Scatter compensation in an X-ray system

Details Scatter compensation in an X-ray system Scatter compensation in an X-ray system

2005-11-17

2010-02-09

Thomas, Courtney (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S207000, C378S901000

Reexamination Certificate

active

07660381

ABSTRACT:
Scatter compensation is achieved in an X-ray imaging system by providing collimation means in the form of shutters (12) to collimate the primary X-ray beam (1) such that the radiation (8) transmitted through a subject (4) to be imaged is incident substantially centrally on the active part (14) of an image detector (3), so as to define an active border (14b), in respect of which scatter levels can be measured. An electrical signal (104) representative of the scatter level is subtracted from the electrical signal (7) representative of the radiation (8) transmitted through the subject, to obtain a scatter-compensated image signal (106).

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patent: 2003/0198314 (2003-10-01), Saito
patent: 2004/0120457 (2004-06-01), Karellas et al.

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