张斐斐,冉云彩,朱明,王潇,李淑健,程敬亮,高雪梅.径向采集逐点编码缩短时间MR血管成像(PETRA-MRA)用于支架成形术治疗大脑中动脉斑块狭窄术后随访[J].中国医学影像技术,2021,37(9):1286~1290
径向采集逐点编码缩短时间MR血管成像(PETRA-MRA)用于支架成形术治疗大脑中动脉斑块狭窄术后随访
Pointwise encoding time reduction with radial acquisition in subtraction-based MR angiography (PETRA-MRA) for following-up of patients with middle cerebral arteryplaque stenosis after stent angioplasty
投稿时间:2020-10-24  修订日期:2021-06-11
DOI:10.13929/j.issn.1003-3289.2021.09.002
中文关键词:  大脑中动脉  斑块  狭窄  血管成形术  磁共振血管成像
英文关键词:middle cerebral artery  plaque  stenosis  angioplasty  magnetic resonance angiography
基金项目:河南省医学科技攻关计划联合共建项目(2018020137)。
作者单位E-mail
张斐斐 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
冉云彩 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
朱明 郑州大学第一附属医院放射介入科, 河南 郑州 450052  
王潇 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
李淑健 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
程敬亮 郑州大学第一附属医院磁共振科, 河南 郑州 450052  
高雪梅 郑州大学第一附属医院磁共振科, 河南 郑州 450052 gaoxuemei1964@163.com 
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中文摘要:
      目的 评价径向采集逐点编码缩短时间MR血管成像(PETRA-MRA)用于支架血管成形术治疗大脑中动脉(MCA)斑块狭窄后随访的价值。方法 纳入28例经支架血管成形术治疗的大脑MCA斑块狭窄患者,行PETRA-MRA及时间飞跃法MR血管成像(TOF-MRA),并于其后1周内行数字减影血管造影(DSA),评估MRA图像质量,测量MCA狭窄程度及病变长度。采用组内相关系数(ICC)评估测量结果的观察者间一致性;以Bland-Altman Plots散点图评估观察者间及MRA测量结果与DSA的一致性;采用Spearman相关分析评价MRA测量结果与DSA的相关性。结果 PETRA-MRA图像所示支架内血流信号及磁敏感伪影评分明显高于TOF-MRA(P均<0.05)。测量狭窄程度及病变长度的观察者间一致性均较高(ICC均>0.75,P均<0.05)。Bland-Altman Plots散点图及相关性分析结果表明PETRA-MRA与DSA测量MCA狭窄程度及病变长度的一致性及相关性均高于TOF-MRA。结论 支架血管成形术治疗MCA斑块狭窄术后,PETRA-MRA可准确评估MCA狭窄程度及支架区异常血管长度,图像质量佳。
英文摘要:
      Objective To observe the value of pointwise encoding time reduction with radial acquisition in subtraction-based MR angiography (PETRA-MRA)for following-up of middle cerebral artery (MCA) plaque stenosis stent angioplasty. Methods A total of 28 patients who underwent stent angioplasty due to atherosclerotic stenosis of MCA were enrolled. Postoperative PETRA-MRA and time of flight MR angiography (TOF-MRA) were performed, and digital subtraction angiography (DSA) was performed within 1 week after MR angiography (MRA). The imaging qualities of MRA were evaluated, and the stenosis degrees and lesion length of MCA were measured. Inter-class correlation coefficient (ICC) was used to evaluate the consistency of measurement results between observers, while Bland-Altman Plots were performed to assess inter-observer consistency and consistency of MRA measurements with DSA. Taken DSA results as gold standards, Spearman correlation analysis was used to evaluate the correlation of MRA and DSA results. Results After stent angioplasty of MCA, the scores of blood flow signal and magnetic sensitive artifacts of PETRA-MRA images were significantly higher than those of TOF-MRA (both P<0.05). The inter-observer consistency of stenosis degree and lesion length were both high (both ICC>0.75, P<0.05). Bland-Altman Plots showed good agreement between 2 observers. Bland-Altman Plots and correlation analysis showed that the consistency and correlation between PETA-MRA and DSA for measurement of MCA stenosis degree and lesion length were higher than those of TOF-MRA. Conclusion After stent angioplasty of MCA plaque stenosis, PETRA-MRA could be used to accurately evaluate the degree of stenosis and the abnormal vessel length with good imaging quality.
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