{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T02:16:06Z","timestamp":1792030566287,"version":"4.4.0"},"reference-count":21,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,11,29]],"date-time":"2021-11-29T00:00:00Z","timestamp":1638144000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2022,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background and purpose<\/jats:title><jats:p>To investigate annular pancreas in adults using imaging features displayed on computed tomography (CT) and magnetic resonance imaging (MRI).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Retrospective review of annular pancreas in patients undergoing CT or MRI examinations. Two abdominal radiologists blindly reviewed the CT, MRI, and magnetic resonance cholangiopancreatography (MRCP) images from the Picture Archiving and Communication Systems (PACS). A Kruskal\u2013Wallis test was performed to evaluate subjective scoring, with Mann\u2013Whitney test for the comparison. A <jats:italic>p<\/jats:italic>\u2010value less than 0.05 was considered statistically significant.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eleven patients (45.8%) presented a complete ring of pancreatic tissue surrounding duodenum, displayed as circular, triangular, or sandwich sign configuration, the other 13 patients (54.2%) had incomplete annular pancreas which displayed a crocodile jaw appearance, pancreatic tissue extending in a posterolateral or anterolateral direction towards duodenum. When comparing CT images of each sequence, the arterial phase group had the highest score compared with the venous phase and the plain film group (<jats:italic>\u03c7<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a058.21, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.05). When comparing MRI enhancement volumetric interpolated breath\u2010hold examination (VIBE) sequences, arterial phase group scores were the highest (<jats:italic>\u03c7<\/jats:italic><jats:sup>2<\/jats:sup>\u00a0=\u00a018.98, <jats:italic>p<\/jats:italic>\u00a0&lt;\u00a00.05).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Both CT and MRI could detect annular pancreas, with artery phase being the best sequence to diagnose annular pancreas.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acm2.13487","type":"journal-article","created":{"date-parts":[[2021,11,30]],"date-time":"2021-11-30T16:29:23Z","timestamp":1638289763000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Investigation of annular pancreas through multiple detector spiral CT (MDCT) and MRI"],"prefix":"10.1002","volume":"23","author":[{"given":"Yongxia","family":"Zhou","sequence":"first","affiliation":[{"name":"The Yongchuan Affiliated Hospital Chongqing Medical University  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoyan","family":"Li","sequence":"additional","affiliation":[{"name":"The Yongchuan Affiliated Hospital Chongqing Medical University  Chongqing China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,11,29]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12519-014-0499-4"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00595-014-0850-3"},{"key":"e_1_2_11_4_1","doi-asserted-by":"publisher","DOI":"10.3348\/kjr.2013.14.6.905"},{"key":"e_1_2_11_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00261-014-0242-6"},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.dld.2018.03.018"},{"key":"e_1_2_11_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jamcollsurg.2007.12.009"},{"key":"e_1_2_11_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijscr.2016.02.001"},{"key":"e_1_2_11_9_1","doi-asserted-by":"publisher","DOI":"10.1097\/00004836-200305000-00019"},{"key":"e_1_2_11_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinre.2014.09.013"},{"key":"e_1_2_11_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00383-018-4299-0"},{"key":"e_1_2_11_12_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.08.1596"},{"key":"e_1_2_11_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.aanat.2012.04.006"},{"issue":"2","key":"e_1_2_11_14_1","first-page":"155","article-title":"Annular pancreas: a rare cause of acute pancreatitis","volume":"12","author":"Jarry J","year":"2011","journal-title":"JOP"},{"issue":"5","key":"e_1_2_11_15_1","doi-asserted-by":"crossref","first-page":"404","DOI":"10.1177\/000313480306900509","article-title":"Annular pancreas in the adult: two case reports and review of more than a century of literature","volume":"69","author":"Maker V","year":"2003","journal-title":"Am Surg"},{"key":"e_1_2_11_16_1","doi-asserted-by":"publisher","DOI":"10.1007\/s12262-016-1529-3"},{"key":"e_1_2_11_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijsu.2015.10.008"},{"key":"e_1_2_11_18_1","doi-asserted-by":"publisher","DOI":"10.1159\/000447292"},{"key":"e_1_2_11_19_1","doi-asserted-by":"publisher","DOI":"10.2214\/AJR.05.0774"},{"issue":"4","key":"e_1_2_11_20_1","first-page":"315","article-title":"Pancreas divisum: incidence, detection, and clinical significance. 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