{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,23]],"date-time":"2026-01-23T09:19:30Z","timestamp":1769159970596,"version":"3.49.0"},"reference-count":20,"publisher":"Springer Science and Business Media LLC","issue":"8","license":[{"start":{"date-parts":[[2022,2,11]],"date-time":"2022-02-11T00:00:00Z","timestamp":1644537600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2022,2,11]],"date-time":"2022-02-11T00:00:00Z","timestamp":1644537600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100006447","name":"University of Zurich","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100006447","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Skeletal Radiol"],"published-print":{"date-parts":[[2022,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Objective<\/jats:title>\n                <jats:p>This study aims to evaluate the image quality of virtual non-contrast (VNC) images calculated from dual-energy CT shoulder arthrography (DECT-A) and their ability to detect periosteal calcifications and intraarticular loose bodies.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Materials and methods<\/jats:title>\n                <jats:p>In 129 shoulders of 123 patients, DECT arthrography (80\u00a0kV\/140\u00a0kV) was performed with diluted iodinated contrast material (80\u00a0mg\/ml). VNC images were calculated with image postprocessing. VNC image quality (1\u2009=\u2009worst, 5\u2009=\u2009best), dose parameters, and CT numbers (intraarticular iodine, muscle, VNC joint fluid density) were assessed. Image contrast (iodine\/muscle) and percentage of iodine removal were calculated. Two independent readers evaluated VNC and DECT-A images for periosteal calcifications and intraarticular loose bodies, and diagnostic confidence (1\u2009=\u2009low, 4\u2009=\u2009very high) was assessed.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>VNC images (129\/129) were of good quality (median 4 (3\u20134)), and the mean effective dose of DECT-A scans was 2.21\u00a0mSv (\u00b1\u20091.0\u00a0mSv). CT numbers of iodine, muscle, and VNC joint fluid density were mean 1017.6 HU (\u00b1\u2009251.6 HU), 64.6 HU (\u00b1\u20098.2 HU), and 85.3 HU (\u00b1\u200939.5 HU), respectively. Image contrast was mean 953.1 HU (\u00b1\u2009251 HU) on DECT-A and 31.3 HU (\u00b1\u200932.3 HU) on VNC images. Iodine removal on VNC images was 91% on average. No difference was observed in the detection of periosteal calcifications between VNC (<jats:italic>n<\/jats:italic>\u2009=\u200925) and DECT-A images (<jats:italic>n<\/jats:italic>\u2009=\u200921) (<jats:italic>p<\/jats:italic>\u2009=\u20090.29), while the detection of intraarticular loose bodies was superior on VNC images (14 vs. 7; <jats:italic>p<\/jats:italic>\u2009=\u20090.02). Diagnostic confidence was higher on VNC images for both periosteal calcifications (median 3 (3\u20133) vs. 3 (3\u20133); <jats:italic>p<\/jats:italic>\u2009=\u20090.009) and intraarticular loose bodies (median 3 (3\u20134) vs. 3 (3\u20133); <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.001).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>VNC images from DECT shoulder arthrography are superior to DECT-A images for the detection of intraarticular loose bodies and increase the confidence in detecting periosteal calcifications.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1007\/s00256-022-04007-7","type":"journal-article","created":{"date-parts":[[2022,2,11]],"date-time":"2022-02-11T05:06:04Z","timestamp":1644555964000},"page":"1639-1647","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Virtual non-contrast images calculated from dual-energy CT shoulder arthrography improve the detection of intraarticular loose bodies"],"prefix":"10.1007","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2833-5753","authenticated-orcid":false,"given":"Christoph","family":"Stern","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dimitri N.","family":"Graf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Samy","family":"Bouaicha","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karl","family":"Wieser","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andrea B.","family":"Rosskopf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reto","family":"Sutter","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2022,2,11]]},"reference":[{"key":"4007_CR1","doi-asserted-by":"publisher","first-page":"471","DOI":"10.1053\/jars.2000.5042","volume":"16","author":"DM Weinstein","year":"2000","unstructured":"Weinstein DM, Bucchieri JS, Pollock RG, Flatow EL, Bigliani LU. 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