In Silico Comparison of Additive and Subtractive Charge Sharing Correction Algorithms at Medically Relevant Fluxes in Pixelated x-ray Photon Counting Multispectral Detectors

X-ray photon counting spectral imaging (x-CSI) is a technique of great interest to the medical research community due to the promised advantages over traditional energy integrating computed tomography (CT) approaches. These advantages include improved material decomposition and contrast quantification, as well as lower patient doses and the virtual elimination of electronic noise from reconstructed images. This technology could allow x-rays to be used for truly molecular imaging, provided good energy resolution and detection efficiencies can be achieved.