RAD 370 Midterm Answers
What is the primary function of a radiographer?
The primary function is to produce high-quality diagnostic images using X-rays, CT, MRI, or other
imaging techniques.
How do X-rays interact with different tissues in the body?
X-rays are absorbed by denser tiss...
✓✓ The primary function is to produce high-quality diagnostic images using X-rays, CT, MRI, or other
imaging techniques.
How do X-rays interact with different tissues in the body?
✓✓ X-rays are absorbed by denser tissues like bones and pass through less dense tissues like muscles
and organs.
What does ALARA stand for in radiology?
✓✓ ALARA stands for "As Low As Reasonably Achievable," referring to minimizing radiation exposure to
patients and staff.
Why is it important to use shielding during X-ray procedures?
✓✓ Shielding helps protect patients and staff from unnecessary exposure to radiation.
What is the role of contrast media in radiology?
✓✓ Contrast media enhance the visibility of specific organs or blood vessels on radiographic images.
How can a radiographer ensure patient safety during an imaging procedure?
✓✓ A radiographer ensures patient safety by using proper shielding, positioning, and monitoring
radiation dose.
What does PACS stand for in medical imaging?
✓✓ PACS stands for Picture Archiving and Communication System, used to store and share digital
images.
What is the significance of collimation in radiography?
, ✓✓ Collimation reduces the size of the X-ray beam to limit radiation exposure and improve image
quality.
What is the purpose of a grid in radiography?
✓✓ A grid reduces scattered radiation, which helps produce clearer images.
Why is patient positioning critical in radiography?
✓✓ Proper positioning ensures that the targeted area is accurately imaged, reducing the need for
repeat exposures.
What is the difference between a CT scan and an MRI?
✓✓ A CT scan uses X-rays to create cross-sectional images, while MRI uses magnetic fields and radio
waves for detailed images of soft tissues.
What is fluoroscopy used for?
✓✓ Fluoroscopy provides real-time moving images of internal structures, often used during diagnostic
and therapeutic procedures.
What does the term "radiographic density" refer to?
✓✓ Radiographic density refers to the degree of darkening on a radiographic image, influenced by the
amount of radiation exposure.
Why is it important to follow infection control protocols in radiography?
✓✓ Infection control protocols prevent the spread of infections between patients and healthcare
workers during imaging procedures.
How does radiation exposure affect human tissues?
✓✓ High levels of radiation exposure can damage tissues, leading to burns, radiation sickness, or
increased cancer risk over time.
What is the purpose of using a lead apron during radiographic procedures?
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