【摘要】：目的探討DWI對(duì)幕上原始神經(jīng)外胚層腫瘤(SPNET)的診斷價(jià)值,為臨床診斷提供依據(jù)。方法回顧性分析18例經(jīng)手術(shù)后病理確診的SPNET的完整MRI資料,并繪制ADC圖,測(cè)量瘤體實(shí)質(zhì)及對(duì)側(cè)正常腦組織的ADC值,采用配對(duì)t檢驗(yàn)進(jìn)行分析。結(jié)果成人發(fā)生15例,3例發(fā)生于兒童,病灶體積大,邊界清,瘤周水腫輕或無(wú),囊變多見(jiàn),可伴出血;MRI上瘤體多呈T1WI等或低信號(hào),T2WI稍高或高信號(hào),增強(qiáng)掃描明顯強(qiáng)化;DWI呈等高或高信號(hào),腫瘤實(shí)質(zhì)區(qū)平均ADC值[(0.662±0.131)×10-3mm2/s]較正常腦實(shí)質(zhì)[(0.844±0.094)×10-3mm2/s]低,差異有統(tǒng)計(jì)學(xué)意義(t=10.217,P0.05)。結(jié)論 DWI及ADC值與瘤體內(nèi)部病理變化相關(guān),是常規(guī)MRI的有力補(bǔ)充。
[Abstract]:Objective to evaluate the diagnostic value of DWI in supratentorial primitive neuroectoderm tumor (SPNET), and to provide evidence for clinical diagnosis. Methods the complete MRI data of 18 cases of SPNET diagnosed pathologically after operation were analyzed retrospectively. the ADC images were drawn and the ADC values of tumor parenchyma and contralateral normal brain tissue were measured and analyzed by pairing t test. Results 15 cases occurred in adults, 3 cases occurred in children, the lesion volume was large, the boundary was clear, the edema around the tumor was light or not, the cyst was more common, accompanied by hemorrhage, the tumors on MRI showed T1WI or low signal intensity, T2WI was slightly higher or higher signal intensity, and enhanced scan was obvious. DWI showed equal high or high signal intensity. The average ADC value of tumor solid area [(0.662 鹵0.131) 脳 10-3mm2/s] was lower than that of normal brain parenchyma [(0.844 鹵0.094) 脳 10-3mm2/s], the difference was statistically significant (t 鈮，

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