Comparision of MR-sequence in the diagnosis of anal fistula—The clinical value of 3D FLASH

Abstract

To elevate the clinical value of3D-FLASH in the diagnosis of anal fistula and compare it with convationd MR sequence, MR sequences, consisting of spin echo T1WI, turbo invertion recovery magnitude (TIRM), fast low-angle shot image (FLASH), mon-enhancement and enhancement substraction and coronary reconstructing, was conducted in15 cases suspected of anal fistula. Comparison was made among the three sequences in display rate of internal fistula, external fistula, the branch of fistule connulas. Our results showed that1 patient had perianal abscess.24 different anal fistulas were identified in14 patients, and10 of them was complicated with perianal abscess and8 of them with complex multi-branch fistula. The display rate of3D-FLASH sequence was much higher than those of T1WI and TIRM in all cases. It is concluded that3D-FLASH squence is an senstive and time-efficient technique for the dignosis of anal fistula.

References

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