{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,14]],"date-time":"2026-08-14T04:20:17Z","timestamp":1786681217822,"version":"build-2736575974"},"reference-count":26,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2013,9,30]],"date-time":"2013-09-30T00:00:00Z","timestamp":1380499200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Clin Physio Funct Imaging"],"published-print":{"date-parts":[[2014,5]]},"abstract":"Summary<\/jats:title>Magnetic resonance imaging (MRI<\/jats:styled-content>) has commonly been applied to determine tendon cross\u2010sectional area (CSA<\/jats:styled-content>) and length either to measure structural changes or to normalize mechanical measurements to stress and strain. The ability to reproduce CSA<\/jats:styled-content> measurements on MRI<\/jats:styled-content> images has been reported, but the accuracy in relation to actual tendon dimensions has never been investigated. The purpose of this study was to compare tendon CSA<\/jats:styled-content> measured by MRI<\/jats:styled-content> with that measured in vitro<\/jats:italic> with the mould casting technique. The knee of a horse was MRI<\/jats:styled-content>\u2010scanned with 1.5 and 3 tesla, and two examiners measured the patellar tendon CSA<\/jats:styled-content>. Thereafter, the patellar tendon of the horse was completely dissected and embedded in an alginate cast. The CSA<\/jats:styled-content> of the embedded tendon was measured directly by optical imaging of the cast impression. 1.5 tesla grey tendon CSA<\/jats:styled-content> and 3 tesla grey tendon CSA<\/jats:styled-content> were 16.5% and 13.2% lower than the mould tendon CSA<\/jats:styled-content>, respectively. Also, 3 tesla tendon CSA<\/jats:styled-content>, based on the red\u2010green border on the National Institute of Health (NIH<\/jats:styled-content>) colour scale, was lower than the mould tendon CSA<\/jats:styled-content> by 2.8%. The typical error between examiners was below 2% for all the measured CSA<\/jats:styled-content>. The typical error between examiners was below 2% for all the measured CSA<\/jats:styled-content>. These data show that measuring tendon CSA<\/jats:styled-content> on the grey\u2010scale MRI<\/jats:styled-content> images is associated with an underestimation, but by optimizing the measurement using a 3 tesla MRI<\/jats:styled-content> and the appropriate NIH<\/jats:styled-content> colour scale, this underestimation could be reduced to 2.8% compared with the direct measurements on the mould.<\/jats:p>","DOI":"10.1111\/cpf.12086","type":"journal-article","created":{"date-parts":[[2013,10,12]],"date-time":"2013-10-12T01:48:46Z","timestamp":1381542526000},"page":"237-241","source":"Crossref","is-referenced-by-count":22,"title":["Accuracy of MRI<\/scp> technique in measuring tendon cross\u2010sectional area"],"prefix":"10.1111","volume":"34","author":[{"given":"C.","family":"Coupp\u00e9","sequence":"first","affiliation":[{"name":"Faculty of Health Sciences Institute of Sports Medicine Bispebjerg Hospital and Center for Healthy Aging University of Copenhagen Copenhagen NV Denmark"},{"name":"Department of Physical Therapy Bispebjerg Hospital University of Copenhagen Copenhagen NV Denmark"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. 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