高分辨率核磁黑血成像技术评估颅内静脉及静脉窦血栓形成病程分期的价值

发布时间：2018-03-24 00:07

本文选题：脑静脉及静脉窦血栓　切入点：磁共振成像　出处：《中国脑血管病杂志》2017年08期

【摘要】：目的应用高分辨率MR黑血血栓成像(BTI)技术评价颅内静脉及静脉窦血栓形成(CVT)在病程分期中的价值。方法前瞻性纳入2015年6月至2016年10月首都医科大学宣武医院37例常规影像学检查确诊为CVT的患者,均另行BTI检查。根据临床症状出现至BTI检查时间,将患者分为急性组(≤14 d,23例)和慢性组(15 d,14例)。测量BTI图像上检测到的血栓信号噪声比(SNR)和对比噪声比(CNR),比较两组血栓信号的差异。以MR静脉成像(MRV)检查结果作为参照,计算血管节段水平BTI诊断的准确性。结果 (1)血栓SNR在急性组和慢性组分别为206±97和94±41,CNR为201±96和86±40,两组比较差异有统计学意义(t值分别为4.9和5.0,均P0.01)。(2)37例CVT患者中,MRV共检出159处脑静脉及静脉窦节段存在血栓,BTI在其中152处准确识别血栓,在352处排除血栓,诊断敏感度和特异度分别为95.6%(152/159)和98.0%(352/359)。结论 BTI技术实现脑静脉血栓直接成像,能够准确区分急性与慢性血栓,具有较高准确性。
[Abstract]:Objective to evaluate the value of high resolution Mr angiography (BTI) in the diagnosis and staging of intracranial venous and venous sinus thrombosis in Xuanwu Hospital of Capital Medical University from June 2015 to October 2016. Cases of CVT diagnosed by conventional imaging examination, According to the time of clinical symptoms to BTI examination, The patients were divided into acute group (n = 23) and chronic group (n = 14). The thrombus signal noise ratio detected on BTI images and contrast noise ratio were measured to compare the difference of thrombus signals between the two groups. Results the diagnostic accuracy of BTI in acute group and chronic group was 206 卤97 and 94 卤41, respectively. The difference between the two groups was significant (4.9 and 5.0, respectively). In 159 cases of cerebral vein and sinus segment thrombosis was detected BTI was found in 152 of which the thrombus was accurately identified. The diagnostic sensitivity and specificity were 95.62 / 159 and 98.0 / 352 / 359respectively. Conclusion BTI technique can accurately distinguish acute and chronic thrombus with direct imaging of cerebral vein thrombosis.
【作者单位】：北京首都医科大学宣武医院放射科;北京首都医科大学宣武医院急诊科;北京首都医科大学宣武医院神经外科;
【分类号】：R445.2;R743

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