Free-Breathing 3D Isotropic Whole Chest Non-Contrast MRA Using a Combination of Compressed Sensing, Parallel Imaging and a 3D Radial Phyllotaxis Trajectory: a Feasibility Study
Jian Xu 1,2 , Li Feng 3 , Ruth P. Lim 4 , Davide Piccini 5,6 , Ricardo Otazo 3 , Gabriele Bonanno 5 , Yi Wang 7 , Edward K. Wong 1 , and Daniel K. Sodickson 3
Department of Computer Science and
Engineering, Polytechnic Insitute of New York
University, Brooklyn, NY, United States,
HealthCare USA, NY, United States,
of Radiology, New York University School of Medicine,
NY, United States,
of Radiology, Austin Health, Victoria, Australia,
of Radiology, University Hospital (CHUV) and University
of Lausanne (UNIL) / Center for Biomedical Imaging
(CIBM), Lausanne, Switzerland,
Clinical Imaging Technology, Siemens Healthcare IM BM
PI, Lausanne, Switzerland,
DeMatteis Center, St. Francis Hospital, Roslyn, NY,
This work demonstrates the feasibility of 3D isotropic
whole chest non-contrast MRA in approximately 2 minutes
using a joint multicoil compressed sensing
reconstruction with a 3D radial phyllotaxis trajectory.
Respiratory motion correction was implemented in k-space
before image reconstruction to achieve 100% acquisition
efficiency. The proposed approach offers potential
applications for morphologic evaluation of the heart and
thoracic vessels in clinically acceptable scan times.
The high isotropic spatial resolution further enables
simplified data acquisition and offline evaluation of
the vessels in different planes with arbitrary image
reformation. The method has additional potential
applications in the diagnosis of congenital heart
disease or aortopathy.
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