磁共振成像及超声检查诊断子宫腺肌症价值的ROC曲线分析

目的用受试者操作特性(ROC)分析方法评价磁共振成像(MRI)、超声检查(US)对子宫腺肌症的诊断价值。方法回顾性分析经手术与病理证实的子宫腺肌症(78例)和子宫肌瘤(122例)的MRI和US资料,以五级法判读,采用Windows95版ROCKIT软件进行ROC曲线分析,使用微软Excel8.0软件绘制ROC曲线图。结果MRI和US检查的ROC曲线分析显示,MRI曲线的截距(a值)为5.17,斜率(b值)为1.63,曲线下面积(Az)为0.9966;US曲线的a值为1.78,b值为0.82,Az值为0.9157。两种方法的Az值明显不同,差异有统计学意义(P=0.000)。结论MRI诊断子宫腺肌症较US具有优势。

Analysis of magnetic resonance imaging and ultrasonography on the diagnosis of adenomyosis with receiver operating characteristic curve

Objective To evaluate the magnetic resonance imaging(MRI) and ultrasonography(US) on the diagnosis of adenomyosis with receiver operating characteristic(ROC) curve. Methods Retrospectively study to the MRI and US data of 78 adenomyosisand patients and 122 hystromyoma patients confirmed by surgery,and the pathological were analyzed by ROC curve of ROCKIT software. Results The intercept of ROC curve of MRI (a) was 5.17,its slope (b) was 1.63 and its area under the curve (Az) was 0.9966.The intercept of ROC curve of US(a) was 1.78,its slope(b)was 0.82 and its area under the curve(Az) was 0.9157.There is an significant difference on Az between MRI and US(P=0.000). Conclusion MRI was better than US in diagnosis of adenomyosis.