MRI肛瘘内口诊断在治疗中的价值:磁共振PDWI抑脂与增强T1WI抑脂序列的对照研究  

The Value of MRI in the Treatment of Anal Fistula's Internal Opening:Comparison of MR PDWI PFS Sequence and T1WI SPIR Enhanced Sequence

作　　者：张莲[1,2] 蔡卫东[2] 孙希文[1] 

机构地区：[1]同济大学附属肺科医院 [2]上海市嘉定区中医医院

出　　处：《中国医学计算机成像杂志》2016年第5期435-439,共5页Chinese Computed Medical Imaging

基　　金：上海市卫生计生委课题;编号:20154Y0118~~

摘　　要：目的:通过对照磁共振PDWI抑脂序列与增强T1WI抑脂序列对肛瘘内口诊断价值的差异,探索其对手术方案选择的影响,以提高肛瘘的治疗效果。方法:68例经手术病理证实为肛瘘的患者,术前行MRI扫描。以手术结果为标准,比较分析横断位PDWI抑脂序列与增强T1WI抑脂序列对肛瘘内口的显示。结果:以手术结果为标准,PDWI抑脂序列与增强T1WI抑脂序列肛瘘内口定位诊断正确率分别为94.11%和95.58%,差别无统计学意义(P>0.05)。但增强T1WI抑脂序列对肛瘘内口显示清晰度的评分明显高于PDWI抑脂序列,差别有统计学意义(P<0.001)。结论:PDWI抑脂序列可以准确定位肛瘘内口,对肛瘘的术式的选择及提高治疗效果具有重要价值,但其对肛瘘内口显示的清晰度不如增强T1WI抑脂序列,不过后者需要注射MR对比剂,增加了患者经济负担和副作用风险。Purpose： To explore the value of MR PDWI PFS sequence and TIWI SPIR enhanced sequence in diagnosing anal fistula＇s internal opening, and to improve the effect of treatment of anal fistula. Methods： Sixty-eight patients with operation proven perianal fistula received MR scans before surgery. According to the surgical results, the display rate of anal fistula＇s internal openings by PDWI PFS sequence and T1WI SPIR enhanced sequence were compared. Results： According to the surgical results, the accuracy of the demonstration of anal fistula＇s internal openings was 94.11% by PDWI PFS sequence, and 95.58% by T1WI SPIR enhanced sequence. There was no statistical significant difference between them （P〉0.05）. T1WI SPIR enhanced sequence provided a better and clearer view of the internal openings, there were statistical significant differences between them （P 〈 0.01）. Conclusion： PDWI PFS sequence can accurately demonstrate the internal openings of perianal fistula. It is valuable in surgery planning and improve the treatment effect. But the clarity is not better than T1WI SPIR enhanced sequence. T1WI SPIR enhanced sequence has disadvantages including the need of MR contrast agent and increasing the risk of side effect and the economic burden of the patient.

关 键 词：磁共振成像 PDWI抑脂序列 增强T1WI抑脂序列 肛瘘 治疗 内口 

分 类 号：R445.2[医药卫生—影像医学与核医学]