多层螺旋CT半定量诊断高危险程度胃肠道间质瘤

目的 对比分析高危险程度与较低危险程度(包括极低、低、中等危险程度)胃肠道间质瘤(GISTs)的多层螺旋CT(MSCT)特征,探讨高危险程度GISTs的半定量诊断.方法 回顾分析46例GISTs患者(共51个病灶)的MSCT资料,对比分析高危险程度与较低危险程度GISTs的发生部位、大小、形状、边界、生长方式、平扫及增强扫描中的特征,并进行统计学分析,并进一步得出logistic回归方程.结果 高危险程度与较低危险程度GISTs在发生部位、大小、形状、边界、远处转移等方面差异有统计学意义.肿瘤的边界和大小与肿瘤的危险程度有明显相关性.高危险程度GISTs的半定量诊断方程为ln [P/(1-P)]=-2.612X_3+0.371X_5(X_3:肿瘤的边界;X_5:肿瘤的大小).结论 上述logistic回归方程可用以判断GISTs为高危险程度的几率,有助于诊断高危险程度GISTs.

Half quantitative diagnosis of high-risk gastrointestinal stromal tumors with multi-slice spiral CT

Objective To study the half quantitative diagnostic method of the high-risk gastrointestinal stromal tumors(GISTs) with analyzing the characteristic of high-risk and lower risk GISTs with multi-slice spiral CT(MSCT).Methods CT findings of 46 patients with 51 GIST lesions were retrospectively analyzed.The location,size,shape,boundary,growth pattern and other specialties of the tumors in high-risk and lower risk GISTs were studied,moreover statistical analysis was conducted,logistic regression equation was ob...