X-ray or gamma ray systems or devices – Beam control – Collimator
Patent
1992-02-05
1992-12-08
Howell, Janice A.
X-ray or gamma ray systems or devices
Beam control
Collimator
378145, 378 19, 378150, G21K 104
Patent
active
051704250
ABSTRACT:
An x-ray diagnostics installation has a primary radiation diaphragm disposed in the beam path of an x-ray tube, with the x-rays attenuated by an examination subject being processed through an image intensifier video chain, which includes an image memory. The primary radiation diaphragm is provided with sensors which generate an electrical signal corresponding to the position of the individual diaphragm components of the primary radiation diaphragm, these signals being supplied to a processing stage in the image intensifier video chain. The processing stage acts on the data stored in the image memory so that the effect of the diaphragm can be simulated, and included in the displayed image. The processing stage includes a control computer connected to the sensors, and a simulation circuit for simulating the effect of the primary radiation diaphragm.
REFERENCES:
patent: 4360731 (1982-11-01), Fink et al.
patent: 4442538 (1984-04-01), Haendle
patent: 4473843 (1984-09-01), Bishop et al.
patent: 4831260 (1989-05-01), DiBianca
patent: 4935946 (1990-06-01), Hefter et al.
patent: 4947416 (1990-08-01), McFaul et al.
Howell Janice A.
Siemens Aktiengesellschaft
Wong Don
LandOfFree
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