X-ray source for mammography

Details X-ray source for mammography X-ray source for mammography

1994-03-21

1994-12-20

Porta, David P.

X-ray or gamma ray systems or devices

Source

Target

378 37, 378156, H01J 3508, G21K 300, A61B 604

Patent

active

053751582

ABSTRACT:
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.

REFERENCES:
patent: 3515874 (1970-06-01), Bens et al.
patent: 4477921 (1984-10-01), Armini et al.
UCRL-5200-92-10.11.12, Energy and Technology Review, Oct.-Nov.-Dec. 1992, "Digital Mammograph", C. M. Logan, pp. 27-36.

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