2Spencer JA, Ward J, Beckiniham I J, et a.l Dynamic contrast-ehanced MR imaging of perianal fistulas [J].Am J Roentgeno, 1996,167(9):735-741.
3Morris J, Spencer JA, Ambrose NS. MR imaging classification of perianal fistulas and its implications for patient management. Radiographics,2000,20: 635- 637.
4Halligan S, Stoker J. Imaging of fistula in ano. Radiology, 2006, 239: 18- 33.
5Mahgoubi B, Kharazi HH, Mirzaei R, et al. Diagnostic accuracy of body coil MRI in describing the characteristics of perianal fistulas. Corectal Dis, 2006, 8:202 - 207.
6[1]Akasu T,Kondo H,Moriya Y,Sugihara K,Gotoda T,Fujita S,Muto T,Kakizoe T.Endorectal ultrasonography and treatment of early stage rectal cancer.World J Surg 2000; 24:1061-1068
7[2]Chen ET,Mohiuddin M,Brodovsky H,Fishbein G,Marks G.Downstaging of advanced rectal cancer following combined preoperative chemotherapy and high dose radiation.Int J Radiat Oncol Biol Phys 1994; 30:169-175
8[3]Beets-Tan RG,Beets GL.Rectal cancer:review with emphasis on MR imaging.Radiology 2004; 232:335-346
9[4]Matsuoka H,Nakamura A,Masaki T,Sugiyama M,Takahara T,Hachiya J,Atomi Y.Preoperative staging by multidetectorrow computed tomography in patients with rectal carcinoma.Am J Surg 2002; 184:131-135
10[5]Kinkel K,Lu Y,Both M,Warren RS,Thoeni RF.Detection of hepatic metastases from cancers of the gastrointestinal tract by using noninvasive imaging methods (US,CT,MR imaging,PET):a meta-analysis.Radiology 2002; 224:748-756