Radiologic Technology Review
Questions and Answers Latest Update
100% Pass
What is a "phantom" in radiology?
✔✔ A model used to simulate human tissues for training, testing, and calibration of imaging
equipment.
What controls the quantity of X-rays produced?
✔✔ mAs (milliampere-seconds).
What is the role of kVp in an X-ray exam?
✔✔ It determines the energy and penetrating ability of the X-ray beam.
What does the term "latent image" refer to?
✔✔ The invisible image on a detector or film before processing.
What is the significance of the anode heel effect?
✔✔ It causes uneven distribution of X-rays, with more intensity on the cathode side.
1
,What is the function of a radiographic grid?
✔✔ To reduce scatter radiation and improve image contrast.
What happens when X-rays interact with dense structures like bone?
✔✔ They are absorbed more, creating bright or white areas on the image.
What is the purpose of automatic exposure control (AEC)?
✔✔ To automatically terminate exposure when the correct amount of radiation is detected.
What does the term "spatial resolution" mean in imaging?
✔✔ The ability to visualize small details clearly on an image.
Why is collimation important in radiography?
✔✔ It limits the X-ray beam size, reducing patient exposure and improving image quality.
What is the role of a dosimeter?
✔✔ To measure and record radiation exposure for radiologic personnel.
2
, What is the inverse square law in radiology?
✔✔ Radiation intensity decreases as the square of the distance from the source increases.
What is scatter radiation?
✔✔ Radiation that is deflected in different directions after interacting with matter.
What does the term "contrast media" refer to?
✔✔ Substances used to enhance visibility of specific body structures in imaging.
Why is ALARA essential in radiologic practice?
✔✔ To minimize radiation exposure to patients and staff.
What is fluoroscopy commonly used for?
✔✔ Real-time imaging of moving body structures.
What is the function of beam filtration?
✔✔ To remove low-energy X-rays and reduce patient dose.
3
Questions and Answers Latest Update
100% Pass
What is a "phantom" in radiology?
✔✔ A model used to simulate human tissues for training, testing, and calibration of imaging
equipment.
What controls the quantity of X-rays produced?
✔✔ mAs (milliampere-seconds).
What is the role of kVp in an X-ray exam?
✔✔ It determines the energy and penetrating ability of the X-ray beam.
What does the term "latent image" refer to?
✔✔ The invisible image on a detector or film before processing.
What is the significance of the anode heel effect?
✔✔ It causes uneven distribution of X-rays, with more intensity on the cathode side.
1
,What is the function of a radiographic grid?
✔✔ To reduce scatter radiation and improve image contrast.
What happens when X-rays interact with dense structures like bone?
✔✔ They are absorbed more, creating bright or white areas on the image.
What is the purpose of automatic exposure control (AEC)?
✔✔ To automatically terminate exposure when the correct amount of radiation is detected.
What does the term "spatial resolution" mean in imaging?
✔✔ The ability to visualize small details clearly on an image.
Why is collimation important in radiography?
✔✔ It limits the X-ray beam size, reducing patient exposure and improving image quality.
What is the role of a dosimeter?
✔✔ To measure and record radiation exposure for radiologic personnel.
2
, What is the inverse square law in radiology?
✔✔ Radiation intensity decreases as the square of the distance from the source increases.
What is scatter radiation?
✔✔ Radiation that is deflected in different directions after interacting with matter.
What does the term "contrast media" refer to?
✔✔ Substances used to enhance visibility of specific body structures in imaging.
Why is ALARA essential in radiologic practice?
✔✔ To minimize radiation exposure to patients and staff.
What is fluoroscopy commonly used for?
✔✔ Real-time imaging of moving body structures.
What is the function of beam filtration?
✔✔ To remove low-energy X-rays and reduce patient dose.
3
