LMRT STATE EXAM 2023-2024 EXPERT VERIFIED
EXACT EXAM QUESTIONS AND ANSWERS
Which of the following statements 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.
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
C.) Scattered Radiation from the patient
D.) Back scatter radiation from the IR
Scattered Radiation from the patient
EXACT EXAM QUESTIONS AND ANSWERS
Which of the following statements 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.
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
C.) Scattered Radiation from the patient
D.) Back scatter radiation from the IR
Scattered Radiation from the patient
