Discriminability of selected periods III‒IV elements in photon-counting computed tomography using a pixelated CdTe detector.

ABSTRACT: This study introduces a new approach in photon-counting computed tomography (CT) for elemental discrimination in periods III and IV of the periodic table of elements, which have not been covered by conventional methods that rely on the K-absorption edge of the target element. The present method features a pixelated CdTe detector with positional sensitivity and energy resolution. The authors changed its energy threshold level to determine the worthiness of counting an energy deposition by an X-ray photon in a pixel rather than changing the tube voltage in accordance with the target element as in the conventional method. The differences between the images are visualised on a scatter plot against various threshold levels, which clearly separates iron (atomic number 26) and copper (atomic numb

SUBMITTER: Shibuya K 

PROVIDER: S-EPMC12663250 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature