WorksheetsChapter 11: Equipment Design for Radiation Protection
Total questions: 15
Worksheet time: 13mins
Modern imaging equipment is designed to maximize _______ and minimize radiation dose. (Fill in the blank)
image quality
cost
noise
exposure time
Every part of the machine includes _______ to protect both the patient and the technologist.
safety features
decorative lights
extra wires
colorful stickers
Which of the following is NOT a function of tube housing in imaging equipment?
A) Prevents radiation from leaking out
B) Narrows the x-ray beam
C) Leakage must be < 1 mGy/hr at 1 meter
D) Protects the technologist
What is the maximum allowable leakage from tube housing at 1 meter?
< 1 mGy/hr
< 5 mGy/hr
< 10 mGy/hr
< 0.1 mGy/hr
Collimation in imaging equipment helps to:
Narrow the x-ray beam
Reduce patient dose
Improve image quality
All of the above
Light-localizing collimators help position the patient properly.
True
False
What is the minimum filtration required for 70+ kVp in imaging equipment? (Fill in the blank)
2.5 mm Al equivalent
1.0 mm Al equivalent
0.5 mm Al equivalent
3.5 mm Al equivalent
Positive Beam Limitation (PBL) automatically adjusts the beam to the size of the image receptor.
True
False
Lead aprons used for protection must have at least _______ mm Pb equivalent.
0.5
0.2
1.0
0.1
What is the purpose of dosimeters (e.g., TLD, OSL badges)?
To track worker exposure.
To measure temperature changes.
To monitor air humidity.
To detect sound levels.
At what level must technologists wear dosimeters?
What does the Dead-Man Exposure Switch require to operate?
Constant pressure; it stops exposure if released.
A key to be turned and held during exposure.
A timed delay before activation.
A foot pedal to be pressed intermittently.
What do exposure indicators show?
What must be true about X-ray output in terms of reproducibility and linearity?
X-ray output must be consistent and predictable.
X-ray output must vary randomly with each exposure.
X-ray output should decrease over time for accuracy.
X-ray output must be unpredictable to ensure safety.
The radiographer should stand at least _________ feet away from the patient and x-ray tube when making an exposure using mobile radiographic equipment
2
6
5
4
