Exposure compensation apparatus for a radiographic equipment

Details Exposure compensation apparatus for a radiographic equipment Exposure compensation apparatus for a radiographic equipment

1990-03-13

1991-07-02

Westin, Edward P.

X-ray or gamma ray systems or devices

Beam control

378146, 378147, 378148, 378151, G21K 104

Patent

active

050293320

ABSTRACT:
An exposure compensation apparatus for use in a radiographic equipment to modulate local intensity of radiation. The exposure compensation apparatus comprises a detecting means to detect transmittance of radiation at a location of a radiated object, right-left reversion means to reverse a location arrangement of the transmittance data on a line of a predetermined direction, an averaging means to average a pair of the original and reversed transmittance data of a location to acquire an averaged transmittance, and a local intensity control means to control a local intensity compensation means of the radiographic equipment.

REFERENCES:
patent: 4868857 (1989-09-01), Dobbins, III
patent: 4882741 (1989-11-01), Brown
patent: 4953189 (1990-08-01), Wang

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