STUDY GUIDE BMO EXAM QUESTIONS
AND ANSWERS 100% PASS.
Oldest and largest radiologic science professional organziation is the: - ANS American Society
of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to cerify radiologic
technologists and limited operators is the: - ANS American Registry of Radiologic
Technologists (ARRT)
The radioation that exits the opposite side of the patient to expose the image receptor (IR) is
called: - ANS Remnant radiation (exit radiation)
The term used to describe radiation that is absorbed by matter: - ANS Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is called
the: - ANS Latent image
The radiation that exits the body in all directions and causes unwanted exposure on the image
receptor (IR) as well as anyone who is in the room is called _________ radiation? -
ANS Scatter radiation
The radiation that exits the x-ray tube and travels in-air to the patient is called: - ANS Primary
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,The boxlike device attached under the tube housing that allows the limited operator to vary the
size of the radiation field is called the: - ANS Collimator
An invisible line in the center of the x-ray beam and perpendicular to the long axis of the x-ray
tube is called the: - ANS central ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - ANS 20 msec
The number 9^2 is equal to: - ANS 81
The number 4 is the square root of: - ANS 2
When 62 kVp is increased by 30%, the result is approximately: - ANS 81 kVp
When the fraction 7/8 is converted to a decimal, the result is: - ANS 0.875
When 230% is expressed as a decimal, the result is: - ANS 2.3
A radiographic image is made using 500 mA, 0.1 sec, 80 kVp and 48-inches SID. The value of the
mAs for this exposure is: - ANS 50 mAs
An image made using 20 mAs and 100 kVp has satisfactory radiographic density, but is lacking in
radiographic contrast. Which of the following techniques will improve the appearance of the
image? - ANS 10 mAs and 115 kVp
40 mAs and 115 kVp
10 mAs and 85 kVp
40 mAs and 85 kVp
40 mAs and 85 kVp
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
,A satisfactory radiographic image of a shoulder is made on a patient measuring 14 cm, using 15
mAs, and 75 kVp. Approx how much mAs is needed to produce a similar image on a patient
measuring 16 cm? - ANS 16 mAs
20 mAs
25 mAs
35 mAs
20 mAs
A satisfactory radiographic image is made using 40-inches SID and 25 mAs. Approx how much
mAs is required to produce a similar image at 48-inches SID? - ANS 50 mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at the speed
of: - ANS 186,000 miles per second
The smallest possible unit of electromagnetic energy is the: - ANS Photon
Which of the following would be considered a characteristic of x-rays? - ANS 1. have no mass
2. are electrically neutral
3. travel in straight line
1, 2, & 3
The electrical current flowing in an x-ray tube is measured in: - ANS milliamperes
The force or strength of the electron flow in an electrical current is measured in: -
ANS kilovoltage
The device used to produce the high voltage needed for x-ray production is called the: -
ANS transformer
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
, In radiology, 80,000 volts is converted to: - ANS 80 kVp
The target and the filament in the x-ray tube are made of: - ANS tungsten
Electrons are made available in the filament of the x-ray tube by a process called: -
ANS thermionic emission
The anode in the x-ray tubes rotate at a high rpm to: - ANS dissipate the heat
The target in the x-ray tube is angled to affect the: - ANS 1. heat capacity
2. number of photons
3. sharpness of the image
1 and 2
1 and 3
2 and 3
1, 2 & 3
*1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? - ANS 0.1
mm
0.3 mm
0.6 mm
1.2 mm
0.6 mm
2026 STUDY MATERIAL @COPYRIGHT RESERVED 4
AND ANSWERS 100% PASS.
Oldest and largest radiologic science professional organziation is the: - ANS American Society
of Radiologic Technologists (ASRT)
The organization that sets standards and prepares examinations necessary to cerify radiologic
technologists and limited operators is the: - ANS American Registry of Radiologic
Technologists (ARRT)
The radioation that exits the opposite side of the patient to expose the image receptor (IR) is
called: - ANS Remnant radiation (exit radiation)
The term used to describe radiation that is absorbed by matter: - ANS Attenuation
The "unseen" image that is contained in the image receptor (IR) before it is processed is called
the: - ANS Latent image
The radiation that exits the body in all directions and causes unwanted exposure on the image
receptor (IR) as well as anyone who is in the room is called _________ radiation? -
ANS Scatter radiation
The radiation that exits the x-ray tube and travels in-air to the patient is called: - ANS Primary
2026 STUDY MATERIAL @COPYRIGHT RESERVED 1
,The boxlike device attached under the tube housing that allows the limited operator to vary the
size of the radiation field is called the: - ANS Collimator
An invisible line in the center of the x-ray beam and perpendicular to the long axis of the x-ray
tube is called the: - ANS central ray
An exposure time of 0.02 seconds is equal to how many milliseconds? - ANS 20 msec
The number 9^2 is equal to: - ANS 81
The number 4 is the square root of: - ANS 2
When 62 kVp is increased by 30%, the result is approximately: - ANS 81 kVp
When the fraction 7/8 is converted to a decimal, the result is: - ANS 0.875
When 230% is expressed as a decimal, the result is: - ANS 2.3
A radiographic image is made using 500 mA, 0.1 sec, 80 kVp and 48-inches SID. The value of the
mAs for this exposure is: - ANS 50 mAs
An image made using 20 mAs and 100 kVp has satisfactory radiographic density, but is lacking in
radiographic contrast. Which of the following techniques will improve the appearance of the
image? - ANS 10 mAs and 115 kVp
40 mAs and 115 kVp
10 mAs and 85 kVp
40 mAs and 85 kVp
40 mAs and 85 kVp
2026 STUDY MATERIAL @COPYRIGHT RESERVED 2
,A satisfactory radiographic image of a shoulder is made on a patient measuring 14 cm, using 15
mAs, and 75 kVp. Approx how much mAs is needed to produce a similar image on a patient
measuring 16 cm? - ANS 16 mAs
20 mAs
25 mAs
35 mAs
20 mAs
A satisfactory radiographic image is made using 40-inches SID and 25 mAs. Approx how much
mAs is required to produce a similar image at 48-inches SID? - ANS 50 mAs
X-rays have electromagnetic energy. The velocity (or speed) of this energy travels at the speed
of: - ANS 186,000 miles per second
The smallest possible unit of electromagnetic energy is the: - ANS Photon
Which of the following would be considered a characteristic of x-rays? - ANS 1. have no mass
2. are electrically neutral
3. travel in straight line
1, 2, & 3
The electrical current flowing in an x-ray tube is measured in: - ANS milliamperes
The force or strength of the electron flow in an electrical current is measured in: -
ANS kilovoltage
The device used to produce the high voltage needed for x-ray production is called the: -
ANS transformer
2026 STUDY MATERIAL @COPYRIGHT RESERVED 3
, In radiology, 80,000 volts is converted to: - ANS 80 kVp
The target and the filament in the x-ray tube are made of: - ANS tungsten
Electrons are made available in the filament of the x-ray tube by a process called: -
ANS thermionic emission
The anode in the x-ray tubes rotate at a high rpm to: - ANS dissipate the heat
The target in the x-ray tube is angled to affect the: - ANS 1. heat capacity
2. number of photons
3. sharpness of the image
1 and 2
1 and 3
2 and 3
1, 2 & 3
*1 and 3
Which of the following would be a common small focal spot size in an x-ray tube? - ANS 0.1
mm
0.3 mm
0.6 mm
1.2 mm
0.6 mm
2026 STUDY MATERIAL @COPYRIGHT RESERVED 4
