邢威,贺俊景,李婷婷,沈智威,岳修正,胡育芙,王雨菡,豆凯,张印,张刚.3.0T无对比剂MR冠状动脉造影图像质量的影响因素[J].中国医学影像技术,2023,39(6):899~904
3.0T无对比剂MR冠状动脉造影图像质量的影响因素
Impact factors of imaging quality of 3.0T MR coronary angiography without contrast agents
投稿时间:2022-12-02  修订日期:2023-03-06
DOI:10.13929/j.issn.1003-3289.2023.06.023
中文关键词:  冠状动脉疾病  磁共振血管造影术  质量控制  对比剂
英文关键词:coronary artery disease  magnetic resonance angiography  quality control  contrast media
基金项目:河南省中医药科学研究专项课题(2021JDZY023)。
作者单位E-mail
邢威 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
贺俊景 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
李婷婷 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
沈智威 飞利浦(中国)投资有限公司, 北京 100600  
岳修正 飞利浦(中国)投资有限公司, 北京 100600  
胡育芙 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
王雨菡 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
豆凯 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
张印 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000  
张刚 河南中医药大学第一附属医院磁共振科, 河南 郑州 450000 Zhanggang1968@163.com 
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中文摘要:
      目的 分析影响3.0T无对比剂MR冠状动脉造影(MRCA)图像质量的因素。方法 前瞻性对170例疑诊冠状动脉疾病患者行3.0T全心无对比剂MRCA检查,针对冠状动脉主要分支包括左前降支(LAD)、左回旋支(LCX)及右冠状动脉(RCA)进行主观评分,计算其信噪比(SNR);根据3支总得分将图像分为优、良、中或差;采用单因素分析及有序logistic回归分析筛选MRCA图像质量的影响因素。观察回归分析结果显示差异有统计学意义的参数与MRCA图像质量的相关性,并以受试者工作特征(ROC)曲线分析其评估图像质量的效能。结果 MRCA主观评分结果为优、良、中(以上可用于诊断)及差者(不可用于诊断)分别为36、46、57及31例;其间LAD、LCX及RCA的SNR总体差异具有统计学意义(P均<0.01)。患者体质量指数(BMI)(OR=0.64)、心率(OR=0.96),以及采集效率(OR=1.06)和体位(OR=0.33)均为MRCA图像质量的影响因素(P均<0.05),且均与图像质量评分相关(r=-0.604、-0.250、0.500、0.407,P均<0.001);分别以≤25.5 kg/m2、≤70次/分、≥37%及手下摆为阈值,BMI、心率、采集效率及手上举或下摆判断MRCA图像可否用于诊断的曲线下面积(AUC)为0.802、0.704、0.955及0.686。结论 患者BMI、心率,以及采集效率和体位为3.0T无对比剂MRCA图像质量的影响因素。
英文摘要:
      Objective To investigate the impact factors of imaging quality of 3.0T MR coronary angiography (MRCA) without contrast agents. Methods Whole-heart 3.0T MRCA examination without contrast agents was prospectively performed in 170 patients with suspected coronary artery disease. The subjective scoring of imaging quality was performed aimed on the main coronary artery branches, including left anterior descending (LAD), left circumflex (LCX) and right coronary artery (RCA), and the signal-to-noise ratios (SNR) were calculated. The imaging quality of MRCA was classified as excellent, good, medium (capable to be used for diagnosis) or bad (not capable to be used for diagnosis) according to the total subjective scores of the above 3 branches. Univariate analysis and ordinal logistic regression analysis were used to screen the impact factors of imaging quality of MRCA. Then the relationships of parameters being significant different according to regression analysis with MRCA imaging quality were analyzed, and receiver operating characteristic (ROC) curve was drawn to evaluate the efficacy of the above parameters to judge MRCA images being capable to be used for diagnosis or not. Results The subjective scores of MRCA images were excellent in 36 cases, good in 46 cases, medium in 57 and poor in 31 cases. Significant differences of SNR of LAD, LCX and RCA on MRCA were found among different grade imaging qualities (all P<0.01). Body mass index (BMI) (OR=0.64), heart rate (OR=0.96), acquisition efficiency (OR=1.06) and whether hand lift (OR=0.33) were the impact parameters of MRCA image quality (all P<0.05) being correlated with imaging quality scores (r=-0.604, -0.250, 0.500, 0.407, all P<0.001). Taken BMI ≤ 25.5 kg/m2, heart rate ≤ 70 times/min, acquisition efficiency ≥ 37% and holding hand down as the diagnostic threshold, the area under the curve (AUC) for judging MRCA images being capable to be used for diagnosis or not was 0.802, 0.704, 0.955 and 0.686, respectively. Conclusion BMI, heart rate, acquisition efficiency and acquisition position were the impact factors of imaging quality of 3.0T MRCA without contrast agents.
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