In the presence of the anode heel effect, which edge of the field typically has higher exposure?

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Prepare for the RTBC X-ray Tube and Components Test with our detailed study resources. Access multiple-choice questions, hints, and explanations to enhance your understanding and maximize your test performance.

Multiple Choice

In the presence of the anode heel effect, which edge of the field typically has higher exposure?

Explanation:
Anode heel effect arises from the angled target in the X-ray tube. Photons emitted toward the anode side have to traverse more of the anode material before exiting, so they are more attenuated. Photons toward the cathode side pass through less material and exit with higher intensity. So the edge near the cathode receives higher exposure than the edge near the anode, with the center in between. The effect is stronger with larger field sizes and steeper anode angles, and clinicians often place the thicker part of the anatomy toward the cathode side to help balance exposure.

Anode heel effect arises from the angled target in the X-ray tube. Photons emitted toward the anode side have to traverse more of the anode material before exiting, so they are more attenuated. Photons toward the cathode side pass through less material and exit with higher intensity. So the edge near the cathode receives higher exposure than the edge near the anode, with the center in between. The effect is stronger with larger field sizes and steeper anode angles, and clinicians often place the thicker part of the anatomy toward the cathode side to help balance exposure.

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