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目的探讨不同年龄组幕上脑实质室管膜瘤ADC值特点及ADC值在幕上脑实质室管膜瘤诊断中的应用价值。方法搜集33例经手术和病理证实的幕上脑实质室管膜瘤患者影像资料,包括MRI平扫、扩散加权成像(DWI)及增强检查,将患者分为儿童组(<12岁)、成人组(≥18岁),对两组不同病理类型ADC值进行统计学分析和均值比较。结果儿童组12例,平均r ADC值0.94±0.52,WHOⅡ型4例,WHOⅡ~Ⅲ型1例,WHOⅢ型7例;成人组21例,平均r ADC值1.17±0.36,WHOⅡ型1例,WHOⅡ~Ⅲ型2例,WHOⅢ型18例;WHOⅡ型r ADC值儿童组小于成人组;WHOⅡ~Ⅲ型r ADC值儿童组小于成人组;WHOⅢ型儿童组r ADC值小于成人组,两组间r ADC值差异具有统计学意义(t=3.29,P=0.00)。结论儿童组、成人组幕上脑实质室管膜瘤影像表现不同,r ADC值存在差异,儿童组各病理类型r ADC值均小于成人组。ADC值在幕上脑实质室管膜瘤诊断中具有重要意义。
Objective To investigate the value of ADC value of supratentorial supratentorial ependymoma in different age groups and the value of ADC value in the diagnosis of supratentorial parenchyma. Methods Thirty-three patients with supratentorial parenchyma of ependymoma confirmed by surgery and pathology were enrolled in this study. The patients were divided into children (<12 years old), adults Group (≥18 years old). The ADC values of two different pathological types were statistically analyzed and compared. Results In the children group, the average r ADC value was 0.94 ± 0.52, 4 cases were WHO Ⅱ, 1 WHO Ⅱ ~ Ⅲ and 7 WHO Ⅲ. The average r ADC was 1.17 ± 0.36 in adults and 1 WHO Ⅱ WHO Ⅲ type 18 cases; WHO Ⅱ type r ADC value of children less than adult group; WHO Ⅱ ~ Ⅲ type r ADC value of children less than adult group; WHO Ⅲ type children r ADC value less than the adult group, r ADC value difference was statistically significant (t = 3.29, P = 0.00). Conclusion There are differences in r ADC value between the supratentorial and supratentorial submucosal ependymoma in children and adults. The r ADC value of each pathological type in children is less than that in adults. ADC value in the supratentorial parenchyma ependymoma diagnosis is of great significance.