Integrated automatic exposure control for portal imaging in radi

Details Integrated automatic exposure control for portal imaging in radi Integrated automatic exposure control for portal imaging in radi

1998-10-13

2000-11-14

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Absorption

378 987, A61N 510

Patent

active

061480606

ABSTRACT:
Method and system aspects for integrated automatic exposure control for portal imaging in radiotherapy are described. In an exemplary method aspect, the method includes controlling scanning and blanking of a target of a camera pick-up tube to capture an initial image, and analyzing the initial image to establish an initial image intensity. The method further includes utilizing the initial image intensity to determine a time for scanning a next image, and combining a scan of the next image with the initial image to produce a portal image with a maximized signal to noise ratio.

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