Abstract #0517
Comparison of digital subtraction angiography with 3D high-resolution MR vessel wall imaging for the evaluation of basilar artery atherosclerotic stenosis and plaque distribution
Aofei Liu 1 , Xihai Zhao 2 , Huijun Chen 2 , Zhensen Chen 2 , William Kerwin 3 , Chun Yuan 2,3 , Bin Du 1 , and Wei-Jian Jiang 1
1
New Era Stroke Care and Research Institute,
The Second Artillery General Hospital PLA, Beijing,
China,
2
Center
for Biomedical Imaging Research & Department of
Biomedical Engineering, Tsinghua University, Beijing,
China,
3
Department
of Radiology, University of Washington, Seattle, WA,
United States
We sought to compare DSA and MR vessel wall imaging in
evaluating the degree of stenosis and plaque
distribution in BA. Of 31 subjects, the stenotic degree
measured by DSA and MRI was 32.9% and 42.9%
respectively. Excellent agreement was found between DSA
and MRI in stenosis measurement (r=0.898, P<0.001). DSA
underestimated the degree of luminal stenosis, which may
be due to its limitation in viewing eccentrically
stenotic lesion. The incidence of plaque affecting each
quadrant on MRI is greater than that of DSA, suggesting
MR vessel wall imaging may be a better imaging modality
to evaluate lesion distribution in BA.
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