LMRT STATE REVIEW QUESTIONS WITH DETAILED
VERIFIED ANSWERS A BRAND NEW!! /A+ GRADE
ASSURED
When radiation exposure occurs during pregnancy, the greatest risk of birth defects
occur when the exposure:
1. Exceeds 5 rad to the uterus
2. Occurs within the first trimester of pregnancy
3. Occurs within the third trimester of pregnancy
A.) 1 and 2 only
B.) 1 and 3 only
C.) 2 and 3 only
D.) 1, 2, and 3 - ANS... -1 and 2 only
At what kVp levels do Compton interactions occur?
A.) They do not occur with with x-ray exposure
B.) They occur below the diagnostic radiology kVp range
C.) They occur above the diagnostic radiology kVp range
D.) They occur throughout the diagnostic radiology kvp range. - ANS... -They
occur throughout the diagnostic radiology kvp range.
What is the principal source of scatter radiation in radiography?
A.) the tube housing
B.) The Patient
C.) The IR
D.) The Collimator - ANS... -The patient
What are the four essential elements required for x-ray production?
A.) A target, a vacuum, an electron source, and a high potential difference
B.) A target, an electron source, an inert gas environment, and a high potential
difference
C.) An electron source, a magnetic field, a resistance-free path, and a target.
,D.) An electron source, an electric field, a circuit and a target - ANS... -A target, a
vacuum, an electron source, and a high potential difference
The greatest portion of the x-ray beam is made up of :
A.) Characteristic radiation
B.) Bremsstrahlung radiation
C.) electrons
D.) heat - ANS... -Bremsstrahlung radiation
The penetrating power of the x-ray beam is controlled by varying the:
A.) anode angle
B.) anode speed
C.) milliamperage (mA)
D.) Kilovoltage (kVp) - ANS... -Kilovoltage (kVp)
Which of the following functions involve the autotransformer?
A.) kVp selection
B.) mA selection
C.) exposure time selection
D.) Automated exposure control - ANS... -kVp selection
What is the IR that is used for computed radiography?
A.) Direct-conversion flat panel detector
B.) Indirect-conversion flat panel detector
C.) Rare earth intensifying screen
D.) Photostimulable Phosphor (PSP) plate - ANS... -Photostimulable Phosphor
(PSP) plate
Nearly all new x-ray machines manufactured today use _________________
generators
A.) single-phase
B.) Three-phase, six-pulse
C.) Three-phase, 12-pulse
D.) High-frequency - ANS... -High-frequency
The target of the x-ray tube is made of:
A.) tungsten
B.) glass
C.) Stainless steel
D.) Fluorescent phospors - ANS... -tungsten
,What is the standard control limit for the field light to radiation field alignment
test?
A.) exact alignment
B.) +/- 1% of SID
C.) +/- 2% of SID
D.) +/- 5% of SID - ANS... -+/- 2% of SID
What is the standard control limit for the beam (Central ray) alignment test?
A.) exact alignment
B.) within 1 degree of perpendicular
C.) within 2 degrees of perpendicular
D.) within 5 degrees of perpendicular - ANS... -within 1 degree of perpendicular
How often should lead aprons and gloves be checked for cracks or holes?
A.) every 3 months
B.) every 6 months
C.) every 9 months
D.) every 12 months - ANS... -every 6 months
How can detector fog be prevented when using computed radiography cassettes
A.) Use the maximum SID
B.) Apply close collimation
C.) Protect the cassette before and after exposure
D.) Select the optimum kVp - ANS... -Protect the cassette before and after
exposure
Which of the following will result in increase receptor exposure?
