X-ray examination apparatus

Details X-ray examination apparatus X-ray examination apparatus

1995-05-25

1996-08-06

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Collimator

378 41, A61B 606

Patent

active

055442161

ABSTRACT:
An x-ray examination apparatus has an x-ray tube having an anode dish with a number of selectively activatable focal spots that are arranged such that all of the focal spots are intersected by a common straight line. In order to obtain an x-ray examination apparatus with a primary radiation diaphragm that can be shifted in a very simple way such that it is quickly brought into a position that is matched to the current focal spot generated on the anode dish, a mechanism is provided for shifting the primary radiation diaphragm along the straight line when switching from one focal spot to another.

REFERENCES:
patent: 3857039 (1974-12-01), Franke et al.
patent: 4641335 (1987-02-01), Hahn
patent: 4766603 (1988-08-01), Okabe et al.
patent: 5299250 (1994-03-01), Styrnol et al.

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