X-ray or gamma ray systems or devices – Beam control – Collimator
Patent
1986-11-10
1988-08-23
Church, Craig E.
X-ray or gamma ray systems or devices
Beam control
Collimator
378 41, 378150, 378158, 378162, G21K 104
Patent
active
047666030
ABSTRACT:
An aperture device defines X-ray beams emitted from X-ray focal points L and R spaced apart from each other along the first direction. This defining operation is performed along the first direction and a second direction crossing the first position, thereby shaping a rectangular X-ray radiation area. Blades defining the two edges of the X-ray beam along the first direction and blades defining two edges of the X-ray beam along the second direction are supported by engaging portions into which screw portions of screw rods are screwed and engaging portions slidably fitted around round portions of the screw rods, respectively. When the screw rods are rotated by activation of corresponding stepping motors, the corresponding engaging portions are moved parallel to the screw rods. The respective blades can be variably moved along the first or second direction, thereby forming an X-ray radiation area having any shape in any position.
REFERENCES:
patent: Re21964 (1941-12-01), Leishman
patent: 3228291 (1966-01-01), Miller
patent: 3287561 (1966-11-01), Ingles
patent: 3643095 (1972-02-01), Shuster
patent: 3947689 (1976-03-01), Wagner
patent: 424137460 (1979-01-01), Fitzsimmons et al.
patent: 4246488 (1981-01-01), Hura
patent: 4266139 (1981-05-01), Sportelli et al.
patent: 4392239 (1983-07-01), Wilkens
patent: 4393402 (1983-07-01), Keyes et al.
patent: 4400825 (1983-08-01), Boggi et al.
patent: 4445226 (1984-04-01), Brody
patent: 4464778 (1984-08-01), Goldmann
patent: 4472828 (1984-09-01), Ferlic
patent: 4482918 (1984-11-01), Keyes et al.
patent: 4489426 (1984-12-01), Grass et al.
patent: 4544949 (1985-10-01), Kurihara
"X-Ray Aperture Device", by Nishio et al., translation of Kokai No. 58-195545.
"Movable Aperture Device in Twin Focus X-Ray Tube Apparatus", by Seisaku-sho, translation of Kokai No. 59-699.
Koyama Katsuhiko
Nishio Kohsaku
Okabe Kanichi
Suzuki Hirotsugu
Church Craig E.
Freeman John C.
Kabushiki Kaisha Toshiba
LandOfFree
Aperture device of radiation diagnostic apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aperture device of radiation diagnostic apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture device of radiation diagnostic apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-840460