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fundamentals

Stack #4720813

QuestionAnswer
What does ALARA stand for? As Low As Reasonably Achievable.
What is the goal of the ALARA principle? To keep radiation exposure as low as reasonably achievable while still obtaining a diagnostic-quality image.
What are the three basic ways to reduce radiation exposure? Time, distance, and shielding.
How does time affect radiation exposure? The less time you spend around radiation, the less radiation exposure you receive.
How does distance reduce radiation exposure? Increasing your distance from the radiation source reduces your exposure.
How does shielding reduce radiation exposure? Shielding helps absorb or block radiation before it reaches the person.
What are common radiation shielding materials? Lead and other radiation-attenuating materials.
What is the purpose of protective devices such as lead aprons? To reduce unnecessary radiation exposure to personnel and others who may be near the X-ray source.
What is collimation? Limiting the X-ray beam to the area of anatomy being examined.
Why is proper collimation important? It reduces unnecessary radiation exposure and can improve image quality by reducing scatter.
Why should unnecessary repeat radiographs be avoided? Each repeat increases the patient's radiation exposure.
What can cause a radiograph to need a repeat? Poor positioning, incorrect exposure factors, motion, or image artifacts.
What are image artifacts? Objects or errors that appear on an image but are not part of the patient's anatomy.
Why can image artifacts be a problem? They can interfere with image interpretation and may hide important anatomy.
What should exposure factors be based on? The patient and the specific examination being performed.
Why is proper exposure factor selection important? It helps produce a diagnostic image while avoiding unnecessary radiation exposure.
Why might patient positioning need to be modified? The patient's condition, injury, pain, or ability to move may require a different position.
Created by: dee cortez
 

 



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