Abstract #2433
Clinical Feasibility of Accelerated TOF MR Angiography with Sparse Undersampling and Iterative Reconstruction: Comparison with Conventional Parallel Imaging
Takayuki YAMAMOTO 1 , Koji FUJIMOTO 1 , Tomohisa OKADA 1 , Yasutaka FUSHIMI 1 , Akira YAMAMOTO 1 , Aurelien F. STALDER 2 , Yutaka NATSUAKI 3 , Michaela SCHMIDT 2 , and Kaori TOGASHI 1
1
Diagnostic Imaging and Nuclear Medicine,
Graduate School of Medicine, Kyoto University, Kyoto,
Kyoto, Japan,
2
Siemens
Healthcare, Erlangen, Germany,
3
Siemens
Medical Solutions USA, Inc, Pennsylvania, United States
Due to the relatively lower CNR, application of sparse
MRI techniques to non-contrast enhanced Time-of-Flight
(TOF) MRA of the brain is still challenging and hence
previous reports are limited. In this study, the sparse
MRI technique to TOF-MRA (sparse TOF) and conventional
parallel imaging (GRAPPA) was performed for 9 healthy
volunteers at 3.0T MRI scanner. Two radiologists made a
subjective assessment of overall impression and the
visualization of distal segments of the arteries. The
result indicates that sparse TOF-MRA achieved higher
acceleration while maintaining visual quality and can
thus be used in a clinical setting.
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