{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,6,20]],"date-time":"2024-06-20T17:53:37Z","timestamp":1718906017881},"reference-count":24,"publisher":"Springer Science and Business Media LLC","issue":"1","license":[{"start":{"date-parts":[[2022,11,18]],"date-time":"2022-11-18T00:00:00Z","timestamp":1668729600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,11,18]],"date-time":"2022-11-18T00:00:00Z","timestamp":1668729600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"name":"Science and Technology Innovation Project of China Academy of Chinese Medical Sciences","award":["CI2021A03303"],"award-info":[{"award-number":["CI2021A03303"]}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["BMC Med Imaging"],"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Purpose<\/jats:title>\n                <jats:p>To retrospectively assess the accuracy of magnetic resonance imaging (MRI) in defining dentate line in anal fistula.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Materials and methods<\/jats:title>\n                <jats:p>Seventy patients with anal fistulas were assessed by dynamic contrast-enhanced MRI. The distance from the dentate line to the anal verge for all patients was measured by MRI. To mitigate interference, 35 patients with anal fistulas whose internal openings were located on the dentate line were excluded from this study. Two observers independently judged the positional relationship between the internal opening and the MRI-defined dentate line, and compared with the results observed by surgeon to assess the accuracy.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>The distance between the MRI-defined dentate line and the anal verge depended on the location of the internal opening and the morphology of the anal canal mucosa. The distance based on the location the internal opening and the morphology of the anal canal mucosa was 18.2\u2009\u00b1\u20098.1\u00a0mm and 20.0\u2009\u00b1\u20095.3\u00a0mm on oblique coronal T2WI, respectively. Compared with the results observed by the surgeon, the accuracy of evaluating the positional relationship between the internal opening and the dentate line from the morphology of the anal canal mucosa on MRI exceeded 89.9%. Taking 18.2\u201320.0\u00a0mm as the distance between the dentate line and the anal verge on the MRI image, the accuracy of evaluating the relationship between the position of the internal opening and the dentate line was over 85.7%. Considering both the dentate line and the anal canal mucosa, the accuracy of evaluating the relationship between the internal opening and the dentate line was over 91.5%. The results of MRI-defined dentate line were in good agreement with the results of intraoperative surgeon evaluation, and the \u03ba values were 0.70, 0.63, and 0.78, respectively.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>MRI has high accuracy in defining the dentate line in anal fistulas.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12880-022-00927-x","type":"journal-article","created":{"date-parts":[[2022,11,18]],"date-time":"2022-11-18T21:44:55Z","timestamp":1668807895000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Accuracy of magnetic resonance imaging in defining dentate line in anal fistula"],"prefix":"10.1186","volume":"22","author":[{"given":"Xiuxiang","family":"Liu","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhenchang","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hua","family":"Ren","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zheng","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jing","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,11,18]]},"reference":[{"issue":"2","key":"927_CR1","doi-asserted-by":"publisher","first-page":"127","DOI":"10.1002\/bjs.9355","volume":"101","author":"DS Keller","year":"2014","unstructured":"Keller DS, Paspulati R, Kjellmo A, Rokseth KM, Bankwitz B, Wibe A, et al. MRI-defined height of rectal tumours. Br J Surg. 2014;101(2):127\u201332.","journal-title":"Br J Surg"},{"issue":"2","key":"927_CR2","doi-asserted-by":"publisher","first-page":"S23","DOI":"10.1016\/j.jviscsurg.2014.07.008","volume":"152","author":"F Pigot","year":"2015","unstructured":"Pigot F. Treatment of anal fistula and abscess. J Visc Surg. 2015;152(2):S23\u20139.","journal-title":"J Visc Surg"},{"key":"927_CR3","doi-asserted-by":"publisher","first-page":"153","DOI":"10.1016\/j.ijsu.2019.08.003","volume":"69","author":"Z Mei","year":"2019","unstructured":"Mei Z, Wang Q, Zhang Y, Liu P, Ge M, Du P, et al. Risk factors for recurrence after anal fistula surgery: a meta-analysis. Int J Surg. 2019;69:153\u201364.","journal-title":"Int J Surg"},{"issue":"3","key":"927_CR4","first-page":"121","volume":"35","author":"V Mahadevan","year":"2017","unstructured":"Mahadevan V. Anatomy of the rectum and anal canal. Surg Infect (Larchmt). 