LMRT-RADIOGRAPHY ESSENTIALS
EXAM 2025 |GUARANTEED
ACCURATE ANSWERS |VERIFIED
Which of the following changes in (KVP) will result in the greatest
reduction of patient dose, when (MAS) is adjusted to compensate for the
change? - ACCURATE ANSWERS✔✔ Increase kVp by 30%.
Which of the following (IR) system speeds will result in the lowest
patient dose? - ACCURATE ANSWERS✔✔ Faster speed IR system
What is the primary purpose of using gonad shields during radiography?
- ACCURATE ANSWERS✔✔ Reduce the likelihood of genetic effects
Contact & shadow are two types of gonad shield - ACCURATE
ANSWERS✔✔ TRUE
When should gonad shields be used? - ACCURATE ANSWERS✔✔
When the gonads are within 5cm of the radiation field
The greatest cause of unnecessary radiation to patients that can be
controlled by the limited operator are: - ACCURATE ANSWERS✔✔
repeat exposures
,The limited operator can reduce repeat exposures by: - ACCURATE
ANSWERS✔✔ clearly instructing patients
How does x-ray beam restriction minimize patient exposure -
ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ Collimator
How does filtration reduce patient exposure - ACCURATE
ANSWERS✔✔ Removes longer wavelength photons
What is the National Council on Radiation Protection and Measurements
(NCRP) recommendation for the amount of total filtration -
ACCURATE ANSWERS✔✔ 2.5mm Al Equivalent
What are the three principal methods used to protect limited operators
from unnecessary radiation exposure? - ACCURATE ANSWERS✔✔ 1.
Time
2. Distance
3. Shielding
,Which of the following is NOT a type of personnel radiation shielding? -
ACCURATE ANSWERS✔✔ a. Apron
b. Glove
c. Thyroid shield
d. Shadow******** CORRECT
Personnel shielding must be worn on the rare occasion during which the
limited operator may need to remain in the radiographic room during an
exposure to assist the patient in maintaining the proper position. What is
the source of the greatest radiation hazard under this circumstance? -
ACCURATE ANSWERS✔✔ Scattered radiation from the patient
What is the term from radiation that escapes from the x-ray tube
housing? - ACCURATE ANSWERS✔✔ leakage radiation
Why are limited operators prohibited from activities that result in direct
exposure to the primary x-ray beam? - ACCURATE ANSWERS✔✔
They are considered occupationally exposed individuals
Distance, as a method used to limit operator exposure, means that: -
ACCURATE ANSWERS✔✔ the operator should maximize the distance
from the source during an exposure.
Shielding worn for personnel protection is designed to attenuate what
source of exposure - ACCURATE ANSWERS✔✔ scatter radiation
, Which of the following is an acronym for a common type of personnel
dosimeter - ACCURATE ANSWERS✔✔ TLD
What is the recommended placement for a personnel dosimeter on the
body of the limited operator - ACCURATE ANSWERS✔✔ The badge
should be worn in the region of the collar on the anterior surface of the
body and outside the lead apron if worn.
What is the NCRP recommended annual effective dose limit for
occupational exposure - ACCURATE ANSWERS✔✔ 5.0 rem (0.05
severt)
What is the NCRP recommended monthly effective (or equivalent) dose
limit to the fetus for a prego worker? - ACCURATE ANSWERS✔✔
0.05 rem (0.0005 Sv)
Radiation monitoring of personnel is required when what percentage of
the annual occupational effective dose limit is likely to be received -
ACCURATE ANSWERS✔✔ 10%
What is the conventional (British system) radiation unit to express
radiation intensity in air? - ACCURATE ANSWERS✔✔ Roentgen
EXAM 2025 |GUARANTEED
ACCURATE ANSWERS |VERIFIED
Which of the following changes in (KVP) will result in the greatest
reduction of patient dose, when (MAS) is adjusted to compensate for the
change? - ACCURATE ANSWERS✔✔ Increase kVp by 30%.
Which of the following (IR) system speeds will result in the lowest
patient dose? - ACCURATE ANSWERS✔✔ Faster speed IR system
What is the primary purpose of using gonad shields during radiography?
- ACCURATE ANSWERS✔✔ Reduce the likelihood of genetic effects
Contact & shadow are two types of gonad shield - ACCURATE
ANSWERS✔✔ TRUE
When should gonad shields be used? - ACCURATE ANSWERS✔✔
When the gonads are within 5cm of the radiation field
The greatest cause of unnecessary radiation to patients that can be
controlled by the limited operator are: - ACCURATE ANSWERS✔✔
repeat exposures
,The limited operator can reduce repeat exposures by: - ACCURATE
ANSWERS✔✔ clearly instructing patients
How does x-ray beam restriction minimize patient exposure -
ACCURATE ANSWERS✔✔ 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 - ACCURATE ANSWERS✔✔ Collimator
How does filtration reduce patient exposure - ACCURATE
ANSWERS✔✔ Removes longer wavelength photons
What is the National Council on Radiation Protection and Measurements
(NCRP) recommendation for the amount of total filtration -
ACCURATE ANSWERS✔✔ 2.5mm Al Equivalent
What are the three principal methods used to protect limited operators
from unnecessary radiation exposure? - ACCURATE ANSWERS✔✔ 1.
Time
2. Distance
3. Shielding
,Which of the following is NOT a type of personnel radiation shielding? -
ACCURATE ANSWERS✔✔ a. Apron
b. Glove
c. Thyroid shield
d. Shadow******** CORRECT
Personnel shielding must be worn on the rare occasion during which the
limited operator may need to remain in the radiographic room during an
exposure to assist the patient in maintaining the proper position. What is
the source of the greatest radiation hazard under this circumstance? -
ACCURATE ANSWERS✔✔ Scattered radiation from the patient
What is the term from radiation that escapes from the x-ray tube
housing? - ACCURATE ANSWERS✔✔ leakage radiation
Why are limited operators prohibited from activities that result in direct
exposure to the primary x-ray beam? - ACCURATE ANSWERS✔✔
They are considered occupationally exposed individuals
Distance, as a method used to limit operator exposure, means that: -
ACCURATE ANSWERS✔✔ the operator should maximize the distance
from the source during an exposure.
Shielding worn for personnel protection is designed to attenuate what
source of exposure - ACCURATE ANSWERS✔✔ scatter radiation
, Which of the following is an acronym for a common type of personnel
dosimeter - ACCURATE ANSWERS✔✔ TLD
What is the recommended placement for a personnel dosimeter on the
body of the limited operator - ACCURATE ANSWERS✔✔ The badge
should be worn in the region of the collar on the anterior surface of the
body and outside the lead apron if worn.
What is the NCRP recommended annual effective dose limit for
occupational exposure - ACCURATE ANSWERS✔✔ 5.0 rem (0.05
severt)
What is the NCRP recommended monthly effective (or equivalent) dose
limit to the fetus for a prego worker? - ACCURATE ANSWERS✔✔
0.05 rem (0.0005 Sv)
Radiation monitoring of personnel is required when what percentage of
the annual occupational effective dose limit is likely to be received -
ACCURATE ANSWERS✔✔ 10%
What is the conventional (British system) radiation unit to express
radiation intensity in air? - ACCURATE ANSWERS✔✔ Roentgen
