What is the intensity of an x-ray beam created with one HVL of filtration if the unfiltered intensity is 50 uGy?

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Multiple Choice

What is the intensity of an x-ray beam created with one HVL of filtration if the unfiltered intensity is 50 uGy?

Explanation:
One HVL means the beam is reduced to 50% of its previous intensity. HVL, or half-value layer, is the thickness of filtration that cuts the intensity in half. So the intensity after one HVL is half of the unfiltered value: 50 uGy × 0.5 = 25 uGy. The other numbers would imply less reduction or an increase in intensity, which isn’t what one HVL does.

One HVL means the beam is reduced to 50% of its previous intensity. HVL, or half-value layer, is the thickness of filtration that cuts the intensity in half. So the intensity after one HVL is half of the unfiltered value: 50 uGy × 0.5 = 25 uGy. The other numbers would imply less reduction or an increase in intensity, which isn’t what one HVL does.

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