Temporally oversampled CMOS X-ray photon counting sensor for low dose fluoroscopy

We present an x-ray quanta image sensor (XQIS) utilizing temporal oversampling and CMOS image sensor technology. The output of the XQIS is a binary bit frame with each bit representing the presence or absence of a detected x-ray photon. The bit frames are read out at very high rate (>1000fps) and a series or bit values are combined to form pixel values using digital frame integration. A system model analyzing the design parameter is presented and the component designs are evaluated in simulation.