1|Page
LMRT Exam Prep 2025/ 2026 – Limited Scope
Radiography Study Guide with Practice Questions and
Correct ARRT Answers||Latest Exam!!!
Increasing diagnostic filtration from 2.5 mm to 3.5 mm will
have what effect on x-ray beam intensity?
A. Increase in x-ray beam intensity
B. Decrease in x-ray beam intensity
C. No change in x-ray beam intensity - Answer-B.
Decrease in x-ray beam intensity
What is the minimum requirement for the evaluation of
holes and cracks of shielding accessories?
A. Annually
B. Bi-annually
C. Semi-annually
D. Monthly - Answer-A. Annually
Which of the listed x-ray generator types has the least
amount of voltage ripple?
,2|Page
A. Three-phase, twelve pulse
B. Single-phase, half-wave
C. Single-phase, full-wave
D. Three-phase, six-pulse - Answer-A. Three-phase,
twelve pulse
An x-ray of the sternum uses a 72-inch source-to-image
distance (SID) and a 10-inch by 12-inch image receptor. If
the image of the sternum measures 9 cm and the actual
sternum measures 6 cm, what is the magnification factor?
A. 54
B. 1.5
C. 8
D. 0.67 - Answer-B. 1.5
A Picture Archiving and Communication System (PACS)
network is used to connect which three of the following?
(Select three)
I. Radiologist reading station
,3|Page
II. Imaging Equipment
III. PACS servers
IV. Electronic Medical Record (EMR) - Answer-I, II and III
Federal law on radiation protection requires which two of
the following? (Select two)
I. Signage for radiation areas
II. Maintaining personnel dose records
III. Publication of personnel dose records
IV. Dosimeters for all employees exposed to radiation -
Answer-I and II
Because of the binding energy of a K-shell tungsten atom,
the minimum electron energy necessary to create a
characteristic photon is:
A. 80 kiloelectron volts (keV)
B. 73 kiloelectron volts (keV)
C. 69.5 kiloelectron volts (keV)
, 4|Page
D. 55 kiloectron volts (keV) - Answer-C. 69.5 kiloelectron
volts (keV)
Walls that are considered to be secondary barriers should
be:
A. 0.25 mm of lead thickness and be 1.5 meters (5 feet)
tall
B. 0.4 mm of lead thickness and be 1.5 meters (5 feet) tall
C. 0.8 mm of lead thickness and be 2.1 meters (7 feet) tall
D. 1.6 mm of lead thickness and be 2.1 meters (7 feet) tall
- Answer-C. 0.8 mm of lead thickness and be 2.1 meters
(7 feet) tall
The Heimlich maneuver (abdominal thrust) is used for
someone who:
A. Has dyspnea while lying supine
B. Is choking
C. Is in cardiac arrest
D. Has a nosebleed - Answer-B. Is choking
LMRT Exam Prep 2025/ 2026 – Limited Scope
Radiography Study Guide with Practice Questions and
Correct ARRT Answers||Latest Exam!!!
Increasing diagnostic filtration from 2.5 mm to 3.5 mm will
have what effect on x-ray beam intensity?
A. Increase in x-ray beam intensity
B. Decrease in x-ray beam intensity
C. No change in x-ray beam intensity - Answer-B.
Decrease in x-ray beam intensity
What is the minimum requirement for the evaluation of
holes and cracks of shielding accessories?
A. Annually
B. Bi-annually
C. Semi-annually
D. Monthly - Answer-A. Annually
Which of the listed x-ray generator types has the least
amount of voltage ripple?
,2|Page
A. Three-phase, twelve pulse
B. Single-phase, half-wave
C. Single-phase, full-wave
D. Three-phase, six-pulse - Answer-A. Three-phase,
twelve pulse
An x-ray of the sternum uses a 72-inch source-to-image
distance (SID) and a 10-inch by 12-inch image receptor. If
the image of the sternum measures 9 cm and the actual
sternum measures 6 cm, what is the magnification factor?
A. 54
B. 1.5
C. 8
D. 0.67 - Answer-B. 1.5
A Picture Archiving and Communication System (PACS)
network is used to connect which three of the following?
(Select three)
I. Radiologist reading station
,3|Page
II. Imaging Equipment
III. PACS servers
IV. Electronic Medical Record (EMR) - Answer-I, II and III
Federal law on radiation protection requires which two of
the following? (Select two)
I. Signage for radiation areas
II. Maintaining personnel dose records
III. Publication of personnel dose records
IV. Dosimeters for all employees exposed to radiation -
Answer-I and II
Because of the binding energy of a K-shell tungsten atom,
the minimum electron energy necessary to create a
characteristic photon is:
A. 80 kiloelectron volts (keV)
B. 73 kiloelectron volts (keV)
C. 69.5 kiloelectron volts (keV)
, 4|Page
D. 55 kiloectron volts (keV) - Answer-C. 69.5 kiloelectron
volts (keV)
Walls that are considered to be secondary barriers should
be:
A. 0.25 mm of lead thickness and be 1.5 meters (5 feet)
tall
B. 0.4 mm of lead thickness and be 1.5 meters (5 feet) tall
C. 0.8 mm of lead thickness and be 2.1 meters (7 feet) tall
D. 1.6 mm of lead thickness and be 2.1 meters (7 feet) tall
- Answer-C. 0.8 mm of lead thickness and be 2.1 meters
(7 feet) tall
The Heimlich maneuver (abdominal thrust) is used for
someone who:
A. Has dyspnea while lying supine
B. Is choking
C. Is in cardiac arrest
D. Has a nosebleed - Answer-B. Is choking
