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RAD 101
FINAL STUDY
| Question | Answer |
|---|---|
| What does ALARA stand for? | As Low As Reasonably Achievable. It means keeping radiation exposure as low as reasonably possible while still getting a diagnostic image. |
| . What are the three basic ways to reduce radiation exposure? | Time, distance, and shielding |
| What happens when you increase your distance from a radiation source? | Your radiation exposure decreases |
| What is direct radiation action? | Radiation directly interacts with important structures inside the cell, such as DNA. |
| What is indirect radiation action? | Radiation interacts with water in the body and produces free radicals that can damage cells. |
| What is a deterministic effect? | A radiation effect that has a threshold dose. Once the threshold is exceeded, the severity generally increases as the dose increases. |
| What is a stochastic effect? | An effect where the probability of occurring increases with radiation dose. The severity does not depend on the dose. |
| What is the prodromal stage of acute radiation syndrome? | The early stage when symptoms such as nausea and vomiting can occur |
| What is the latent stage? | A period when the initial symptoms may temporarily decrease or disappear. |
| What is an OSL dosimeter used for? | It monitors a radiographer's occupational radiation exposure. |
| What is a TLD? | A thermoluminescent dosimeter used to measure radiation exposure |
| What is a Geiger-Müller counter used for? | It detects and measures radiation or radioactive material. |
| What is the difference between a personnel monitor and a survey instrument? | A personnel monitor measures the radiation dose received by a worker, while a survey instrument measures radiation in an area or around a source. |
| What is the cathode? | The negative side of the X-ray tube. It contains the filament and produces electrons. |
| What is the anode? | The positive side of the X-ray tube. It attracts electrons from the cathode. |
| Why is an X-ray tube considered a diode? | Because it has two electrodes, a negative cathode and a positive anode, that allow current to flow in one direction. |
| What is filtration? | Filtration removes low-energy X-ray photons from the beam, reducing unnecessary patient skin exposure. |
Created by:
wickenburg1
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