Abstract #0937
Feasibility of Free-Breathing Whole Heart Coronary MRA in Less Than 3 Minutes Using Combination of Compressed Sensing, Parallel Imaging and A 3D Radial Phyllotaxis Trajectory
Jian Xu 1,2 , Li Feng 3 , Davide Piccini 4,5 , Ricardo Otazo 3 , Gabriele Bonanno 5 , Florian Knoll 3 , Edward K. Wong 1 , and Daniel K. Sodickson 3
1
Department of Computer Science and
Engineering, Polytechnic Insitute of New York
University, Brooklyn, NY, United States,
2
Siemens
Healthcare USA, New York, NY, United States,
3
Bernard
and Irene Schwartz Center for Biomedical Imaging,
Department of Radiology, New York University School of
Medicine, New York, NY, United States,
4
Advanced
Clinical Imaging Technology, Siemens Healthcare IM BM
PI, Lausanne, Switzerland,
5
Department
of Radiology, University Hospital (CHUV) and University
of Lausanne (UNIL) / Center for Biomedical Imaging
(CIBM), Lausanne, Switzerland
The feasibility of rapid free-breathing coronary MRA
with isotropic spatial resolution was demonstrated at
different acceleration rates using a joint multicoil
compressed sensing reconstruction (Sparse-SENSE) with a
3D radial phyllotaxis trajectory. Respiratory motion
correction was implemented in radial k-space before
reconstruction to achieve 100% acquisition efficiency.
Results with adequate image quality can be achieved by
using data acquired in only 144 heartbeats, which
corresponds to a total acquisition time of approximately
2 minutes. The proposed method can be a potentially
useful tool for free-breathing coronary MRA in
clinically acceptable scan times.
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