Systems and methods for controlling pileup losses in computed tomography

A computed tomography (CT) medical imaging system comprising:

• an x-ray source configured to deliver x-rays to an object as the x-ray source is rotated about the object;
• a photon-counting detector system comprising a pixel or a plurality of detector pixels configured to receive the x-rays passing through the object and generate a photon-counting signal in response to receiving a photon of the x-rays having passed through the object;
• a charge-integration system configured sum a charge associated with each photon received at a given detector pixel of the plurality of pixels to generate a charge integration signal, wherein the charge-integration system is configured to receive a summed charge signal incorporating a local charge and at least one adjacent pixel from the photon-counting detector and integrate the summed charge signal over time to generate the charge integration signal;
• a processor configured to:
• utilize the charge integration signal to correct a count of the photon-counting signal for pileup-induced count losses to create a corrected photon-counting signal;
• and
• reconstruct an image of the object using the corrected photon-counting signal.