PCP paper published in Medical Physics

Congrats to Ken Taguchi and colleagues on the publication of their journal paper entitled, “Model-based pulse pileup and charge sharing compensation for photon counting detectors: A simulation study.” The model-based algorithm is called PCP for Pulse-pileup and Charge sharing comPensation. The paper can be accessed from here (it is an open access, thanks to JHU).

The main contribution of this paper is as follows.

(1) This is the first model-based method to compensate for both charge sharing and pulse pileup simultaneously.

(2) The study showed that 15% count-loss would result in significant biases when the spectral distortion due to pulse pileup is left uncorrected for. It is not sufficient to take into account a loss of count due to pulse pileup and spectral distortion due to charge sharing.

(3) The biases observed in a small portion of sinograms will be spread to the entire CT images via the image reconstruction process.