Diagnostic imaging HESI test prep
Questions and answers
If an image of optimal radiographic density was acquired using a traditional film-
screen system at 16 milliampere-seconds (mAs) and a source-image distance
(SID) of 100 cm, what mAs is required to produce the same density at a new
distance of 50 cm?
A. 32 mAs.
B. 4 mAs.
C. 8 mAs.
D. 2 mAs.
B
Which procedural error is most likely to cause a long bone to appear
foreshortened on a radiographic image?
A. The x-ray beam is not perpendicular to the image receptor.
B. The part is not parallel to the image receptor.
C. The x-ray tube is too far from the image receptor.
D. The part is too far form the image receptor.
B
At what level should the x-ray beam be centered for a radiographic exam of the
cervical spine?
A. C1 to C2.
B. C5 to C6.
C. C7 to T1.
D. C3 to C4.
D
When acquiring a lateral view of a small animal abdomen, what are the
recommended borders of collimation?
A. Second cervical vertebra cranially and 5th thoracic vertebra caudally.
B. The caudal aspect of T1 cranially and the greater trochanter caudally.
C. Manubrium sterni cranially and the greater trochanter caudally.
D. Manubrium sterni cranially and a point midway between the xiphoid and last
rib caudally.
B
In an automatic film processing system, what is the main purpose of the
developer?
A. Convert the exposed silver halide crystals into black metallic silver.
B. Clear away the unexposed, undeveloped silver halide crystals.
Questions and answers
If an image of optimal radiographic density was acquired using a traditional film-
screen system at 16 milliampere-seconds (mAs) and a source-image distance
(SID) of 100 cm, what mAs is required to produce the same density at a new
distance of 50 cm?
A. 32 mAs.
B. 4 mAs.
C. 8 mAs.
D. 2 mAs.
B
Which procedural error is most likely to cause a long bone to appear
foreshortened on a radiographic image?
A. The x-ray beam is not perpendicular to the image receptor.
B. The part is not parallel to the image receptor.
C. The x-ray tube is too far from the image receptor.
D. The part is too far form the image receptor.
B
At what level should the x-ray beam be centered for a radiographic exam of the
cervical spine?
A. C1 to C2.
B. C5 to C6.
C. C7 to T1.
D. C3 to C4.
D
When acquiring a lateral view of a small animal abdomen, what are the
recommended borders of collimation?
A. Second cervical vertebra cranially and 5th thoracic vertebra caudally.
B. The caudal aspect of T1 cranially and the greater trochanter caudally.
C. Manubrium sterni cranially and the greater trochanter caudally.
D. Manubrium sterni cranially and a point midway between the xiphoid and last
rib caudally.
B
In an automatic film processing system, what is the main purpose of the
developer?
A. Convert the exposed silver halide crystals into black metallic silver.
B. Clear away the unexposed, undeveloped silver halide crystals.
