caa a22 4500 397502869 CHVBK 20180308164536.0 cr unu---uuuuu 161202e19950101xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082580 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082580 Patient Doses and Radiation Risks in Film-Screen Mammography in Finland [Elektronische Daten] [A. Servomaa, T. Parviainen, T. Komppa] Screen-film mammography is the most sensitive method for the early detection of breast cancer. Breast doses in mammography should be measured for several reasons, especially for the evaluation of patient risk in a screening programme, but also for the assessment and comparison of imaging techniques and equipment performance. In this study, the factors affecting patient doses were assessed by making performance and patient dose measurements; about 50 mammographic units used for screening were included in the study. The lifetime risk as a function of age at exposure was calculated using the average glandular dose, the relative risk model shown in the BEIR V report, and the breast cancer mortality in Finland. The mean surface dose of a 4.5 cm thick phantom was 6.3 mGy, and the mean glandular dose 1.0 mGy. Analysis of the surface dose with respect to film optical density, relative speed of film processing, sensitivity of image receptors, and antiscatter grid showed that the mean surface dose could be decreased by more than 50%. For the screened age group of 50 to 59 years, the risk of exposure-induced death (REID) of breast cancer is about 1.4x10-6mSv-1, and the average loss of life expectancy due to the radiation-induced breast cancer deaths (LLE/REID) is about 9.5 years. Radiation Protection Dosimetry Servomaa A. aut Parviainen T. aut Komppa T. aut Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 449-454 0144-8420 57:1-4<449 1995 57 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082580 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082580 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Servomaa A. aut NATIONALLICENCE 700 1- Parviainen T. aut NATIONALLICENCE 700 1- Komppa T. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 57/1-4(1995-01-01), 449-454 0144-8420 57:1-4<449 1995 57 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford