摘要
目的:通过与手术病理分期对比,比较MRI平扫及增强扫描在宫颈癌分期中的价值。方法:搜集75例经手术病理证实的宫颈癌患者,由2位工作经验丰富的放射科医师共同对其MRI平扫及增强图像进行评价,包括肿瘤位置、大小、边界清晰度、信号特征、对周围组织的侵犯情况,并分别根据MRI平扫及增强表现对所有患者进行分期,以手术病理分期为金标准,比较两种分期方法对宫颈癌总体分期准确性,各期别分期准确性差异。结果:MRI增强扫描显示肿瘤边界明显较MRI平扫清晰(P﹤0.001);MRI增强及平扫对宫颈癌总体分期准确度分别为85.3%、77.3%,在对宫颈癌Ⅰa、Ⅱa、Ⅱb各期别分期评判中,MRI增强准确度分别为89.3%、85.3%、96.0%,MRI平扫准确度分别为84.0%、77.3%、93.3%,统计学分析表明MRI平扫及增强扫描在宫颈癌总体分期及Ⅰa、Ⅱa、Ⅱb各期别分期准确性差异均无统计学意义(P均>0.05)。结论:在宫颈癌分期方面,MRI增强准确性优于MRI平扫,但两者差异无统计学意义。
Objective：To compare T2-weighted and contrast-enhanced Tl-weighted images in staging of uterine cervi-cal carcinoma with 3.0T MRI scanner. Methods： Seventy-five consecutive patients （mean age 46.8 years） with biopsy-prov- en cervical carcinoma underwent 3.0T MRI scan. Collected data consisted of tumour location,margin,cancer extension and MR staging with the consensus of two experienced radiologists. MR staging criteria followed with post-operational his- topathological findings. Results：Tumour margins appeared significantly more clear on contrast-enhanced Tl-weighted images than those on T2-weighted （P〈O. 001）. The accuracy of staging with contrast-enhanced Tl-weighted and T2-weighted was 85.3% and 77.3% respectively. In stage I a, Ⅱa and Ⅱb,the accuracy of staging on contrast-enhanced Tl-weighted ima- ging was 89.3% ,85.3% and 96% ,which was higher than that on T2-weighted imaging with 84.0% ,77.3% and 93.3%, but the difference was not statistically significant by McNemar test （P〉O. 05）. Conclusion：Contrast-enhanced T1-weighted imaging is more useful for cervical carcinoma staging than T2-weighted imaging, although the difference is not statistically signifancant.
出处
《放射学实践》
2014年第2期145-148,共4页
Radiologic Practice
基金
首都医学发展科研基金资助(2009_2010)
关键词
宫颈肿瘤
磁共振成像
肿瘤分期
Uterine cervical neoplasms
Magnetic resonance imaging
Neoplasm staging
