X-ray apparatus with interchangeable filter and area dose...

Details X-ray apparatus with interchangeable filter and area dose... X-ray apparatus with interchangeable filter and area dose...

2005-02-08

2005-02-08

Ho, Allen C. (Department: 2882)

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

C378S108000, C378S156000, C378S157000, C250S252100

Reexamination Certificate

active

06851854

ABSTRACT:
An X-ray apparatus has a radiation source, an interchangeable radiation filter and an area dose measuring device having a measurement chamber with an allocated evaluation device for determining the area dose product on the basis of a measured signal provided by the measurement chamber. The measurement chamber is arranged preceding the filter in the beam path with reference to the radiation propagation direction. A detector recognizes the nature and/or the type of radiation filter that is currently inserted in the beam path. The evaluation device corrects the area dose product that is calculated from the measured signal from the measurement chamber on the basis of at least one filter-specific correction value that is selected as a result of the detection of the filter nature and/or type.

REFERENCES:
patent: 4051377 (1977-09-01), Kemner et al.
patent: 5019713 (1991-05-01), Schmidt
patent: 5396889 (1995-03-01), Ueda et al.
patent: 5619042 (1997-04-01), Hughes
patent: 5648765 (1997-07-01), Cresap et al.
patent: 6036362 (2000-03-01), Schmitt
patent: 6292537 (2001-09-01), Zimmermann
patent: 83 12 137 (1993-09-01), None
patent: 198 32 973 (2000-01-01), None
patent: 33 12 137.4 (2003-09-01), None

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