MRI三维平衡式稳态自由进动序列在评估直肠癌壁外血管侵犯中的价值  

The value of MRI three-dimensional balanced steady-state free precession sequence in the evaluation of extramural vascular invasion in rectal cancer

作　　者：王滔[1] 陈梅鹃 李娜[1] 赵艳[1] 尹阳[1] 郭济韬 WANG Tao;CHEN Meijuan;LI Na;ZHAO Yan;YIN Yang;GUO Jitao(Department of Radiology,Leshan People's Hospital,Leshan,Sichuan Province 614000,China;De partment of Geriatrics,Leshan People's Hospital,Leshan,Sichuan Province 614000,China)

机构地区：[1]乐山市人民医院放射科,四川乐山614000 [2]乐山市人民医院老年病科,四川乐山614000

出　　处：《实用放射学杂志》2022年第4期586-589,共4页Journal of Practical Radiology

基　　金：乐山市科技计划项目(20SZD080).

摘　　要：目的探讨MRI三维平衡式稳态自由进动(3DbSSFP)序列对直肠癌壁外血管侵犯(EMVI)的诊断价值.方法分析经病理证实的直肠癌患者196例,均行MRI平扫及3DbSSFP序列扫描.首先采用T_(2)WI评分评估EMVI,然后在3DbSSFP序列上观察血管信号评估EMVI;符合直接手术条件者共121例,将上述2种方法分别与病理结果对照分析.结果T_(2)WI评分与病理对照一致性较低(k=0.255,P<0.001);3DbSSFP序列与病理对照一致性一般(k=0.691,P<0.001).结论MRI3DbSSFP序列能较好地显示EMVI信号改变,有助于提高直肠癌EMVI的诊断准确率.Objective To investigate the value of the three-dimensional balanced steady-state free precession(3D b SSFP)sequence of MRI in the diagnosis of extramural vascular invasion(EMVI)in rectal cancer.Methods A total of 196 patients diagnosed with rectal cancer underwent MRI plain scans and 3D b SSFP sequence.First,EMVI was assessed using the T_(2)WI score.Then,EMVI was evaluated by observing the blood vessel signals using the 3D b SSFP.A total of 121 cases matched the surgical criteria.The assessment results of the both methods were comparatively analysed with the pathological results.Results The assessment results of T_(2)WI score were poorly consistent with the pathological results(k=0.255,P<0.001),however,the assessment results of 3D b SSFP were generally consistent with the pathological results(k=0.691,P<0.001).Conclusion The MRI 3D b SSFP can clearly show the blood vessel signals,and can improve the diagnostic accuracy of EMVI in rectal cancer.

关 键 词：直肠癌 壁外血管侵犯 磁共振成像 平衡式稳态自由进动 

分 类 号：R735.37[医药卫生—肿瘤] R445.2[医药卫生—临床医学]