Abstract #2508
Highly accelerated non-contrast-enhanced MR angiography of the renal arteries featuring sparse, incoherent sampling and L1-regularized iterative SENSE
Michaela Schmidt 1 , Stefan Haneder 2 , Ulrike I. Attenberger 2 , Melissa M. Ong 2 , Mariappan Nadar 3 , Peter Schmitt 1 , Xiaoming Bi 4 , Stefan O. Schoenberg 2 , and Michael O. Zenge 1
1
Siemens AG Healthcare Sector, Erlangen,
Germany,
2
University
Medical Centre Mannheim, Institute of Clinical Radiology
and Nuclear Medicine, Germany,
3
Siemens
Corporate Technology, Princeton, NJ, United States,
4
Siemens
Healthcare, LA, CA, United States
Inversion-prepared b-SSFP imaging is a suitable approach
to perform non-contrast-enhanced (non-CE) MR angiography
(MRA) of the renal arteries. The current study aims at a
radical acceleration of the data acquisition by
combining sparse, incoherent sampling with
L1-regularized iterative SENSE reconstruction. Non-CE
MRA was performed in 20 healthy volunteers with
sub-sampling rates of 6.4, 9.0 and 11.5 and compared to
a reference protocol with rate 2 GRAPPA acceleration. In
comparison to the reference protocol, the proposed
highly accelerated imaging method performed very
competitively with acceleration rates up to 9 with
radical data acquisition time reductions up to a factor
of 5.
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