How would you investigate higher CT dose figures before changing a protocol?

Instruction: Choose a valid comparison, a targeted first intervention, and balancing measures that determine whether the change should be kept.

Context: A fictional dose dashboard groups all abdominal CTs together. Scanner A has higher figures than scanner B, but A handles more large patients and multiphase examinations. Management asks for the same reduction in exposure settings across both scanners. You can work with a medical physicist and lead radiographer on one initial project.

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Those two scanner averages are not yet a sound basis for changing settings. First I would compare like examinations: the same clinical task, similar patient size, and comparable coverage and phases. The physicist can help us interpret the recorded metrics and equipment differences; the broad label “abdominal CT” is not enough...

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