Computed Tomography Technologist Practice Exam

Question: 1 / 615

The relationship between mAs and dose is ___________?

Linear

The relationship between milliampere-seconds (mAs) and dose is linear, which means that as the mAs increases, the radiation dose also increases in a directly proportional manner. In practical terms, if you double the mAs, you effectively double the amount of radiation dose delivered to the patient. This direct relationship is crucial in radiology and computed tomography (CT) because it allows for predictable adjustments to the imaging parameters to achieve the necessary image quality while managing patient exposure.

In contrast, a quadratic relationship would imply that dose changes in relation to the square of changes in mAs, which is typically not the case in imaging dosimetry. A non-linear relationship suggests a more complex interaction, while a constant relationship would indicate that changes in mAs do not affect the dose at all, which is not supported by the principles governing radiation exposure.

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Quadratic

Non-linear

Constant

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