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Based on a questionnaire to the clinics, Monte Carlo method was used to estimate organ doses in International Commission on Radiological Protection standard phantom for prostate, bladder, rectum and femoral head. The results show that doses from cone beam computed tomography imaging have reduced compared to earlier studies and are between 3.6 and 34.5\u00a0mGy per image for the above-mentioned organs and for normal sized patients. There still is room for further optimization of the patient exposure, as many centres use the default imaging parameters, and the length of the imaged region may not be optimal for the purpose.<\/jats:p>","DOI":"10.1093\/rpd\/ncae133","type":"journal-article","created":{"date-parts":[[2024,6,3]],"date-time":"2024-06-03T16:40:03Z","timestamp":1717432803000},"page":"842-847","source":"Crossref","is-referenced-by-count":3,"title":["Cone beam CT doses in radiotherapy patient positioning in Finland\u2014prostate treatments"],"prefix":"10.1093","volume":"200","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4471-6938","authenticated-orcid":false,"given":"Teemu","family":"Siiskonen","sequence":"first","affiliation":[{"name":"Department of Physics, University of Helsinki , P.O. 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