Abstract #0876
PETRA qMRA: Towards Zero-Flow Dephasing Intracranial Non-Contrast MR Angiography
Yutaka Natsuaki 1 , Xiaoming Bi 1 , David M Grodzki 2 , Aurelien F Stalder 2 , and Gerhard Laub 1
1
Siemens Healthcare, Los Angeles, CA, United
States,
2
Siemens
Healthcare, Erlangen, Germany
Despite being accepted as a current clinical gold
standard for the intracranial non-contrast MR
Angiography (MRA), 3D Time of Flight (3D TOF) sequence
has well-known flow dephasing artifacts in lumen, in
particular in the tortuous carotid arteries. Recently
developed Zero-TE (ZTE) sequences (e.g. PETRA) and their
subtraction-based MRA applications (e.g. PETRA qMRA) can
potentially solve this problem, as they are inherently
immune to flow dephasing. Through volunteer validation
studies vs the 3D TOF (n=5), the current work
demonstrates that the optimized PETRA qMRA can generate
the one of the kind, zero-flow dephasing non-contrast
MRA.
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