Abstract:
:A semi-empirical theory has been derived that relates the aluminum equivalence of various materials used in diagnostic radiology to their attenuation coefficients. The dependence of the aluminum hardness (AHE) and attenuation (AAE) equivalent on the beam quality is described in terms of effective energy. This 'aluminum equivalence approach' (ALEAP) gives estimates of the aluminum equivalent, regardless of spectral shape, that are usually within +/- 5% except when absorption edges are involved. A reasonable definition for the AHE of K-edge filters is offered. Suggestions are made for methods of testing for compliance with standards and regulations.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Nagel HDdoi
10.1088/0031-9155/31/12/006subject
Has Abstractpub_date
1986-12-01 00:00:00pages
1381-99issue
12eissn
0031-9155issn
1361-6560journal_volume
31pub_type
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