Image Quality Evaluation of Real-Time Cardiac Images Reconstructed using Linear and Golden Angle Through-Time Radial GRAPPA
Jesse I. Hamilton 1 , Prabhakar Rajiah 2 , Kestutis J. Barkauskas 1 , Katherine L. Wright 1 , Yun Jiang 1 , Vikas Gulani 2 , and Nicole Seiberlich 1
Biomedical Engineering, Case Western Reserve
University, Cleveland, OH, United States,
University Hospitals, Cleveland, OH, United States
Previous research has combined through-time radial
GRAPPA with the golden angle trajectory to allow
post-acquisition selection of the acceleration factor.
In this work, a radiologist comparison of linear, golden
angle, and self-calibrated golden angle radial GRAPPA
was performed for real-time cardiac imaging. Golden
angle radial GRAPPA received similar ratings in motion
and anatomical visibility as linear radial GRAPPA up to
R=8, despite slightly increased artifacts. No
significant differences in scores were found between the
two golden angle techniques. A preliminary radiologist
review suggests that golden angle through-time radial
GRAPPA may be preferable when the optimal temporal
resolution is unknown a priori.
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