{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T14:35:31Z","timestamp":1777473331863,"version":"3.51.4"},"reference-count":19,"publisher":"SAGE Publications","issue":"1","license":[{"start":{"date-parts":[[2005,2,1]],"date-time":"2005-02-01T00:00:00Z","timestamp":1107216000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Acta Radiol"],"published-print":{"date-parts":[[2005,2]]},"abstract":"<jats:p>Purpose: To compare a STIR sequence with gadolinium\u2010enhanced techniques on endoanal magnetic resonance (MR) imaging of fistulas\u2010in\u2010ano by correlating the findings with those at surgery.<\/jats:p>\n                  <jats:p>Material and Methods: Twenty\u2010two consecutive patients with clinical suspicion of perianal sepsis were studied using an endoanal coil followed immediately by a phased array coil. T1\u2010weighted precontrast and postcontrast and STIR images in transverse and coronal planes were produced with each coil and analysed by noting the presence and site of a collection, primary track, the position of any internal opening, and subcutaneous or supralevator extension. An \u201cexpert\u201d and also a \u201ctrainee\u201d radiologist assessed the images. Operative findings were similarly recorded. The Fisher exact test was used to compare imaging with surgery. Interobserver variation was calculated using a kappa statistic.<\/jats:p>\n                  <jats:p>Results: Of 22 patients with suspected fistulas, 8 were simple, 4 were complex, and 3 were superficial sinuses. Five had no anal pathology, 1 had anal excoriation, and 1 had a polyp. At surgery, 6 intersphincteric, 1 transsphincteric, 8 extrasphincteric, no supralevator collections, and 9 internal openings were noted. The overall sensitivity and specificity for detecting these were 75% and 64%, respectively, for STIR imaging, and 58.3% and 62.8% for gadolinium\u2010enhanced imaging. There was good agreement between the \u201ctrainee\u201d and the \u201cexpert\u201d in the interpretation of images (kappa\u200a=\u200a0.7).<\/jats:p>\n                  <jats:p>Conclusion: A STIR sequence is more sensitive overall than gadolinium\u2010enhanced techniques on endoanal magnetic resonance imaging of fistulas\u2010in\u2010ano because of increased sensitivity in detecting the internal opening. A combination of endoanal and phased array techniques using STIR imaging sequences is valuable preoperative assessment in both simple and complex cases.<\/jats:p>","DOI":"10.1080\/02841850510015947","type":"journal-article","created":{"date-parts":[[2006,2,21]],"date-time":"2006-02-21T12:23:54Z","timestamp":1140524634000},"page":"3-8","source":"Crossref","is-referenced-by-count":13,"title":["Endoanal magnetic resonance imaging of fistula\u2010in\u2010ano: a comparison of stir with gadolinium\u2010enhanced techniques"],"prefix":"10.1177","volume":"46","author":[{"given":"T. A.","family":"Szyszko","sequence":"first","affiliation":[{"name":"Department of Imaging, Hammersmith Hospitals NHS Trust, London, UK; Department of Surgery, Ealing Hospital, Southall, Middlesex, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Bush","sequence":"additional","affiliation":[{"name":"Department of Imaging, Hammersmith Hospitals NHS Trust, London, UK; Department of Surgery, Ealing Hospital, Southall, Middlesex, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Gishen","sequence":"additional","affiliation":[{"name":"Department of Imaging, Hammersmith Hospitals NHS Trust, London, UK; Department of Surgery, Ealing Hospital, Southall, Middlesex, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D.","family":"Sellu","sequence":"additional","affiliation":[{"name":"Department of Imaging, Hammersmith Hospitals NHS Trust, London, UK; Department of Surgery, Ealing Hospital, Southall, Middlesex, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. M.","family":"DeSouza","sequence":"additional","affiliation":[{"name":"Department of Imaging, Hammersmith Hospitals NHS Trust, London, UK; Department of Surgery, Ealing Hospital, Southall, Middlesex, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,8,30]]},"reference":[{"key":"E00001","doi-asserted-by":"crossref","unstructured":"Barker, P. G, Lunniss, P. J, Armstrong, P, Reznek, R. H, Cottam, K, Phillips, R. K. Magnetic resonance imaging of fistula\u2010in\u2010ano: technique, interpretation and accuracy. Clin Rad, 1994; 49: 7\u201313","DOI":"10.1016\/S0009-9260(05)82906-X"},{"key":"E00002","doi-asserted-by":"crossref","unstructured":"Bydder, G. M, Pennock, J. M, Steiner, R. E, Khenia, S, Payne, J. A, Young, I. R. The short T1 inversion recovery sequence: an approach to MR imaging of the abdomen. 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