动态增强MRI评价脊柱肿瘤血供与DSA的相关性

发布时间：2018-05-15 06:38

本文选题：磁共振成像 + 动态　；参考：《介入放射学杂志》2016年03期

【摘要】：目的确定动态增强磁共振成像(DCE-MRI)在评价脊柱肿瘤血供与DSA染色的相关性。方法 40例诊断为脊柱肿瘤的患者在行栓塞术前作MR检查。根据血管造影表现,肿瘤分为富血供组、中等血供组和乏血供组。通过对肿瘤强化区域的感兴趣区(ROI)分析,应用常规MR的强化程度和DCEMRI参数评价肿瘤血供。结果 40例肿瘤分为乏血供组(16例)、中等血供组(12例)和富血供组(12例)。MRI强化程度在乏血供组和富血供组间没有统计学差异(P0.05)。而DCE-MRI在两组间显示差异有统计学意义(P0.01)。而且相对于MRI强化程度,DCE-MRI参数与DSA的关系更加密切。RSlopemax临界值为1.325时预测乏血供肿瘤的特异度和灵敏度最高,分别为100%和87.5%,而临界值为1.85时用于预测富血供肿瘤的特异度和灵敏度最高,分别为100%和96.4%。结论与常规MRI相比,DCE-MRI可以更准确地评价脊柱肿瘤血供,而且显示与DSA更好的相关性。
[Abstract]:Objective to determine the correlation between dynamic enhanced magnetic resonance imaging (DCE-MRI) and DSA staining in evaluating blood supply of spinal tumors. Methods 40 patients with spinal tumors were examined by Mr before embolization. According to angiographic findings, the tumor was divided into rich blood supply group, medium blood supply group and poor blood supply group. The enhancement degree of conventional Mr and DCEMRI parameters were used to evaluate the blood supply of tumor by analyzing the region of interest in tumor enhancement. Results 40 cases of tumors were divided into two groups: the lack of blood supply group (16 cases), the medium blood supply group (12 cases) and the rich blood supply group (12 cases). There was no significant difference in the enhancement degree of MRI between the lack of blood supply group and the rich blood supply group (P 0.05). There was a significant difference in DCE-MRI between the two groups (P 0.01). The correlation between DCE-MRI parameters and DSA was closer than that of MRI enhancement. The specificity and sensitivity of DCE-MRI was the highest when the critical value of RSlopemax was 1.325. When the critical value was 1.85, the specificity and sensitivity of predicting the tumor with rich blood supply were the highest, 100% and 96.4%, respectively. Conclusion compared with conventional MRI, DCE-MRI can evaluate the blood supply of spinal tumors more accurately and show a better correlation with DSA.
【作者单位】：第二军医大学附属长征医院影像科;解放军第八五医院影像科;
【分类号】：R738;R445.2

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