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Asymptomatic adults without prior ankle trauma underwent dynamic ankle MRI at 3\u2009T using a balanced fast field-echo sequence (axial at the lateral malleolus) during active dorsiflexion\/plantarflexion. Three musculoskeletal radiologists rated five image-quality criteria (five-point Likert); agreement was quantified with Gwet\u2019s AC2 and Fleiss\u2019 \u03ba. The highest-rated sequence was analyzed. One musculoskeletal radiologist manually segmented the peroneus longus and peroneus brevis tendons; Euclidean centroid distance was computed per frame. For intra-rater analysis, an independent person randomly selected three volunteers; segmentation was repeated after 1 month, and reliability was assessed with the intraclass correlation coefficient (ICC) (2,1).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Ten volunteers aged 36.6\u2009\u00b1\u20097.8 years (mean\u2009\u00b1\u2009stasndard deviation) were included. Tendon motion was visualized in all volunteers with good image quality (median 4; mean 4.04\u20134.10). Agreement was strongest for retinaculum visibility and ability to follow tendon motion (AC2\u2009=\u20090.621 and 0.557, respectively). Centroid distance increased in dorsiflexion and decreased in plantarflexion (excursion 2.95\u20134.83\u2009mm). Intra-rater reliability was good (ICC\u2009=\u20090.85; 95% confidence interval 0.723\u20130.922;\n                      <jats:italic>p<\/jats:italic>\n                      \u2009&lt;\u20090.001).\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Dynamic MRI enabled reproducible, high-quality visualization and quantification of peroneal tendon motion during active ankle movement and warrants evaluation in suspected peroneal tendon instability.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Relevance statement<\/jats:title>\n                    <jats:p>Dynamic real-time 3-T MRI enables visualization and quantitative tracking of peroneal tendon motion during active ankle movement, and may complement static imaging in future studies of suspected peroneal tendon instability.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Key Points<\/jats:title>\n                    <jats:p>\n                      <jats:list list-type=\"bullet\">\n                        <jats:list-item>\n                          <jats:p>Real-time 3-T MRI showed peroneal tendon motion in all volunteers.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Image quality was consistently good for tracking tendons during ankle movement.<\/jats:p>\n                        <\/jats:list-item>\n                        <jats:list-item>\n                          <jats:p>Centroid-to-centroid distance between tendons was highly repeatable over time.<\/jats:p>\n                        <\/jats:list-item>\n                      <\/jats:list>\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s41747-026-00762-7","type":"journal-article","created":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T17:53:06Z","timestamp":1782409986000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Real-time 3-T MRI of peroneal tendon motion during active ankle movement: feasibility and image quality"],"prefix":"10.1186","volume":"10","author":[{"given":"Dan","family":"Mocanu","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chalermkwan Noinar","family":"Phoemsawang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Evin Ina","family":"Papalini","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katarzyna","family":"Bokwa-D\u0105browska","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Katarina Nilsson","family":"Helander","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isabella M.","family":"Bj\u00f6rkman-Burtscher","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0334-7232","authenticated-orcid":false,"given":"Pawel","family":"Szaro","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,6,25]]},"reference":[{"key":"762_CR1","doi-asserted-by":"publisher","first-page":"809","DOI":"10.1177\/107110070002101003","volume":"21","author":"BF DiGiovanni","year":"2000","unstructured":"DiGiovanni BF, Fraga CJ, Cohen BE, Shereff MJ (2000) Associated injuries found in chronic lateral ankle instability. 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