Image quality characterization in Time-Resolved 3D CE-MRA
Yijing Wu 1 , Kevin M Johnson 1 , Jane H Maksimovic 2 , Charles A Mistretta 1 , and Patrick A Turski 2
Medical Physics, University of Wisconsin,
Madison, WI, United States,
University of Wisconsin, Madison, WI, United States
Time-resolved 3D contrast-enhanced MR angiography (CE-MRA)
often requires highly accelerated imaging to achieve
clinically desired temporal and spatial resolutions.
Recently developed non-linear reconstruction schemes,
e.g. compressed sensing (CS) and HYPR, offer
substantially greater acceleration than past methods but
are unfortunately inherently object dependent and
difficult to characterize with traditional linear
methods. Subsequently, exemplary results in simplified
digital phantoms do not translate clinically. In this
work, we investigate the use of a highly realistic
fractal based digital imaging phantom for accurate
characterization of several non-linear reconstructions
(CS, HYPR, and CS-HYPR).
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