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LMRT STATE EXAM EXPERT VERIFIED EXACT EXAM QUESTIONS AND ANSWERS /ALREADY GRADED A+
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LMRT STATE EXAM EXPERT VERIFIED EXACT EXAM QUESTIONS AND ANSWERS /ALREADY GRADED A+
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Which of the following statements are correct regarding the linkbetween 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. 2 and 3 only
Which of the following changes in kilovoltage (KVP) will result in
the greatest reduction of patient dose, when milliamperage-
seconds (mAs) is adjusted to compensate for the dosage?
A.) Decrease kVp by 30%
B.) Decrease kVp by 15%
C.) Increase kVp by 15%
D.) Increase kVp by 30% 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
patient dose. Faster speed IR system
What is the primary purpose of using gonad shields during
radiography?
A.) Reduce the likelihood of genetic changes
B.) Reduce likelihood of somatic effects
C.) Protect patient modesty
D.) Demonstrate the location of the gonads in the image Reduce
the likelihood of genetic changes
Which one of the following are types of gonad shields?
,1. Aperture
2. Contact
3. Shadow
A.) 1 and 2 only
B.) 1 and 3 only
C.) 2 and 3 only
D.) 1, 2, and 3
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 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 exposure
D.) equipment malfunction Repeat exposure
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.) optimizing the kVp Clearly instructing patients
How does x-ray beam restriction minimize patient exposure?
A.) it limits radiation fog
B.) It limits the radiation field to the area of interest
C.) It limits the effect of patient motion
D.) It limits repeat exposure
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.) Sheild Collimator
How does filtration reduce patient exposure?
A.) Removes the shorter-wavelength photons
B.) Removes longer wavelength photons
C.) Reduces the size of the radiation field
D.) Reduces the time of exposure Removes longer wavelength
photons
What is the National Council on Radiation Protection and
Measurements (NCRP) recommendation for the amount of total
filtration?
A.) 0.5mm aluminum equivalent ( AL Equiv)
B.) 1.5mm AL Equiv
C.) 2.5mm Al Equiv
D.) 3.5mm Al Equiv
2.5mm Al Equiv
What are the three principal methods used to protect limited
operators from unnecessary radiation exposure?
A. Time, Distance, and Shielding
B.) Time, Distance, and Collimation
C.) Distance, Collimation, and Shielding
D.) Time, Collimation, and Filtration Time, Distance, and
Shielding
Which of the following is not a type of personnel radiation
shielding?
A.) Apron
B.) Glove
C.) Thyroid Shield
D.) Shadow Shadow
Personnel shielding must be worn on the rare occasion during
which the limited operator may need to remain in the radiographic
room during the exposure to assist the patient in maintaining the
proper position . What is the source of the greatest radiation
hazard under this circumstance?
A.) Off-focus radiation
B.) Leakage Radiation
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