Purpose An imaging facility with a diverse fleet of CT scanners faces considerable
challenges when propagating CT protocols with consistent image quality and patient dose
across scanner makes and models. Although some protocol parameters can comfortably
remain constant among scanners (eg, tube voltage, gantry rotation time), the automatic
exposure control (AEC) parameter, which selects the overall mA level during tube current
modulation, is difficult to match among scanners, especially from different CT manufacturers …