LXMO Core Module Questions & Answer 100%
Verified
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 ...
LXMO Core Module Questions & Answer 100%
Verified
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.
Correct 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% Correct 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
,LXMO Core Module Questions & Answer 100%
Verified
C. It does not matter; the IR system speed does not affect the pt. dose.
Correct 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
D. Demonstrate the location of the gonads in the image Correct answer-A.
Reduce the likelihood of genetic effects
Which of the following are types of gonad shields?
1. Aperture
2. Contact
3. Shadow Correct answer-2 and 3 only
When should gonad shielding be used?
A. For all patients
B. For all procedures
,LXMO Core Module Questions & Answer 100%
Verified
C. When the gonads are within 10 cm of the radiation field
D. When the gonads are within 5 cm of the radiation field Correct 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 Correct 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 Correct answer-B. Clearly instructing patients
How does x-ray beam restriction minimize patient exposure?
, LXMO Core Module Questions & Answer 100%
Verified
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 Correct 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?
A. Collimator
B. Detent
C. Filter
D. Shield Correct answer-A. Collimator
How does filtration reduce patient exposure?
A. Removes shorter-wavelength photons
B. Removes longer-wavelength photons
C. Reduces the size of the radiation field
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