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Abstract #3606

Accelerating TOF MRA in Clinical Practice using Sparse MRI with Variable Poisson Density Sampling

Aurelien F Stalder 1 , Yutaka Natsuaki 2 , Michaela Schmidt 1 , Xiaoming Bi 2 , Michael O Zenge 3 , Mariappan Nadar 4 , Peter Speier 1 , Peter Schmitt 1 , and Gerhard Laub 2

1 Siemens Healthcare, Erlangen, Germany, 2 Siemens Healthcare, CA, United States, 3 Siemens Healthcare, NY, United States, 4 Siemens Corporate Technology, NJ, United States

According to the sparse MRI theory, improved incoherence should allow better performance with iterative reconstruction techniques. In this work, we implemented a sparse TOF MRA technique using a variable Poisson density sampling scheme on a standard clinical scanner. Thanks to the improved incoherence of the sampling pattern, it was possible to acquire high-quality and artifact-free images in volunteers and patients in 45% shorter scan times compared to conventional TOF imaging with parallel imaging. This work demonstrates the feasibility of sparse TOF MRA with high and isotropic resolution on a standard clinical scanner in just 3:15 min.

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