Mock ARRT Exam #1 with correct
answers 100% 2026
The brightness gained by an image intensification tube is the product of which of the following?
A. Minification gain times tube distance
B. Minification gain times flux gain
C. Flux gain times mA
D. mA times kVp times tube-to-table distance - Correct Answers B (Minification gain is a result
of the focusing of the electron beam to a smaller output phosphor. Flux gain is the result of
accelerating the electron beam through a series of electrostatic lens. Multiply the two together
to get the brightness gained.)
This AP radiograph of the hip was done using automatic exposure control (AEC). What could
have made it come out underexposed?
A. mA set too low
B. Small focal spot used
C. Back-up time too short
D. kVp too high - Correct Answers C (AEC is designed to reproduce a predetermined density.
Changing mA, kVp and focal spot size should still produce the correct density. However, if the
back-up time is too short, it will terminate the exposure before the ionization device does.)
The skull and spine make up which of the following?
A. True skeleton
B. Bony skeleton
C. Axial skeleton
,D. Appendicular skeleton - Correct Answers C (The limbs, shoulder girdle, and pelvic girdle
make up the appendicular skeleton)
During retrograde urography contrast media is administered in which of the following ways?
A. Intravenously
B. Via a cystoscope
C. Via a ureteral catheter
D. Intramuscularly - Correct Answers C (Retrograde means backwards, or against the flow.
During a retrograde urography examination, the urologist use a cystoscope to view the bladder
and then places one or two ureteral catheters into the ureter(s) and injects contrast media
backwards into the renal pelvis.)
With digital imaging, radiographers can avoid the possibility of repeats by overexposing the
patient. This practice is referred to as:
A. digital danger.
B. patient indexing.
C. exposure creep.
D. x ray over-load.
. - Correct Answers C (Overexposing patients is a problem with digital radiography because it
often goes unnoticed if the exposure indicator numbers are not being monitored)
The margin of error a radiographer has in setting his/her technical factors and still obtaining a
diagnostic quality image is known as what?
A. Luck
B. Technical margin
,C. Exposure latitude
D. Error area - Correct Answers C (Exposure latitude is the range of technical factor settings that
will produce a diagnostic quality radiograph. For example, if 40 mAs will produce a perfect
density, anything between 30 mAs - 50 mAs will produce a diagnostic quality image. This 20 mAs
range is the margin of error or exposure latitude.)
Which of the following would NOT be considered a type of transmission-based precaution?
A. AIDS
B. Contact
C. Airborne
D. Droplet
. - Correct Answers A (Contact isolation prevents the spread of diseases like staphylococcus,
airborne isolation prevents the spread of airborne diseases like tuberculosis, and droplet
precautions prevents the spread of diseases like influenza)
After a barium enema, you notice that the sheets have fecal material and blood on them. What
should be done with the sheets?
A. Place them in a leak proof linen bag
B. Place them in a red biohazardous bag
C. Place them in a red bag and then put them in a leak-proof linen bag
D. Double bag them - Correct Answers A (Linen bags must be leak-proof. Also, all linen is
considered contaminated. Therefore, simply place the sheets in the linen hamper as you would
with any other sheet. The laundry will handle them properly.)
When radiation exposure causes hematopoietic death, what is the main reason why the person
died?
, A. Hemorrhage
B. Respiratory distress
C. Immune system is destroyed
D. Heart failure - Correct Answers C (Since the lymphocytes are the cells that are easiest to
destroy, the person will die from infection.)
Which of the following target materials increases the efficiency and energy of x-ray production?
A. Molybdenum
B. Rhodium
C. Tungsten
D. Xenon - Correct Answers C (As the atomic number of the target material increases, efficiency
and energy increases. Molybdenum (Z=42), Rhodium (Z=45), Tungsten (Z=74). Xenon (Z=54) is
not a target material.)
Which of the following positions/projections will best demonstrate the distal tibiofibular joint?
A. AP
B. 15 - 20 degree medial oblique
C. 45 degree medial oblique
D. Lateral - Correct Answers C (The distal tibiofibular joint is best visualized with a 45 degree
medial oblique position of the ankle. A 15 - 20 degree medial oblique position (Mortise) will
best demonstrate the entire ankle joint.)
Which bones make up the elbow joint?
