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LXMO Core Module Exam Questions With Correct Answers
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LXMO Core Module Exam Questions With Correct Answers Which of the following statement are correct regarding the link between radiation dose and genetic effects? 1. The link has been demonstrated in human studies. 2. The link has been demonstrated in animal studies. 3. Increased risk to humans...

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  • August 17, 2024
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  • 2024/2025
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BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM



LXMO Core Module Exam Questions
With Correct Answers


Which of the following statement are correct regarding the link between radiation dose and
genetic effects?
1. The link has been demonstrated in human studies.
2. The link has been demonstrated in animal studies.

3. Increased risk to humans cannot be predicted with respect to an individual. - answer✔✔2 and
3 only
Which of the following changes in kVp will result in the greatest reduction of patient dose, when
milliampere-seconds (mAs) is adjusted to compensate for the change?
A. Decrease kVp by 30%
B. Decrease kVp by 15%
C. Increase kVp by 15%

D. Increase kVp by 30% - answer✔✔D. Increase kVp by 30%
Which of the following image receptor (IR) system speeds will result in the lowest patient dose?
A. Slower-speed IR system
B. Faster-speed IR system

C. It does not matter; the IR system speed does not affect the pt. dose. - answer✔✔B. Faster-
speed IR system
What is the primary purpose of using gonad shields during radiography?
A. Reduce the likelihood of genetic effects
B. Reduce the likelihood of somatic effects
C. Protect patient modesty

, BRIGHTSTARS EXAM STUDY SOLUTIONS 8/15/2024 2:05 PM
D. Demonstrate the location of the gonads in the image - answer✔✔A. Reduce the likelihood of
genetic effects
Which of the following are types of gonad shields?
1. Aperture
2. Contact

3. Shadow - answer✔✔2 and 3 only
When should gonad shielding be used?
A. For all patients
B. For all procedures
C. When the gonads are within 10 cm of the radiation field

D. When the gonads are within 5 cm of the radiation field - answer✔✔D. When the gonads are
within 5 cm of the radiation field
The greatest cause of unnecessary radiation to patients that can be controlled by the limited
operator is:
A. Patient condition
B. Patient size
C. Repeat exposures

D. Equipment malfunction - answer✔✔C. Repeat exposures
The limited operator can reduce repeat exposures by:
A. accepting marginal images
B. clearly instructing patients
C. Increasing the source-image receptor distance (SID)

D. It limits repeat exposures - answer✔✔B. Clearly instructing patients
How does x-ray beam restriction minimize patient exposure?
A. It limits fog radiation
B. It limits the radiation field to the area of interest
C. It limits the effect of patient motion

D. It limits repeat exposures - answer✔✔B. It limits the radiation field to the area of interest
What is the device that allows the limited operator to vary the size of the radiation field?

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