Method for the compensation of image disturbances in the...

Details Method for the compensation of image disturbances in the... Method for the compensation of image disturbances in the...

2006-07-04

2006-07-04

Ho, Allen C. (Department: 2882)

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

C378S154000, C250S505100

Reexamination Certificate

active

07070328

ABSTRACT:
A method is for the compensation of image disturbances in the course of a radiation image recording caused by a defocusing of an antiscatter grid, arranged in the beam path between a beam source and a digital radiation image receiver and focused with respect to a specific distance from the focus of the beam source. Such image disturbances are caused by a defocusing-dictated attenuation of the primary radiation incident on the radiation image receiver. A solid-state image detector includes radiation-sensitive pixels arranged in matrix form and a device for pixelwise amplification of the radiation-dependent signals. In the method, at least some of the signals supplied in pixelwise fashion are amplified by an amplifying device in a manner dependent on the actual distance of the antiscatter grid from the focus.

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