부산대학교 도서관

Nowadays, sitting for a long time before the computer is the image of life to many people. Therefore, the once rarely seen cases of anorectal fistula have a trend to gradually increase in Taiwan. Without early and accurate treatment, it could even lead to anal cancer or rectal cancer. Anorectal fistula is the abnormal connecting route aroused between anal canal or rectum and the peripheral skin of anus. Generally, because the position and the connecting structure of anorectal fistula are complicated, traditional sections of MRI inspection are difficult to present the winding and complicated fistula route as well as the range of tissues invaded. The present study use MRI 3D isotropic volume pulse sequence inspection and by way of recombination technique to obtain the specific route of anorectal fistula so as to improve the accuracy of diagnosis and effectively shorten the inspection time for the patient and reduce the discomfort of the patient due to inspection. From April, 2010 to September, 2011, a total of 15 anorectal fistula suspect patient cases are collected using SIEMENS 3T MRI; T2W 3D and, after injection of contrast, are inspected with T1W 3D pulse sequence. After inspection, perform image recombination directed to the route of anorectal fistula. From the diagnosis report by the physicians, 5 cases are diagnosed as abscess fistula nearby the anus and 10 cases are diagnosed as anorectal fistula. The result of diagnosis is clear and definite. Regarding the cases of anorectal fistula, we use 3D isotropic volume pulse sequence scanning. The primary advantage is that recombinant image from arbitrary sections is obtained in one scanning and, because of the characteristic that isotropic volume recombinant images do not distort, no image distortion results upon recombination. Therefore, mistake of misdiagnosis resulting from recombinant image distortion would not occur. The inspection time of the patient is completed within 10 minutes. It is time-saving and accurate. Therefore, the present method regarding the inspection and diagnosis of anorectal fistula is excellent in terms of the diagnosis result and is effective. The present method may be an important inspection method to replace the conventional 2D planar scanning.