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The protocol comprised both 4D CE-MRA and REACT (navigator-triggering, Compressed SENSE factor 10, nominal scan time 02:54\u00a0min, and reconstructed voxel size 0.78\u2009\u00d7\u20090.78\u2009\u00d7\u20090.85   \u00a0mm<jats:sup>3<\/jats:sup>). Two radiologists independently evaluated 14 abdominal artery segments for stenoses, anatomical variants, and vascular findings (aortic dissection, abdominal aorta aneurysms and its branches). Subjective image quality was assessed using a 4-point Likert scale (1\u2009=\u2009non-diagnostic, 4\u2009=\u2009excellent).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>REACT had a total acquisition time of 5:36\u2009\u00b1\u200900:40\u00a0min, while 4D CE-MRA showed a total acquisition time (including the native scan and bolus tracking sequence) of 3:45\u2009\u00b1\u200900:59\u00a0min (p\u2009=\u20090.001). Considering 4D CE-MRA as the reference standard, REACT achieved a sensitivity of 87.5% and specificity of 100.0% for relevant (\u2265\u200950%) stenosis while detecting 89.5% of all vascular findings other than stenosis. For all vessels combined, subjective vessel quality was slightly higher in 4D CE-MRA (3.0 [IQR: 2.0; 4.0.]; P\u2009=\u20090.040), although comparable to REACT (3.0 [IQR: 2.0; 3.5]).<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>In a short scan time of about 5\u00a0min, REACT provides good diagnostic performance for detection of relevant stenoses, variants, and vascular findings of the abdominal arteries, while yielding to 4D CE-MRA comparable image quality.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s00261-024-04639-4","type":"journal-article","created":{"date-parts":[[2024,10,28]],"date-time":"2024-10-28T18:02:33Z","timestamp":1730138553000},"page":"1887-1898","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Non-contrast-enhanced MR-angiography of the abdominal arteries: intraindividual comparison between relaxation-enhanced angiography without contrast and triggering (REACT) and 4D contrast-enhanced MR-angiography"],"prefix":"10.1007","volume":"50","author":[{"given":"Carsten","family":"Gietzen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jan Paul","family":"Janssen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lukas","family":"G\u00f6rtz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kenan","family":"Kaya","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thorsten","family":"Gietzen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Roman Johannes","family":"Gertz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Henry","family":"Pennig","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Katharina","family":"Seuthe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Maintz","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Philip S.","family":"Rauen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thorsten","family":"Persigehl","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kilian","family":"Weiss","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lenhard","family":"Pennig","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,10,28]]},"reference":[{"key":"4639_CR1","doi-asserted-by":"publisher","first-page":"3501","DOI":"10.1007\/s00261-021-03001-2","volume":"46","author":"S Lennartz","year":"2021","unstructured":"Lennartz S, Laukamp KR, Tandon Y, et al (2021) Abdominal vessel depiction on virtual triphasic spectral detector CT: initial clinical experience. 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