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Cumulative radiation exposure has been associated with long term health consequences from both dose dependent deterministic harm and increased risk of developing adverse events in a\u00a0non-dose dependant manner i.e. stochastic harm.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Objective<\/jats:title>\n            <jats:p>The objective was to calculate cumulative radiation exposure in the acute phase after aSAH.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Design, Setting, Participants, Main Outcome Measures<\/jats:title>\n            <jats:p>Single centre retrospective, observational study of consecutive adult patients admitted to the ICU for management of aSAH over five years. Organ and effective radiation doses were determined using institution specific conversion coefficients based on scanner radiation output metrics for all computed tomography imaging and fluoroscopy examinations. Calculated patient doses for the duration of the hospital admission were determined using National Cancer Institute radiation dosimetry tools.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Results<\/jats:title>\n            <jats:p>A\u00a0total of 276 patients met the inclusion criteria; 180 females (65%), mean (SD) age\u00a056 (13) years. There were 222 (80%) patients who survived to hospital discharge. The median [IQR] effective cumulative radiation dose was 17.7 [9.7\u201330.5] mSv. Twenty-one patients (8%) received an effective dose &gt;\u202f50\u202fmSV consistent with potentially harmful ionising radiation exposure. In 162 patients (59%), the equivalent radiation dose to the lens of the eye exceeded the 500\u202fmSv threshold for radiation induced damage.<\/jats:p>\n          <\/jats:sec>\n          <jats:sec>\n            <jats:title>Conclusion<\/jats:title>\n            <jats:p>Survivors of aSAH are exposed to high levels of medical radiation. The eyes are particularly at risk with most patients exposed to levels known to induce lens damage. This highlights the importance of strategies to reduce incidental and cumulative medical radiation exposure in this population.<\/jats:p>\n          <\/jats:sec>","DOI":"10.1007\/s00062-025-01513-8","type":"journal-article","created":{"date-parts":[[2025,4,2]],"date-time":"2025-04-02T10:34:12Z","timestamp":1743590052000},"page":"559-564","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Cumulative Radiation Exposure Post Aneurysmal Subarachnoid Haemorrhage"],"prefix":"10.1007","volume":"35","author":[{"given":"Shreepad H.","family":"Asundi","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mark P.","family":"Plummer","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Krishnaswamy","family":"Sundararajan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gerry","family":"O\u2019Callaghan","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Palash","family":"Kar","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alistair","family":"Jukes","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chris M.","family":"Boyd","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weitong","family":"Chen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chang","family":"Dong","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5748-3881","authenticated-orcid":false,"given":"Timothy","family":"Webber","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2025,3,31]]},"reference":[{"issue":"3","key":"1513_CR1","first-page":"562","volume":"81","author":"A Dur\u00e1n","year":"2013","unstructured":"Dur\u00e1n\u00a0A, Hian\u00a0SK, Miller\u00a0DL, Le Heron\u00a0J, Padovani\u00a0R, Vano\u00a0E. 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This study was performed in line with the principles of the Declaration of Helsinki. Approval for the project was granted by the Central Adelaide Local Health Network Human Research Ethics Committee (CALHN HREC) with reference number 17482. A\u00a0waiver of consent was granted.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical standards"}}]}}