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Breast dosimetry using high-resolution voxel phantoms
Vise andre og tillknytning
2005 (engelsk)Inngår i: Radiation Protection Dosimetry, ISSN 0144-8420, E-ISSN 1742-3406, Vol. 114, nr 1-3, s. 359-363Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A computer model of X-ray mammography has been developed, which uses quasi-realistic high-resolution voxel phantoms to simulate the breast. The phantoms have 400 μm voxels and simulate the three-dimensional distributions of adipose and fibroglandular tissues, Cooper's ligaments, ducts and skin and allow the estimation of dose to individual tissues. Calculations of the incident air kerma to mean glandular dose conversion factor, g, were made using a Mo/Mo spectrum at 28 kV for eight phantoms in the thickness range 40-80 mm and of varying glandularity. The values differed from standard tabulations used for breast dosimetry by up to 43%, because of the different spatial distribution of glandular tissue within the breast. To study this further, additional voxel phantoms were constructed, which gave variations of between 9 and 59% compared with standard values. For accurate breast dosimetry, it is therefore very important to take the distribution of glandular tissues into account. © The Author 2005. Published by Oxford University Press. All rights reserved.

sted, utgiver, år, opplag, sider
2005. Vol. 114, nr 1-3, s. 359-363
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Identifikatorer
URN: urn:nbn:se:liu:diva-28498DOI: 10.1093/rpd/nch510Lokal ID: 13647OAI: oai:DiVA.org:liu-28498DiVA, id: diva2:249308
Tilgjengelig fra: 2009-10-09 Laget: 2009-10-09 Sist oppdatert: 2017-12-13

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Sandborg, MichaelUllman, GustafAlm-Carlsson, Gudrun

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