磁共振3D TOF-MRA和ZTE-MRA在脑血管成像的对比-《中国医学物理学杂志》

文章信息/Info

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

作者:: 宋宇1; 晁迎九2; 徐运军1; 1.安徽医科大学附属省立医院影像科，安徽合肥 230001； 2.中国科学技术大学附属第一医院神经外科，安徽合肥 230036

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

摘要:: 目的：比较3D TOF-MRA和ZTE-MRA技术在脑血管的成像质量。方法：收集安徽医科大学附属省立医院2019年3月~2020年1月在放射科行脑血管3D TOF-MRA及ZTE-MRA的31例病人的影像资料，进行血管可视化及饱和伪影的质量评分，采用Kappa检验评估两名阅片者评分的一致性，并使用Wilcoxon符号秩检验对两种MRA成像的质量评分进行比较。测量并计算图像的信噪比、对比噪声比和对比度，采用配对样本t检验评估各项客观评价指标。结果：两名阅片者的质量评分结果具有较强的一致性（Kappa>0.6）；ZTE-MRA成像血管可视化的评分与3D TOF-MRA无显著差异（P>0.05），在饱和伪影方面ZTE-MRA成像有显著优势（P<0.05）；除在动脉瘤介入术后栓塞段成像的信噪比，ZTE-MRA成像客观评估的各项指标均高于3D TOF-MRA成像（P<0.05）。结论：ZTE-MRA与传统3D TOF-MRA成像技术相比，脑血管的成像质量明显提高。

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.