2017;35(3):121\u20135.","journal-title":"Surg Infect (Larchmt)"},{"issue":"4","key":"927_CR5","doi-asserted-by":"publisher","first-page":"1018","DOI":"10.1002\/jmri.26776","volume":"50","author":"DB Erlichman","year":"2019","unstructured":"Erlichman DB, Kanmaniraja D, Kobi M, Chernyak V. MRI anatomy and pathology of the anal canal. J Magn Reson Imaging. 2019;50(4):1018\u201332.","journal-title":"J Magn Reson Imaging"},{"issue":"6","key":"927_CR6","doi-asserted-by":"publisher","first-page":"946","DOI":"10.3348\/kjr.2017.18.6.946","volume":"18","author":"C Durot","year":"2017","unstructured":"Durot C, Dohan A, Boudiaf M, Servois V, Soyer P, Hoeffel C. Cancer of the anal canal: diagnosis, staging and follow-up with MRI. Korean J Radiol. 2017;18(6):946\u201356.","journal-title":"Korean J Radiol"},{"issue":"6","key":"927_CR7","doi-asserted-by":"publisher","first-page":"1334","DOI":"10.1007\/s00261-017-1305-2","volume":"43","author":"A Erden","year":"2018","unstructured":"Erden A. MRI of anal canal: normal anatomy, imaging protocol, and perianal fistulas: part 1. Abdom Radiol. 2018;43(6):1334\u201352.","journal-title":"Abdom Radiol"},{"issue":"2","key":"927_CR8","doi-asserted-by":"publisher","first-page":"449","DOI":"10.1007\/s00261-020-02654-9","volume":"46","author":"YE Han","year":"2021","unstructured":"Han YE, Park BJ, Sung DJ, Kim MJ, Han NY, Sim KC, et al. How to accurately measure the distance from the anal verge to rectal cancer on MRI: a prospective study using anal verge markers. Abdom Radiol. 2021;46(2):449\u201358.","journal-title":"Abdom Radiol"},{"issue":"11","key":"927_CR9","doi-asserted-by":"publisher","first-page":"e111770","DOI":"10.1371\/journal.pone.0111770","volume":"9","author":"R Wang","year":"2014","unstructured":"Wang R, Wu P, Shi D, Zheng H, Huang L, Gu W, et al. Risk factors of synchronous inguinal lymph nodes metastasis for lower rectal cancer involving the anal canal. PLoS ONE. 2014;9(11):e111770.","journal-title":"PLoS ONE"},{"issue":"31","key":"927_CR10","doi-asserted-by":"publisher","first-page":"9245","DOI":"10.3748\/wjg.v21.i31.9245","volume":"21","author":"V Lohsiriwat","year":"2015","unstructured":"Lohsiriwat V. Treatment of hemorrhoids: a coloproctologist\u2019s view. World J Gastroenterol: WJG. 2015;21(31):9245.","journal-title":"World J Gastroenterol: WJG"},{"issue":"11","key":"927_CR11","doi-asserted-by":"publisher","first-page":"792","DOI":"10.1056\/NEJM200003163421107","volume":"342","author":"DP Ryan","year":"2000","unstructured":"Ryan DP, Compton CC, Mayer RJ. Carcinoma of the anal canal. N Engl J Med. 2000;342(11):792\u2013800.","journal-title":"N Engl J Med"},{"issue":"1","key":"927_CR12","doi-asserted-by":"publisher","first-page":"34","DOI":"10.1097\/01.sla.0000103070.13030.eb","volume":"239","author":"H Ueno","year":"2004","unstructured":"Ueno H, Mochizuki H, Hashiguchi Y, Ishikawa K, Fujimoto H, Shinto E, et al. Preoperative parameters expanding the indication of sphincter preserving surgery in patients with advanced low rectal cancer. Ann Surg. 2004;239(1):34.","journal-title":"Ann Surg"},{"issue":"1","key":"927_CR13","doi-asserted-by":"publisher","first-page":"53","DOI":"10.4103\/0971-3026.59756","volume":"20","author":"PS Khera","year":"2010","unstructured":"Khera PS, Badawi HA, Afifi AH. MRI in perianal fistulae. Indian J Radiol. 2010;20(1):53.","journal-title":"Indian J Radiol"},{"issue":"3","key":"927_CR14","first-page":"e4200","volume":"11","author":"N Bakhtawar","year":"2019","unstructured":"Bakhtawar N, Usman M. Factors increasing the risk of recurrence in fistula-in-ano. Cureus. 2019;11(3):e4200.","journal-title":"Cureus"},{"issue":"10","key":"927_CR15","doi-asserted-by":"publisher","first-page":"1250","DOI":"10.1002\/bjs.4181","volume":"90","author":"GN Buchanan","year":"2003","unstructured":"Buchanan GN, Williams AB, Bartram CI, Halligan S, Nicholls RJ, Cohen CRG. Potential clinical implications of direction of a trans-sphincteric anal fistula track. Br J Surg. 2003;90(10):1250\u20135.","journal-title":"Br J Surg"},{"issue":"10","key":"927_CR16","doi-asserted-by":"publisher","first-page":"784","DOI":"10.1016\/j.crad.2021.06.018","volume":"76","author":"N Iqbal","year":"2021","unstructured":"Iqbal N, Tozer PJ, Fletcher J, Lightner AL, Sackitey C, Corr A, et al. Getting the most out of MRI in perianal fistula: update on surgical techniques and radiological features that define surgical options. Clin Radiol. 