Abstract

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Title:: Comparison between 3D TOF-MRA and ZTE-MRA in the imaging of cerebral vessels

Author(s):: SONG Yu1; CHAO Yingjiu2; XU Yunjun1; 1. Department of Imaging, The Affiliated Provincial Hospital of Anhui Medical University, Hefei 230001, China 2. Department of Neurosurgery, the First Affiliated Hospital of University of Science and Technology of China, Hefei 230036, China

Keywords:: magnetic resonance angiography 3D TOF-MRA ZTE-MRA cerebral vessels imaging quality

Abstract:: Objective To compare the imaging quality of 3D TOF-MRA and ZTE-MRA for cerebral vessels. Methods The imaging data from 31 patients who accepted cerebrovascular 3DTOF-MRA and ZTE-MRA in the radiology department of the Affiliated Provincial Hospital of Anhui Medical University from March 2019 to January 2020 were collected to evaluate the imaging quality of vessel visualization and saturation artifacts. Kappa test was used to evaluate the consistency of the two image readers, and Wilcoxon signed-rank test was used to compare the quality scores of the two kinds of MRA. Signal to noise ratio, contrast to noise ratio and contrast ratio of images were measured and calculated. Matched samples t-test was used to evaluate the objective evaluation indexes. Results The quality scores from the two readers have a strong consistency, with Kappa>0.6. There was no statistically significant difference in vessel visualization scores between ZTE-MRA and 3D TOF-MRA (P>0.05), and ZTE-MRA has significant advantages in saturation artifacts (P<0.05). Except for the SNR of the imaging of embolization segment after aneurysm intervention, all the objective evaluation indexes of ZTE-MRA were significantly better than those of 3D TOF-MRA(P<0.05). Conclusion Compared with traditional 3D TOF-MRA, ZTE-MRA showed significant advantages in the quality of cerebrovascular imaging.