A. Radius and ulna
answers 100% 2026
The brightness gained by an image intensification tube is the product of which of the following?
A. Minification gain times tube distance
B. Minification gain times flux gain
C. Flux gain times mA
D. mA times kVp times tube-to-table distance - Correct Answers B (Minification gain is a result
of the focusing of the electron beam to a smaller output phosphor. Flux gain is the result of
accelerating the electron beam through a series of electrostatic lens. Multiply the two together
to get the brightness gained.)
This AP radiograph of the hip was done using automatic exposure control (AEC). What could
have made it come out underexposed?
A. mA set too low
B. Small focal spot used
C. Back-up time too short
D. kVp too high - Correct Answers C (AEC is designed to reproduce a predetermined density.
Changing mA, kVp and focal spot size should still produce the correct density. However, if the
back-up time is too short, it will terminate the exposure before the ionization device does.)
The skull and spine make up which of the following?
A. True skeleton
B. Bony skeleton
C. Axial skeleton
,D. Appendicular skeleton - Correct Answers C (The limbs, shoulder girdle, and pelvic girdle
make up the appendicular skeleton)
During retrograde urography contrast media is administered in which of the following ways?
A. Intravenously
B. Via a cystoscope
C. Via a ureteral catheter
D. Intramuscularly - Correct Answers C (Retrograde means backwards, or against the flow.
During a retrograde urography examination, the urologist use a cystoscope to view the bladder
and then places one or two ureteral catheters into the ureter(s) and injects contrast media
backwards into the renal pelvis.)
With digital imaging, radiographers can avoid the possibility of repeats by overexposing the
patient. This practice is referred to as:
A. digital danger.
B. patient indexing.
C. exposure creep.
D. x ray over-load.
. - Correct Answers C (Overexposing patients is a problem with digital radiography because it
often goes unnoticed if the exposure indicator numbers are not being monitored)
The margin of error a radiographer has in setting his/her technical factors and still obtaining a
diagnostic quality image is known as what?
A. Luck
B. Technical margin
,C. Exposure latitude
D. Error area - Correct Answers C (Exposure latitude is the range of technical factor settings that
will produce a diagnostic quality radiograph. For example, if 40 mAs will produce a perfect
density, anything between 30 mAs - 50 mAs will produce a diagnostic quality image. This 20 mAs
range is the margin of error or exposure latitude.)
Which of the following would NOT be considered a type of transmission-based precaution?
A. AIDS
B. Contact
C. Airborne
D. Droplet
. - Correct Answers A (Contact isolation prevents the spread of diseases like staphylococcus,
airborne isolation prevents the spread of airborne diseases like tuberculosis, and droplet
precautions prevents the spread of diseases like influenza)
After a barium enema, you notice that the sheets have fecal material and blood on them. What
should be done with the sheets?
A. Place them in a leak proof linen bag
B. Place them in a red biohazardous bag
C. Place them in a red bag and then put them in a leak-proof linen bag
D. Double bag them - Correct Answers A (Linen bags must be leak-proof. Also, all linen is
considered contaminated. Therefore, simply place the sheets in the linen hamper as you would
with any other sheet. The laundry will handle them properly.)
When radiation exposure causes hematopoietic death, what is the main reason why the person
died?
, A. Hemorrhage
B. Respiratory distress
C. Immune system is destroyed
D. Heart failure - Correct Answers C (Since the lymphocytes are the cells that are easiest to
destroy, the person will die from infection.)
Which of the following target materials increases the efficiency and energy of x-ray production?
A. Molybdenum
B. Rhodium
C. Tungsten
D. Xenon - Correct Answers C (As the atomic number of the target material increases, efficiency
and energy increases. Molybdenum (Z=42), Rhodium (Z=45), Tungsten (Z=74). Xenon (Z=54) is
not a target material.)
Which of the following positions/projections will best demonstrate the distal tibiofibular joint?
A. AP
B. 15 - 20 degree medial oblique
C. 45 degree medial oblique
D. Lateral - Correct Answers C (The distal tibiofibular joint is best visualized with a 45 degree
medial oblique position of the ankle. A 15 - 20 degree medial oblique position (Mortise) will
best demonstrate the entire ankle joint.)
Which bones make up the elbow joint?
A. Radius and ulna
