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Title: X-ray source for mammography

An x-ray source utilizing anode material which shifts the output spectrum to higher energy and thereby obtains higher penetrating ability for screening mammography application, than the currently utilized anode material. The currently used anode material (molybdenum) produces an energy x-ray spectrum of 17.5/19.6 keV, which using the anode material of this invention (e.g. silver, rhodium, and tungsten) the x-ray spectrum would be in the 20-35 keV region. Thus, the anode material of this invention provides for imaging of breasts with higher than average x-ray opacity without increase of the radiation dose, and thus reduces the risk of induced breast cancer due to the radiation dose administered for mammograms.
Inventors:
 [1]
  1. (Pleasanton, CA)
Issue Date:
OSTI Identifier:
869666
Assignee:
Regents of University of California (Oakland, CA) LLNL
Patent Number(s):
US 5375158
Contract Number:
W-7405-ENG-48
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Country of Publication:
United States
Language:
English
Subject:
x-ray; source; mammography; utilizing; anode; material; shifts; output; spectrum; energy; obtains; penetrating; ability; screening; application; currently; utilized; molybdenum; produces; 17; 19; kev; silver; rhodium; tungsten; 20-35; region; provides; imaging; breasts; average; opacity; increase; radiation; dose; reduces; risk; induced; breast; cancer; due; administered; mammograms; breast cancer; output spectrum; anode material; x-ray source; radiation dose; source utilizing; screening mammography; kev region; currently utilized; /378/