{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T04:26:04Z","timestamp":1783052764881,"version":"3.54.6"},"reference-count":21,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2009,2,25]],"date-time":"2009-02-25T00:00:00Z","timestamp":1235520000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Resonance Imaging"],"published-print":{"date-parts":[[2009,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>We report two cases with tiny ferromagnetic intraocular foreign bodies (FBs) that were demonstrated only on magnetic resonance imaging (MRI) and confirmed by subsequent ophthalmologic operation. Both of the patients had a history of ocular trauma and their clinical symptoms were compatible with an intraocular FB. Plain x\u2010ray film, 3 mm slice thickness computed tomography (CT) scans (Toshiba TXT 600 system and GERP22 system), B\u2010scan ultrasonography, and an MRI study (Siemens Impact 1.0 MR system) were acquired. MR examinations were performed using spin\u2010echo (SE) T1, T2, and PD\u2010weighted axial and sagittal or coronal images with 3 mm slice thickness. Plain x\u2010ray film, 3 mm slice thickness CT scans and B\u2010scan ultrasonography all failed to demonstrate any tiny intraocular FBs in these two patients, whereas MRI revealed tiny ferromagnetic FBs due to their characteristic magnetic susceptibility artifact. A ferromagnetic FB was found in the vitreous body of each patient, which were 0.375 \u00d7 0.3 \u00d7 0.15 mm and 0.5 \u00d7 0.4 \u00d7 0.2 mm, respectively, and there was no evidence of MR\u2010induced damage. We suggest that tiny ferromagnetic fragments with a diameter below 0.5 mm, which are too small to be visualized by x\u2010ray plain films and CT images, may be visualized on MR images. These tiny ferromagnetic particles may not be large enough to cause ocular damage during a 1.0T MRI examination. MRI may be a useful tool in the evaluation of tiny intraocular ferromagnetic FBs if other imaging modalities such as plain s\u2010ray, CT scan, and ultrasonography failed to do so. Further evaluation with a large\u2010scale study (in vitro and in vivo animal study) for the safety of detecting tiny (&lt;0.5 mm) intraocular ferromagnetic particles is warranted. J. Magn. Reson. Imaging 2009;29:704\u2013707. \u00a9 2009 Wiley\u2010Liss, Inc.<\/jats:p>","DOI":"10.1002\/jmri.21637","type":"journal-article","created":{"date-parts":[[2010,7,9]],"date-time":"2010-07-09T15:49:52Z","timestamp":1278690592000},"page":"704-707","source":"Crossref","is-referenced-by-count":33,"title":["Tiny ferromagnetic intraocular foreign bodies detected by magnetic resonance imaging: A report of two cases"],"prefix":"10.1002","volume":"29","author":[{"given":"Yong","family":"Zhang","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingliang","family":"Cheng","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jie","family":"Bai","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cuiping","family":"Ren","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yan","family":"Zhang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xuemei","family":"Gao","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaolin","family":"Cui","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yun Jun","family":"Yang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2009,2,25]]},"reference":[{"key":"e_1_2_4_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9394(99)00435-3"},{"key":"e_1_2_4_3_2","doi-asserted-by":"publisher","DOI":"10.1007\/BF00169098"},{"key":"e_1_2_4_4_2","doi-asserted-by":"publisher","DOI":"10.1001\/archopht.1987.01060040121048"},{"key":"e_1_2_4_5_2","doi-asserted-by":"publisher","DOI":"10.1148\/radiographics.15.6.8577963"},{"key":"e_1_2_4_6_2","doi-asserted-by":"publisher","DOI":"10.2214\/ajr.148.5.1001"},{"key":"e_1_2_4_7_2","doi-asserted-by":"publisher","DOI":"10.1097\/00006982-199414050-00002"},{"key":"e_1_2_4_8_2","doi-asserted-by":"publisher","DOI":"10.1097\/00006982-199313020-00003"},{"key":"e_1_2_4_9_2","first-page":"41","article-title":"The role of interleukin\u20102 in iron powder\u2010induced intraocular inflammation","volume":"1","author":"Li XM","year":"2005","journal-title":"Zhonghua Yan Ke Za Zhi"},{"key":"e_1_2_4_10_2","first-page":"160","article-title":"Empirical study of retina iron rust on rabbits","volume":"11","author":"Yan YN","year":"1993","journal-title":"Chin Ophthal Res"},{"key":"e_1_2_4_11_2","first-page":"1347","article-title":"Comparison of the diagnostic value of four imaging examination methods in localization the loboundary intraocular foreign body","volume":"6","author":"Huang XW","year":"2006","journal-title":"Int J Ophthalmol"},{"key":"e_1_2_4_12_2","first-page":"520","article-title":"Combining diagnosis of IOFB and complications with multiple image\u2010related methods","volume":"39","author":"Zhu Y","year":"2003","journal-title":"Chin J Ophthalmol"},{"key":"e_1_2_4_13_2","first-page":"64","article-title":"CT diagnosis of intraocular foreign bodies","volume":"12","author":"Cao QX","year":"2002","journal-title":"J Med Imaging"},{"key":"e_1_2_4_14_2","first-page":"25","article-title":"Localization of intraocular foreign bodies by computed tomography","volume":"11","author":"Gaster RN","year":"1980","journal-title":"Ophthal Surg"},{"key":"e_1_2_4_15_2","first-page":"2","article-title":"CT diagnosis of intraocular foreign bodies","volume":"25","author":"Ma SY","year":"1989","journal-title":"Chin J Ophthalmol"},{"key":"e_1_2_4_16_2","doi-asserted-by":"publisher","DOI":"10.1055\/s-2005-858763"},{"key":"e_1_2_4_17_2","first-page":"502","article-title":"Assessment of intraocular foreign bodies by helical\u2010CT multiplanar imaging","volume":"1","author":"Papadopoulos A","year":"2001","journal-title":"Eur Radiol"},{"key":"e_1_2_4_18_2","doi-asserted-by":"publisher","DOI":"10.1007\/s001170050407"},{"key":"e_1_2_4_19_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0161-6420(98)99038-8"},{"key":"e_1_2_4_20_2","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9394(88)90305-4"},{"key":"e_1_2_4_21_2","doi-asserted-by":"publisher","DOI":"10.1097\/00004424-199204000-00010"},{"key":"e_1_2_4_22_2","first-page":"426","article-title":"Cost utility analysis of radiographic screening for an orbital foreign body before MR imaging","volume":"21","author":"Seidenwurm DJ","year":"2000","journal-title":"Am J Neuroradiol"}],"container-title":["Journal of Magnetic Resonance Imaging"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjmri.21637","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jmri.21637","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,10]],"date-time":"2023-10-10T00:31:44Z","timestamp":1696897904000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jmri.21637"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2009,2,25]]},"references-count":21,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2009,3]]}},"alternative-id":["10.1002\/jmri.21637"],"URL":"https:\/\/doi.org\/10.1002\/jmri.21637","archive":["Portico"],"relation":{},"ISSN":["1053-1807","1522-2586"],"issn-type":[{"value":"1053-1807","type":"print"},{"value":"1522-2586","type":"electronic"}],"subject":[],"published":{"date-parts":[[2009,2,25]]}}}