GXMO Module 1 Quiz: Questions and
Answers Latest Version Graded A+
What is scatter radiation?
✔✔ Radiation that is deflected from its original path during interaction with matter.
Why is patient positioning important in radiology?
✔✔ To ensure accurate images and minimize repeat exposures.
What does the term "radiopaque" mean?
✔✔ A substance that does not allow X-rays to pass through and appears white on the image.
What does "radiolucent" mean?
✔✔ A substance that allows X-rays to pass through and appears dark on the image.
What is the purpose of a grid in radiology?
✔✔ To reduce scatter radiation and improve image contrast.
1
, How does distance affect radiation exposure?
✔✔ Increasing the distance from the source reduces exposure.
What is the inverse square law in radiology?
✔✔ Radiation intensity decreases with the square of the distance from the source.
Why is film-screen combination still used in some facilities?
✔✔ It provides high-resolution images and is cost-effective for certain applications.
What is the difference between digital and analog radiography?
✔✔ Digital radiography uses electronic sensors, while analog uses film to capture images.
What are the three cardinal principles of radiation protection?
✔✔ Time, distance, and shielding.
How can radiographers minimize patient dose during procedures?
✔✔ By using proper techniques, collimation, and shielding.
2
Answers Latest Version Graded A+
What is scatter radiation?
✔✔ Radiation that is deflected from its original path during interaction with matter.
Why is patient positioning important in radiology?
✔✔ To ensure accurate images and minimize repeat exposures.
What does the term "radiopaque" mean?
✔✔ A substance that does not allow X-rays to pass through and appears white on the image.
What does "radiolucent" mean?
✔✔ A substance that allows X-rays to pass through and appears dark on the image.
What is the purpose of a grid in radiology?
✔✔ To reduce scatter radiation and improve image contrast.
1
, How does distance affect radiation exposure?
✔✔ Increasing the distance from the source reduces exposure.
What is the inverse square law in radiology?
✔✔ Radiation intensity decreases with the square of the distance from the source.
Why is film-screen combination still used in some facilities?
✔✔ It provides high-resolution images and is cost-effective for certain applications.
What is the difference between digital and analog radiography?
✔✔ Digital radiography uses electronic sensors, while analog uses film to capture images.
What are the three cardinal principles of radiation protection?
✔✔ Time, distance, and shielding.
How can radiographers minimize patient dose during procedures?
✔✔ By using proper techniques, collimation, and shielding.
2
