X-ray or gamma ray systems or devices – Accessory
Patent
1994-03-25
1995-08-29
Porta, David P.
X-ray or gamma ray systems or devices
Accessory
378 97, 378108, A61B 1000
Patent
active
054467802
ABSTRACT:
An x-ray apparatus includes an x-ray tube having a focus, the x-ray tube being contained in a housing and the housing having a mechanical distance-measuring device attache thereto. The mechanical distance-measuring device is suitable for obtaining a measured value which exactly corresponds to the focus-to-skin distance for all types of examinations. The mechanical distance-measuring device, which may be a tape measure, is connected to an electrical signal generator which converts the mechanically measured value into a corresponding electrical signal.
REFERENCES:
patent: 3502878 (1970-03-01), Stewart
patent: 4027166 (1977-05-01), Aichinger et al.
patent: 4060733 (1977-11-01), Franke et al.
patent: 4896343 (1990-01-01), Saunders
Aichinger Horst
Schmitt Thomas
Porta David P.
Siemens Aktiengesellschaft
Wong Don
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