Patent ID: 6408049
Filing Date: 2002-06-18
Classification: G01T

Abstract:
An x-ray imaging system for imaging an object by transmitting x-rays, said imaging system comprising a collimator placed between a first x-ray detector and a second x-ray detector, said collimator being disposed so as to reduce scatter components of total x-ray signals incident on said first x-ray detector, said total x-ray signal comprising a primary signal and a scatter signal component such that x-rays incident on said second detector comprise collimated rays representative of direct path x-ray signals passing from an x-ray source through said object to be imaged, through said first detector, and through said collimator; said x-ray imaging system being adapted to generate a scatter correction signal from data obtained from said first detector and said second detector for imaging data generated from said first detector;said first x-ray detector further comprising a first detector scintillator, said scintillator having a plurality of reduced absorption regions distributed thereon, said reduced absorption regions being arranged to allow transmission of a greater percentage of x-rays there through than other portions of said first detector scintillator; wherein the collimator collimates the primary signals passing through the reduced absorption regions, and the second detector is disposed to detect the collimated, primary signals passing through the reduced absorption regions.