Shaped target for mammography

Details Shaped target for mammography Shaped target for mammography

1998-08-21

2000-12-19

Porta, David P.

X-ray or gamma ray systems or devices

Source

Target

378125, 378143, H01J 3510

Patent

active

061635936

ABSTRACT:
A method and apparatus for reducing off-focus radiation by modifying a shape of a rotating target anode disposed within a cathode grounded x-ray tube. The shape of the target anode body is modified such that surfaces of the target anode which could otherwise direct the greatest amounts of off-focus radiation toward an x-ray sensitive imaging device are angled or shortened so as to redirect the off-focus radiation away from a focal direction. These modifications to surfaces of the target anode body include modifying a front surface, a side or edge surface, and a back surface.

REFERENCES:
patent: 4052640 (1977-10-01), Hueschen et al.
patent: 5303281 (1994-04-01), Koller et al.
patent: 5511105 (1996-04-01), Knott

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