{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T17:26:59Z","timestamp":1783013219872,"version":"3.54.6"},"reference-count":42,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T00:00:00Z","timestamp":1774742400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T00:00:00Z","timestamp":1774742400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100008002","name":"Vancouver Coastal Health Research Institute","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100008002","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100023558","name":"Providence Health Care Research Institute","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100023558","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100015803","name":"BC Cancer Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100015803","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["aapm.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Applied Clin Med Phys"],"published-print":{"date-parts":[[2026,4]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Research on cardiac radioablation (CR) has highlighted the importance of accounting for respiratory\u2010induced motion during treatment, promoting investigation into methods to reduce its impact.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>To investigate the efficacy of abdominal compression (AC) to reduce respiratory\u2010induced motion for CR patients by quantifying their respiratory\u2010induced motion under AC and free breathing (FB) conditions.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and materials<\/jats:title>\n                    <jats:p>Nine patients were imaged with 5 Hz bi\u2010planar fluoroscopy on the Vero4DRT linear accelerator for 15\u201320 seconds under both AC and FB conditions in preparation for CR. As the soft tissue target is not visible on bi\u2010planar X\u2010ray images, the implantable cardioverter defibrillator (ICD) lead tip was used as a motion surrogate. The position of the ICD lead tip was tracked and triangulated in each bi\u2010planar image frame, with the respiratory component of motion extracted using a lowpass filter. Properties of respiratory\u2010induced motion were quantified including the average (across patient breaths) peak\u2010to\u2010peak motion extent, the mean total 3D magnitude of displacement, and the standard deviation of motion for each patient.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The average (95% CI) extent of RV lead respiratory\u2010induced motion was [3.0 (1.1, 5.0), 2.8 (1.6, 4.1), 7.0 (4.2, 9.7)] mm under FB and [2.1 (1.4, 2.8), 2.7 (1.7, 3.8), 4.7 (3.5, 5.9)] mm under AC in the [right\u2013left, anterior\u2013posterior, inferior\u2013superior] directions. Eight out of nine patients had a reduction in the mean respiratory\u2010induced total 3D displacement under AC, with an average ( STD) across patients of (3.2  1.7) mm under FB and (2.2  0.8) mm under AC. Averaged across patients, the standard deviation (95% CI) of respiratory\u2010induced motion was [1.3 (0.5, 2.0), 1.2 (0.7, 1.6), 3.1 (1.7, 4.5)] mm under FB and [0.9 (0.6, 1.3), 1.2 (0.6, 1.8), 2.0 (1.3, 2.7)] mm under AC.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>For eight out of nine CR patients investigated, the respiratory\u2010induced RV lead motion was reduced when using AC compared to FB conditions.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/acm2.70561","type":"journal-article","created":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T13:06:06Z","timestamp":1774789566000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The role of abdominal compression in the reduction of respiratory motion for cardiac radioablation"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6688-3801","authenticated-orcid":false,"given":"Jakob","family":"Marshall","sequence":"first","affiliation":[{"name":"Department of Physics University of British Columbia  Vancouver British Columbia Canada"},{"name":"Medical Physics, BC Cancer  Vancouver British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0546-7681","authenticated-orcid":false,"given":"Alanah","family":"Bergman","sequence":"additional","affiliation":[{"name":"Medical Physics, BC Cancer  Vancouver British Columbia Canada"},{"name":"Department of Surgery Division of Radiation Oncology and Experimental Radiotherapeutics University of British Columbia  Vancouver British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9243-9672","authenticated-orcid":false,"given":"Tania","family":"Karan","sequence":"additional","affiliation":[{"name":"Medical Physics, BC Cancer  Vancouver British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marc W.","family":"Deyell","sequence":"additional","affiliation":[{"name":"Centre for Cardiovascular Innovation and Division of Cardiology University of British Columbia  Vancouver British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Devin","family":"Schellenberg","sequence":"additional","affiliation":[{"name":"Radiation Oncology, BC Cancer  Surrey British Columbia Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven","family":"Thomas","sequence":"additional","affiliation":[{"name":"Medical Physics, BC Cancer  Vancouver British Columbia Canada"},{"name":"Department of Surgery 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