for high-resolution imaging of the knee.

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