Questions and Answers
What is the purpose of using a rectangular collimator between the round position-indicating device and the patient?
To result in a smaller, less divergent beam and a smaller volume of tissue irradiated
Why is the use of leaded aprons with thyroid collars especially important for children?
Children are more sensitive to radiation than adults
What may happen when the apron or collar are poorly positioned?
They may appear in the image as a cone-shaped radiopaque artifact
What should the operator do if no barrier is available during an x-ray exposure?
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What does Radiation Biology study?
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Study Notes
X-ray Safety and Equipment
- A rectangular collimator is used between the round position-indicating device and the patient to restrict the x-ray beam to the area of interest, reducing patient exposure and scattered radiation.
Protective Gear
- Leaded aprons with thyroid collars are especially important for children because they are more susceptible to radiation damage due to their smaller body size and higher cell division rate.
- Poorly positioned aprons or collars can result in inadequate protection, increasing the risk of radiation exposure to sensitive areas.
Emergency Procedures
- If no barrier is available during an x-ray exposure, the operator should stand as far away from the x-ray source as possible, behind any available shielding, and minimize their exposure time.
Radiation Biology
- Radiation Biology studies the effects of ionizing radiation on living organisms, examining the interactions between radiation and biological systems.
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