{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,16]],"date-time":"2026-07-16T16:04:38Z","timestamp":1784217878007,"version":"3.55.0"},"reference-count":12,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T00:00:00Z","timestamp":1783296000000},"content-version":"vor","delay-in-days":5,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,7,1]],"date-time":"2026-07-01T00:00:00Z","timestamp":1782864000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2026,7]]},"abstract":"Abstract<\/jats:title>\n \n Background<\/jats:title>\n A fatal incident in which magnetic resonance (MR) may be involved and the appearance of strong MR attraction experienced by some MR\u2010conditional endoclips have cast confusion over the MR safety of MR\u2010conditional endoclips, which may lead to unnecessary delay or denial of MRI to some patients. On the other hand, there are endoclips that are MRI\u2010unsafe, yet not all MRI facilities screen patients for endoclips.<\/jats:p>\n <\/jats:sec>\n \n Purpose<\/jats:title>\n Our purpose is to promote a better understanding of the MRI risks associated with endoclips to facilitate proper management of MRI exams involving patients with endoclips.<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n Deflection angle measurements were conducted on three models of MR\u2010conditional endoclips on a 1.5T and a 3T MRI system to assess the magnetic forces on the endoclips. Detachment force measurements were also performed on porcine stomach mucosa specimens to evaluate the attachment force. Besides, detachment tests were conducted inside the magnet bore to evaluate the effect of magnetic\u2010induced torque.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n The measured detachment force was much larger than the magnetic force for each clip tested, with the ratios of the two forces being 87.3\u2013251 at 1.5T and 46.7\u2013130 at 3T, indicating low detachment risk for these clips. This was further supported by the detachment tests inside the magnet bore in which no endoclip detached.<\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n This study reinforces the MR conditional labeling on endoclips, demonstrating that the appearance of strong magnetic force does not necessarily imply an endoclip is MR unsafe. If the counter force (i.e., the detachment force) provided by an endoclip is much larger than the MRI magnetic force, as observed in this study, the risk of clip detachment during MRI is low. This paper should assist in facilitating proper management of MRI exams involving patients with endoclips, preventing unnecessary denial of MRI examinations to patients while protecting patient safety.<\/jats:p>\n <\/jats:sec>","DOI":"10.1002\/acm2.70688","type":"journal-article","created":{"date-parts":[[2026,7,7]],"date-time":"2026-07-07T06:21:49Z","timestamp":1783405309000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Safety of endoclips for magnetic resonance imaging"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7452-1197","authenticated-orcid":false,"given":"Wingchi Edmund","family":"Kwok","sequence":"first","affiliation":[{"name":"Department of Imaging Sciences University of Rochester Medical Center Rochester New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adam","family":"Gentile","sequence":"additional","affiliation":[{"name":"Department of Imaging Sciences University of Rochester Medical Center Rochester New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Randy","family":"Crane","sequence":"additional","affiliation":[{"name":"Department of Imaging Sciences University of Rochester Medical Center Rochester New York USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,7,6]]},"reference":[{"key":"e_1_2_11_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.gie.2006.02.042"},{"key":"e_1_2_11_3_1","doi-asserted-by":"publisher","DOI":"10.4253\/wjge.v2.i10.344"},{"key":"e_1_2_11_4_1","unstructured":"American College of Radiology.ACR Manual on MR Safety2024."},{"key":"e_1_2_11_5_1","unstructured":"Food and Drug Administration (FDA).Testing and Labeling Medical Devices for Safety in the Magnetic Resonance (MR) Environment\u2014Guidance for Industry and Food and Drug Administration Staff.2023."},{"key":"e_1_2_11_6_1","doi-asserted-by":"publisher","DOI":"10.1055\/s\u20100034\u20101377542"},{"key":"e_1_2_11_7_1","unstructured":"ASTM F2052\u201021 Standard Test Method for Measurement of Magnetically Induced Displacement Force on Medical Devices in the Magnetic Resonance Environment ASTM International West Conshohocken PA 2022.https:\/\/store.astm.org\/f2052\u201021.html"},{"key":"e_1_2_11_8_1","unstructured":"ShellockFG.Safety information article: Spatial Gradient Magnetic Field: How This Information Is Applied to Labeling of Medical Implants and Devices. 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