本文選題：磁共振成像 + 動(dòng)態(tài)　； 參考：《介入放射學(xué)雜志》2016年03期

【摘要】：目的確定動(dòng)態(tài)增強(qiáng)磁共振成像(DCE-MRI)在評(píng)價(jià)脊柱腫瘤血供與DSA染色的相關(guān)性。方法 40例診斷為脊柱腫瘤的患者在行栓塞術(shù)前作MR檢查。根據(jù)血管造影表現(xiàn),腫瘤分為富血供組、中等血供組和乏血供組。通過對(duì)腫瘤強(qiáng)化區(qū)域的感興趣區(qū)(ROI)分析,應(yīng)用常規(guī)MR的強(qiáng)化程度和DCEMRI參數(shù)評(píng)價(jià)腫瘤血供。結(jié)果 40例腫瘤分為乏血供組(16例)、中等血供組(12例)和富血供組(12例)。MRI強(qiáng)化程度在乏血供組和富血供組間沒有統(tǒng)計(jì)學(xué)差異(P0.05)。而DCE-MRI在兩組間顯示差異有統(tǒng)計(jì)學(xué)意義(P0.01)。而且相對(duì)于MRI強(qiáng)化程度,DCE-MRI參數(shù)與DSA的關(guān)系更加密切。RSlopemax臨界值為1.325時(shí)預(yù)測(cè)乏血供腫瘤的特異度和靈敏度最高,分別為100%和87.5%,而臨界值為1.85時(shí)用于預(yù)測(cè)富血供腫瘤的特異度和靈敏度最高,分別為100%和96.4%。結(jié)論與常規(guī)MRI相比,DCE-MRI可以更準(zhǔn)確地評(píng)價(jià)脊柱腫瘤血供,而且顯示與DSA更好的相關(guān)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.
【作者單位】： 第二軍醫(yī)大學(xué)附屬長(zhǎng)征醫(yī)院影像科;解放軍第八五醫(yī)院影像科;
【分類號(hào)】：R738;R445.2

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