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Abstract #4879

Improving Spatial Resolution of Brain and Renal ASL MR Images using 3D Cartesian TSE and Compressed SENSE Reconstruction

Yiming Wang1, Limin Zhou1, Marco C. Pinho1,2, Ivan Pedrosa1,2,3, Joseph A. Maldjian1,2, and Ananth J. Madhuranthakam1,2
1Department of Radiology, UT Southwestern Medical Center, Dallas, TX, United States, 2Advanced Imaging Research Center, UT Southwestern Medical Center, Dallas, TX, United States, 3Department of Urology, UT Southwestern Medical Center, Dallas, TX, United States

Synopsis

Arterial spin labeled (ASL) MRI is often acquired at reduced spatial resolution due to lower signal to noise (SNR), although higher spatial resolution within clinically feasible scan times is desired. In this study, we applied Compressed Sensing–Sensitivity Encoding (CS-SENSE) to 3D Cartesian TSE with Variable Density (VD) sampling to achieve higher spatial resolution ASL-MRI without prolonging acquisition time. Perfusion images acquired with CS-SENSE showed good SNR and image quality in both brains and kidneys, without introducing bias to perfusion quantification. This may be particularly useful to measure perfusion changes in small-sized lesions in both brains and kidneys.

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Keywords