User evaluation of detector performance in clinical photon‐counting and energy‐integrating CT scanners using DICOM images

The <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:semantics><mml:msub><mml:mi>DQE</mml:mi> <mml:mn>0</mml:mn></mml:msub> <mml:annotation>${\rm DQE}_0$</mml:annotation></mml:semantics> </mml:math> of the PCD-CT and EID-CT detectors are comparable, with performance primarily limited by geometric efficiency rather than sensor absorption efficiency. Under clinically relevant conditions, pileup-induced count losses in the evaluated PCD-CT scanners are minimal and appear to be effectively corrected by the manufacturer.