2021;76(10):784-e17.","journal-title":"Clin Radiol"},{"issue":"26","key":"927_CR17","doi-asserted-by":"publisher","first-page":"3201","DOI":"10.3748\/wjg.15.3201","volume":"15","author":"MC Schubert","year":"2009","unstructured":"Schubert MC, Sridhar S, Schade RR, Wexner SD. What every gastroenterologist needs to know about common anorectal disorders. World J Gastroenterol WJG. 2009;15(26):3201.","journal-title":"World J Gastroenterol WJG"},{"key":"927_CR18","doi-asserted-by":"publisher","first-page":"109294","DOI":"10.1016\/j.ejrad.2020.109294","volume":"132","author":"X Liu","year":"2020","unstructured":"Liu X, Wang Z, Ren H, Ren A, Wang W, Yang X, et al. Evaluating postoperative anal fistula prognosis by diffusion-weighted MRI. Eur J Radiol. 2020;132:109294.","journal-title":"Eur J Radiol"},{"issue":"9","key":"927_CR19","doi-asserted-by":"publisher","first-page":"4734","DOI":"10.1007\/s00330-020-06826-5","volume":"30","author":"S Halligan","year":"2020","unstructured":"Halligan S, Tolan D, Amitai MM, Hoeffel C, Kim SH, Maccioni F, et al. ESGAR consensus statement on the imaging of fistula-in-ano and other causes of anal sepsis. Eur Radiol. 2020;30(9):4734\u201340.","journal-title":"Eur Radiol"},{"issue":"8","key":"927_CR20","doi-asserted-by":"publisher","first-page":"600","DOI":"10.1007\/BF02605754","volume":"24","author":"S Nivatvongs","year":"1981","unstructured":"Nivatvongs S, Stern HS, Fryd DS. The length of the anal canal. Dis Colon Rectum. 1981;24(8):600\u20131.","journal-title":"Dis Colon Rectum"},{"issue":"6","key":"927_CR21","doi-asserted-by":"publisher","first-page":"539","DOI":"10.1007\/s11604-020-00933-5","volume":"38","author":"S Tatsumoto","year":"2020","unstructured":"Tatsumoto S, Itoh T, Takahama J, Marugami N, Minamiguchi K, Tanaka T, et al. Accuracy of magnetic resonance imaging in predicting dentate line invasion in low rectal cancer. Jpn J Radiol. 2020;38(6):539\u201346.","journal-title":"Jpn J Radiol"},{"issue":"6","key":"927_CR22","doi-asserted-by":"publisher","first-page":"513","DOI":"10.1071\/SH12034","volume":"9","author":"P Pandey","year":"2012","unstructured":"Pandey P. Anal anatomy and normal histology. Sex Health. 2012;9(6):513\u20136.","journal-title":"Sex Health"},{"issue":"2","key":"927_CR23","doi-asserted-by":"publisher","first-page":"151","DOI":"10.1016\/0730-725X(95)02056-Y","volume":"14","author":"BE Van Van Beers","year":"1996","unstructured":"Van Van Beers BE, Kartheuser A, Delos MA, Grandin C, Detry R, Jamart J, et al. MRI of the anal canal: correlation with histologic examination. Magn Reson Imaging. 1996;14(2):151\u20136.","journal-title":"Magn Reson Imaging"},{"issue":"2","key":"927_CR24","doi-asserted-by":"publisher","first-page":"85","DOI":"10.1016\/S0009-9260(98)80053-6","volume":"53","author":"S Halligan","year":"1998","unstructured":"Halligan S. Imaging fistula-in-ano. Clin Radiol. 1998;53(2):85\u201395.","journal-title":"Clin Radiol"}],"container-title":["BMC Medical Imaging"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12880-022-00927-x.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1186\/s12880-022-00927-x\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1186\/s12880-022-00927-x.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,11,18]],"date-time":"2022-11-18T21:45:50Z","timestamp":1668807950000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmcmedimaging.biomedcentral.com\/articles\/10.1186\/s12880-022-00927-x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,11,18]]},"references-count":24,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2022,12]]}},"alternative-id":["927"],"URL":"https:\/\/doi.org\/10.1186\/s12880-022-00927-x","relation":{},"ISSN":["1471-2342"],"issn-type":[{"value":"1471-2342","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,11,18]]},"assertion":[{"value":"2 July 2022","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"5 November 2022","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"18 November 2022","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Declarations"}},{"value":"Ethics approval and consent to participate. This retrospective study performed at one institution was approved by the Ethics Review Committee of Xiyuan Hospital, China Academy of Chinese Medical Sciences. The requirements for consent to participate and written informed consent were waived by the Institutional Review Board. We confirm that all methods were performed in accordance with the relevant guidelines and regulations.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethics approval and consent to participate"}},{"value":"Not applicable.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Consent for publication"}},{"value":"The authors declare that they have no competing interests.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}],"article-number":"201"}}