Radiation imaging device with an array of image cells

Abstract

A radiation imaging device includes an image cell array having an array of detector cells and an array of image cell circuits. Each image cell circuit is associated with a respective detector cell and includes counting. The image cell circuits may include threshold circuitry configured to receive signals generated in the respective detector cell and having values dependent on the incident radiation energy. The counting circuitry may be coupled to the threshold circuitry.

What is claimed is:  
     
         1 . A radiation imaging device comprising an image cell array including an array of detector cells which generate charge in response to incident radiation and an array of image cell circuits, each image cell circuit being associated with a respective detector cell, said image cell circuit comprising counting circuitry coupled to said respective detector cell and configured to count plural radiation hits incident on said respective detector cell.