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Title: X-ray source for mammography

An x-ray source is described 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. 6 figures.
Inventors:
Issue Date:
OSTI Identifier:
6873099
Assignee:
University of California, Oakland, CA (United States) PTO; EDB-95-031544
Patent Number(s):
US 5375158; A
Application Number:
PPN: US 8-215980
Contract Number:
W-7405-ENG-48
Resource Relation:
Patent File Date: 21 Mar 1994
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; 07 ISOTOPES AND RADIATION SOURCES; BIOMEDICAL RADIOGRAPHY; X-RAY SOURCES; MAMMARY GLANDS; NEOPLASMS; DIAGNOSIS; DESIGN; BODY; DIAGNOSTIC TECHNIQUES; DISEASES; EQUIPMENT; GLANDS; MEDICINE; NUCLEAR MEDICINE; ORGANS; RADIATION SOURCES; RADIOLOGY; X-RAY EQUIPMENT 550602* -- Medicine-- External Radiation in Diagnostics-- (1980-); 070201 -- Radiation Sources-- Design, Fabrication & Operation