Abstract #0217
Interleaved Variable Density Sampling for Combined Dynamic Contrast Enhanced MRI and MRA of the Liver
Mahdi Salmani Rahimi 1 , Frank R Korosec 2,3 , Kang Wang 4 , James H Holmes 4 , Utaroh Motosugi 2 , Peter Bannas 2,5 , and Scott B Reeder 1,2
1
Biomedical Engineering, University of
Wisconsin-Madison, Madison, WI, United States,
2
Radiology,
University of Wisconsin-Madison, Madison, WI, United
States,
3
Medical
Physics, University of Wisconsin-Madison, Madison, WI,
United States,
4
Global
MR Applications and Workflow, GE Heatlhcare, Madison,
WI, United States,
5
Radiology,
University Hospital Hamburg-Eppendorf, Hamburg, Germany
High spatial and temporal resolution contrast enhanced
MRI is the cornerstone of detection and characterization
of focal liver lesions. An interleaved variable density
undersampling pattern with dual-echo bipolar readouts
and data-driven parallel imaging was modified to acquire
volumetric images of the liver every four seconds.
Parallel imaging calibration lines were only acquired
once during the breath-hold. Images acquired in ten
patients with focal nodular hyperplasia showed
significant improvement in overall quality compared to
clinical DCE images. MR angiograms were also obtained
from the arterial phase of the time-resolved series, and
were found to be comparable to the dedicated
conventional MRA.
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