Abstract #0427
Isotropic Cardiac MR Functional Imaging with 3D Variable Density Spiral and Non-Cartesian Through-time GRAPPA
Kestutis J. Barkauskas 1 , Jesse I. Hamilton 1 , Yong Chen 1 , Dan Ma 1 , Katherine L. Wright 1 , Wei-Ching Lo 1 , Prabhakar Rajiah 2 , Vikas Gulani 2 , Mark A. Griswold 2 , and Nicole Seiberlich 1
1
Biomedical Engineering, Case Western Reserve
University, Cleveland, OH, United States,
2
Radiology,
University Hospitals, Cleveland, OH, United States
The feasibility of volumetric coverage of the left
ventricle within a single breathhold at isotropic
reconstructed resolution for cardiac MR functional
imaging was explored. The 3D Stack-of-Spirals trajectory
and 3D through-time non-Cartesian GRAPPA reconstruction
were combined to yield volumetric cine scans with
spatial resolution of 2.47mm
3
and
temporal resolution of 32ms. Total 3D scan time was
nearly 4-fold shorter than when acquiring the clinical
standard 2D short-axis functional scan. These 4D images
could be reformatted to arbitrary imaging planes without
prior image registration, demonstrating the potential
assessment of valve patency or the entire length of the
papillary muscle anatomy.
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