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Open Access Green as soon as Postprint is submitted to ZB.
Local organ dose conversion coefficients for angiographic examinations of coronary arteries.
Phys. Med. Biol. 52, 4393-4408 (2007)
New organ dose conversion coefficients for coronary angiographic interventions are presented, as well as dose distributions and resulting maximal local dose conversion coefficients in the relevant organs. For the Monte Carlo based simulations, voxel models of the human anatomy were employed which represent the average Caucasian adult man and woman as defined by the International Commission on Radiological Protection. In the 21 investigated projections, the mean organ dose conversion coefficients vary from a few 0.01 to 2 mGy(Gy cm2)-1, depending on the projections. However, especially in portions of the lungs and the active bone marrow, the conversion coefficients can locally amount up to 10 mGy(Gy cm2)-1, which is half the average conversion coefficient of the skin at the field entrance. In addition to the dose conversion coefficients, the dependence of the patient dose on the projection has been estimated. It could be shown that the patient doses are highest for left anterior oblique views with strong caudal or cranial orientation. Nevertheless, for a large range of image-intensifier positions no significant dose differences could be found.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
organ dose; coronary arteries; angiography; voxel phantoms; dose distribution
ISSN (print) / ISBN
0031-9155
e-ISSN
1361-6560
Journal
Physics in Medicine and Biology
Quellenangaben
Volume: 52,
Issue: 15,
Pages: 4393-4408
Publisher
Institute of Physics Publishing (IOP)
Publishing Place
Bristol
Reviewing status
Peer reviewed
Institute(s)
Institute of Radiation Protection (ISS)