1. Increase mA
2. Increase exposure time
3. Increase kVp
A.) 1 and 2 only
B.) 1 and 3 only
C.) 2 and 3 only
D.) 1, 2 , and 3 - ANS... -1, 2 , and 3
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. -
ANS... -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% - ANS... -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. -
ANS... -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 - ANS... -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 - ANS... -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
VERIFIED ANSWERS A BRAND NEW!! /A+ GRADE
ASSURED
When radiation exposure occurs during pregnancy, the greatest risk of birth defects
occur when the exposure:
1. Exceeds 5 rad to the uterus
2. Occurs within the first trimester of pregnancy
3. Occurs within the third trimester of pregnancy
A.) 1 and 2 only
B.) 1 and 3 only
C.) 2 and 3 only
D.) 1, 2, and 3 - ANS... -1 and 2 only
At what kVp levels do Compton interactions occur?
A.) They do not occur with with x-ray exposure
B.) They occur below the diagnostic radiology kVp range
C.) They occur above the diagnostic radiology kVp range
D.) They occur throughout the diagnostic radiology kvp range. - ANS... -They
occur throughout the diagnostic radiology kvp range.
What is the principal source of scatter radiation in radiography?
A.) the tube housing
B.) The Patient
C.) The IR
D.) The Collimator - ANS... -The patient
What are the four essential elements required for x-ray production?
A.) A target, a vacuum, an electron source, and a high potential difference
B.) A target, an electron source, an inert gas environment, and a high potential
difference
C.) An electron source, a magnetic field, a resistance-free path, and a target.
,D.) An electron source, an electric field, a circuit and a target - ANS... -A target, a
vacuum, an electron source, and a high potential difference
The greatest portion of the x-ray beam is made up of :
A.) Characteristic radiation
B.) Bremsstrahlung radiation
C.) electrons
D.) heat - ANS... -Bremsstrahlung radiation
The penetrating power of the x-ray beam is controlled by varying the:
A.) anode angle
B.) anode speed
C.) milliamperage (mA)
D.) Kilovoltage (kVp) - ANS... -Kilovoltage (kVp)
Which of the following functions involve the autotransformer?
A.) kVp selection
B.) mA selection
C.) exposure time selection
D.) Automated exposure control - ANS... -kVp selection
What is the IR that is used for computed radiography?
A.) Direct-conversion flat panel detector
B.) Indirect-conversion flat panel detector
C.) Rare earth intensifying screen
D.) Photostimulable Phosphor (PSP) plate - ANS... -Photostimulable Phosphor
(PSP) plate
Nearly all new x-ray machines manufactured today use _________________
generators
A.) single-phase
B.) Three-phase, six-pulse
C.) Three-phase, 12-pulse
D.) High-frequency - ANS... -High-frequency
The target of the x-ray tube is made of:
A.) tungsten
B.) glass
C.) Stainless steel
D.) Fluorescent phospors - ANS... -tungsten
,What is the standard control limit for the field light to radiation field alignment
test?
A.) exact alignment
B.) +/- 1% of SID
C.) +/- 2% of SID
D.) +/- 5% of SID - ANS... -+/- 2% of SID
What is the standard control limit for the beam (Central ray) alignment test?
A.) exact alignment
B.) within 1 degree of perpendicular
C.) within 2 degrees of perpendicular
D.) within 5 degrees of perpendicular - ANS... -within 1 degree of perpendicular
How often should lead aprons and gloves be checked for cracks or holes?
A.) every 3 months
B.) every 6 months
C.) every 9 months
D.) every 12 months - ANS... -every 6 months
How can detector fog be prevented when using computed radiography cassettes
A.) Use the maximum SID
B.) Apply close collimation
C.) Protect the cassette before and after exposure
D.) Select the optimum kVp - ANS... -Protect the cassette before and after
exposure
Which of the following will result in increase receptor exposure?
1. Increase mA
2. Increase exposure time
3. Increase kVp
A.) 1 and 2 only
B.) 1 and 3 only
C.) 2 and 3 only
D.) 1, 2 , and 3 - ANS... -1, 2 , and 3
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. -
ANS... -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% - ANS... -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. -
ANS... -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 - ANS... -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 - ANS... -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
