摘要
目的探讨瘤内磁敏感信号(ITSS)级别对脑星形细胞瘤术前分级诊断的价值。方法分析39例经手术病理证实为脑星形细胞瘤患者的磁敏感加权成像(SWI)的影像表现,对瘤内ITSS进行分级并判断肿瘤的高、低级别,与病理结果进行对照。结果 11例低级别组星形细胞瘤中,ITSS评分0级6例,1级5例。28例高级别组星形细胞瘤中,ITSS评分1级2例,2级7例,3级19例。高低级别组星形细胞瘤的ITSS级别有统计学差异(Z=-4.986,P<0.01),ITSS级别与星形细胞瘤的病理级别呈正相关(r=0.958,P<0.01)。结论不同级别脑星形细胞瘤内ITSS级别有明显差异,ITSS级别对星形细胞瘤术前分级有重要价值。
Objective To explore the preoprative diagnostic value of intratumoral suscep- tibility signals（ITSS） level in grading cerebral astrocytomas. Methods The imaging findings of susceptibility weighted imaging （SWI） of 39 patients with pathologically confirmed cerebral aslrocytomas were analyzed, scored the intratumoral ITSS level and judged the histopathologic grade of the tumor, then compared with pathological findings. Results Astrocylomas in 11 cases of low grade group, ITSS scored 0 in 6 cases, 1 in 5 cases. 28 cases of high grade group asirocytomas, ITSS scored 1 in 2 cases, 2 in 7 cases and 3 in 19 cases. There was statistical significance in intiatumoral ITSS levels between high and low grade group astrocytomas（Z=-4.986, P〈0.01）, there was positive correlation between the levels of intratumoral ITSS and the grade of astrocytomas（r=0.958, P〈0.01 ）. Conclusion Different grades of brain astrocytomas show significantly difference on intratnmoral ITSS levels, probably be helpful fk）r evaluation of astrocytomas grading preoperatively.
出处
《中国CT和MRI杂志》
2013年第3期45-47,53,共4页
Chinese Journal of CT and MRI
基金
江门市科技局科技计划项目(编号:江科[2011]89号)
关键词
脑
星形细胞瘤
磁共振成像
磁敏感加权成像
Brain
Astrocytic tumors
Magnetic resonance imaging： Susceptibility weighted imaging
