{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,5]],"date-time":"2026-11-05T07:14:24Z","timestamp":1793862864681,"version":"4.6.1"},"reference-count":31,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2015,1,10]],"date-time":"2015-01-10T00:00:00Z","timestamp":1420848000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Prinses Beatrix Fonds"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Muscle and Nerve"],"published-print":{"date-parts":[[2015,2]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p><jats:italic>Introduction<\/jats:italic>: In 10\u201320% of patients with subacute\u2010onset idiopathic inflammatory myopathy (IIM), muscle biopsy is normal or shows nonspecific findings. MRI can be used as a triage test before muscle biopsy and as an add\u2010on test if the biopsy is nondiagnostic. <jats:italic>Methods<\/jats:italic>: MRI scans of skeletal muscles and muscle biopsies were evaluated prospectively in 48 patients suspected to have IIM. The interpretations of MRI and muscle biopsy were compared with the definite diagnosis (based on European Neuromuscular Centre criteria and response to corticosteroids). <jats:italic>Results<\/jats:italic>: The false negative rate (FNR) of all muscle biopsies was 0.23. Biopsies of a muscle showing hyperintensity on MRI (as triage test) had an FNR of 0.19. The result of MRI as an add\u2010on test in patients with a nondiagnostic muscle biopsy decreased the FNR from 0.23 to 0.06. <jats:italic>Conclusions<\/jats:italic>: We recommend both MRI and muscle biopsy in patients suspected of having IIM. <jats:italic>Muscle Nerve<\/jats:italic> <jats:bold>51<\/jats:bold>: 253\u2013258, 2015<\/jats:p>","DOI":"10.1002\/mus.24307","type":"journal-article","created":{"date-parts":[[2014,6,3]],"date-time":"2014-06-03T09:44:37Z","timestamp":1401788677000},"page":"253-258","source":"Crossref","is-referenced-by-count":120,"title":["Combining MRI and muscle biopsy improves diagnostic accuracy in subacute\u2010onset idiopathic inflammatory myopathy"],"prefix":"10.1002","volume":"51","author":[{"given":"Janneke","family":"Van De Vlekkert","sequence":"first","affiliation":[{"name":"Department of Neurology Academic Medical Center Meibergdreef 9, 1105 AZ Amsterdam The 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