Increasing the thickness of filtration has what effect on a patient's entrance skin dose (ESD)? Assume no other technical factors are changed.

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Prepare for the Clover Learning X-ray Production and Safety Test. Sharpen your skills with flashcards, multiple choice, and detailed explanations. Ace your exam!

Multiple Choice

Increasing the thickness of filtration has what effect on a patient's entrance skin dose (ESD)? Assume no other technical factors are changed.

Explanation:
Increasing the filtration thickness hardens the X-ray beam by removing more low-energy photons. Those low-energy photons would mostly deposit their energy in the superficial skin, so filtering them out reduces the amount of energy delivered at the entrance. The photons that remain are higher energy and more penetrating, depositing less energy in the skin surface. If exposure factors are otherwise unchanged, this combination lowers the number of photons reaching the skin and reduces the dose at the entrance, so the entrance skin dose decreases.

Increasing the filtration thickness hardens the X-ray beam by removing more low-energy photons. Those low-energy photons would mostly deposit their energy in the superficial skin, so filtering them out reduces the amount of energy delivered at the entrance. The photons that remain are higher energy and more penetrating, depositing less energy in the skin surface. If exposure factors are otherwise unchanged, this combination lowers the number of photons reaching the skin and reduces the dose at the entrance, so the entrance skin dose decreases.

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