NEW MODIFIED LMRT
STATE EXAM PREP| LMRT STATE REVIEW EXAM
PRACTICE QUESTIONS WITH CORRECT 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. -- ANSWER--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% -- ANSWER--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
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,B.) Faster speed IR system
C.) It does not matter; the IR system speed does not affect the patient dose. --
ANSWER-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 -- ANSWER--
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 -- ANSWER--2 and 3 only
How does x-ray beam restriction minimize patient exposure?
A.) it limits radiation fog
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,B.) It limits the radiation field to the area of interest
C.) It limits the effect of patient motion
D.) It limits repeat exposure -- ANSWER--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 -- ANSWER--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 -- ANSWER--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
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, C.) 2.5mm Al Equiv
D.) 3.5mm Al Equiv -- ANSWER--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 -- ANSWER--Time, Distance, and
Shielding
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--
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
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STATE EXAM PREP| LMRT STATE REVIEW EXAM
PRACTICE QUESTIONS WITH CORRECT 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. -- ANSWER--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% -- ANSWER--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
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,B.) Faster speed IR system
C.) It does not matter; the IR system speed does not affect the patient dose. --
ANSWER-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 -- ANSWER--
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 -- ANSWER--2 and 3 only
How does x-ray beam restriction minimize patient exposure?
A.) it limits radiation fog
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,B.) It limits the radiation field to the area of interest
C.) It limits the effect of patient motion
D.) It limits repeat exposure -- ANSWER--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 -- ANSWER--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 -- ANSWER--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
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, C.) 2.5mm Al Equiv
D.) 3.5mm Al Equiv -- ANSWER--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 -- ANSWER--Time, Distance, and
Shielding
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--
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
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