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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