American Registry of Radiologic Technologists (ARRT) Practice Exam

Question: 1 / 400

As mAs is increased, what happens to the density?

Increases

When milliamperes per second (mAs) is increased, the density of the radiographic image also increases. This relationship is due to the direct effect that mAs has on the quantity of x-ray photons produced during an exposure.

Increasing mAs results in a greater number of x-ray photons being generated, which translates to a higher amount of radiation reaching the image receptor. This increased exposure leads to a darker image because more photons hit the receptor, resulting in a greater degree of blackening on the film or increased signal in digital imaging systems.

In practice, when adjusting mAs, radiologic technologists aim for the appropriate level of density to achieve optimal image quality. Therefore, understanding that an increase in mAs will lead to increased density is essential for effectively managing exposure factors in radiography.

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Decreases

Remains constant

Variable

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