{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2024,8,7]],"date-time":"2024-08-07T04:53:08Z","timestamp":1723006388357},"reference-count":0,"publisher":"Undersea and Hyperbaric Medical Society (UHMS)","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["UHM"],"published-print":{"date-parts":[[2021,1,1]]},"abstract":"<jats:p>Venous gas emboli (VGE) are often quantified as a marker of decompression stress on echocardiograms. Bubblecounting has been proposed as an easy to learn method, but remains time-consuming, rendering large dataset analysis impractical. Computer automation of VGE counting following this method has therefore been suggested as a means to eliminate rater bias and save time. A necessary step for this automation relies on the selection of a frame during late ventricular diastole (LVD) for each cardiac cycle of the recording. Since electrocardiograms (ECG) are not always recorded in field experiments, here we propose a fully automated method for LVD frame selection based on regional intensity minimization. The algorithm is tested on 20 previously acquired echocardiography recordings (from the original bubble-counting publication), half of which were acquired at rest (Rest) and the other half after leg flexions (Flex). From the 7,140 frames analyzed, sensitivity was found to be 0.913 [95% CI: 0.875-0.940] and specificity 0.997 [95% CI: 0.996-0.998]. The method\u2019s performance is also compared to that of random chance selection and found to perform significantly better (p&lt;0.0001). No trend in algorithm performance was found with respect to VGE counts, and no significant difference was found between Flex and Rest (p&gt;0.05). In conclusion, full automation of LVD frame selection for the purpose of bubble counting in postdive echocardiography has been established with excellent accuracy, although we caution that high quality acquisitions remain paramount in retaining high reliability.<\/jats:p>","DOI":"10.22462\/01.03.2021.9","type":"journal-article","created":{"date-parts":[[2021,2,25]],"date-time":"2021-02-25T23:11:27Z","timestamp":1614294687000},"page":"73-80","source":"Crossref","is-referenced-by-count":0,"title":["A fully automated method for late ventricular diastole frame selection in post-dive echocardiography without ECG gating"],"prefix":"10.22462","volume":"48","author":[{"name":"Joint Dept of Biomedical Engineering, The Univ of North Carolina at Chapel Hill and North Carolina State University, U.S.","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eric","family":"Markley","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David Q.","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Joint Dept of Biomedical Engineering, The Univ of North Carolina at Chapel Hill and North Carolina State University, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Germonpr\u00e9","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Center for Hyperbaric Oxygen Therapy, Military Hospital Brussels, Belgium","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Environmental & Occupational (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), Brussels, Belgium","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Costantino","family":"Balestra","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Center for Hyperbaric Oxygen Therapy, Military Hospital Brussels, Belgium","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Environmental & Occupational (Integrative) Physiology Laboratory, Haute Ecole Bruxelles-Brabant (HE2B), Brussels, Belgium","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Frauke","family":"Tillmans","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Research Division, Divers Alert Network, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Petar J.","family":"Denoble","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Research Division, Divers Alert Network, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John J.","family":"Freiberger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Center for Hyperbaric Medicine and Environmental Physiology, Duke University, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Richard E.","family":"Moon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Center for Hyperbaric Medicine and Environmental Physiology, Duke University, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul A.","family":"Dayton","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Joint Dept of Biomedical Engineering, The Univ of North Carolina at Chapel Hill and North Carolina State University, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Virginie","family":"Papadopoulou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"name":"Joint Dept of Biomedical Engineering, The Univ of North Carolina at Chapel Hill and North Carolina State University, U.S.","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"9754","published-online":{"date-parts":[[2021,1,1]]},"container-title":["Undersea and Hyperbaric Medicine"],"original-title":[],"deposited":{"date-parts":[[2022,10,28]],"date-time":"2022-10-28T18:52:35Z","timestamp":1666983155000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.uhms.org\/uhm-search\/uhm-journal-volume-48-2021\/number-1\/a-fully-automated-method-for-late-ventricular-diastole-frame-selection-in-post-dive-echocardiography-without-ecg-gating.html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,1,1]]},"references-count":0,"journal-issue":{"issue":"1","published-online":{"date-parts":[[2021,1,1]]},"published-print":{"date-parts":[[2021,1,1]]}},"URL":"https:\/\/doi.org\/10.22462\/01.03.2021.9","relation":{},"ISSN":["1066-2936"],"issn-type":[{"type":"print","value":"1066-2936"}],"subject":[],"published":{"date-parts":[[2021,1,1]]}}}