| 摘要 |
Disclosed herein is a detector (100), comprising: a plurality of pixels (150), each pixel (150) configured to count numbers of X-ray photons incident thereon whose energy (151) falls in a plurality of bins (153A,153B,153C), within a period of time; and wherein the detector (100) is configured to add the numbers of X-ray photons for the bins (153A,153B,153C) of the same energy range counted by all the pixels (150). Each of the pixels (150) may comprise an analog-to-digital converter (ADC) (306) configured to digitize an analog signal representing the energy (151) of an incident X-ray photon into a digital signal. The pixels (150) may be able to operate in parallel. Each of the pixels (150) may be able to measure its dark current, such as before or concurrently with each X-ray photon incident thereon. |
