The research on comparing the result of anal fistula diagnose with different MR pulse sequences / 中华放射学杂志

ABSTRACT

Objective To elevate the clini cal value of different MR pulse sequences in the diagnose of anal fistula. Methods Fifteen cases with clinically suspected anal fistula were included in this study. MR pulse sequences included spin echo T 1WI, turbo inversion recovery magnitude (TIRM), fast low-angle shot image (FLASH), non-enhancement and enhancement subtraction and coronary reconstructing. The display rate of internal fistula, extra fistula, and the branch of fistula canales was compared in three kinds of sequences. Results Perianal abscess was found in 1 case. 24 different kinds of anal fistula were revealed in the other 14 patients. Ten of them were complicated with perianal abscess, and 8 of them complicated with complex multi-branch fistula. The display rate of 3D-FLASH sequence was much higher than those of T 1WI and TIRM in all cases. Conclusion 3D-FLASH sequence is a sensitive method to diagnose the anal fistula and it can reduce the examination time.