EXAM TEST BANK 200 QUESTIONS AND
CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY
GRADED A+
A MRI procedure is contraindicated for a patient who has:
a. a pacemaker that was placed 15 years ago
b. dental fillings
c. subdural bleeding
d. scoliosis - ANSWER>>A
A PA chest image reveals that only eight ribs are seen above the diaphragm. Which of the
following suggestions would improve the inspirtations of lungs?
a. use higher kV to penetrate the diaphragm
b. perform the chest position supine
c. take the exposure on the second inspiration rather than on first
d. use a shorter exposure time - ANSWER>>C
A PA chest radiograph reveals that the left sternoclavicular joint is superimposed upon the
spine and the right joint is open and farther from the spine. What specific positioning error has
been committed?
a. left tilt
b. rotation into the LAO position
c. right tilt
d. rotation into the RAO position - ANSWER>>B
A ____ response to radiation is directly proportional to the dose received.
a. linear
b. nonlinear
c. curvilinear
d. nonthreshold - ANSWER>>
A critique of this image demonstrates which repeatable error?
a. extension of the skull
,b. mouth not open enough
c. flexion of the skull
d. rotation of the head to the right - ANSWER>>A
Which of the following describes the correct relationship between the quality of the x-ray beam
and the technique selected on the control panel?
a. low beam penetrability due to low kVp
b. low beam penetrability due to high kVp
c. low beam penetrability due to high mAs
d. low beam penetrability due to low mAs - ANSWER>>A
A particular radiograph was produced using 8 mAs and 84 kVp with an 8:1 ratio grid. The image
is to be repeated using a 16:1 ratio grid. What should be the new mAs to adjust for the grid
ratio change?
Grid ratio and conversion factor
5:1 ratio - conversion factor of 2
6:1 ratio - conversion factor of 3
8:1 ratio - conversion factor of 4
12:1 ratio - conversion factor of 5
16:1 ratio - conversion factor of 6
a. 5 mAs
b. 8 mAs
c. 12 mAs
d. 20 mAs - ANSWER>>C
A patient comes to radiology with a possible mass beneath the right clavicle. The PA and left
lateral chest projections are inconclusive. Which additional projection can be taken to
demonstrate this possible mass?
a. AP and lateral of upper airway
b. right lateral
c. AP erect
d. Apical Lordotic - ANSWER>>D
A patient comes to the imaging department for a follow-up study of the cervical spine. The
patient has had a spinal fusion between C5-C6 performed six months earlier. His physician
wants to access the cervical spine for anteriorposterior mobility. Which of the following
projections would provide this assessment?
a. AP axial-vertebral arch projection
,b. Judd or Fuchs position
c. Swimmers position
d. Hyperflexion and hyperextension projections - ANSWER>>D
A patient comes to the imaging department for a study of the lumbar spine. He has a clinical
history of spondylolisthesis of L5-S1. Which of the following projections will best demonstrate
the severity of this condition?
a. 30 degree obliques
b. AP axial L5-S1
c. lateral L5-S1
d. 50 degress obliques - ANSWER>>C
A patient enters the ER with a possible basilar skull fracture. Which of the following skull
projections would best demonstrate any blood present in the sphenoid sinus?
a. Haas method
b. AP with a 15 degree cephalic angle
c. Horizontal beam lateral projection
d. SMV - ANSWER>>C
A patient has a history of recurrent urinary tract infections. The physician is concerned that the
young child may have urinary reflux. Which of the following procedures would best
demonstrate this condition?
a. IVU
b. voiding cystourethrogram (VCUG)
c. IVU with compression
d. cystogram - ANSWER>>B
A patient has fallen on an out stretched hand and has a posterior wrist/forearm fracture
approximately one inch proximal to the carpal bones. Which type of fracture is this?
a. Boxer
b. Smiths
c. Colles
d. Potts - ANSWER>>C
A patient is in the ICU after abdominal surgery. The surgeon is concerned about a possible
perforated bowel. Thye patient's can't stand or sit. Which of the following positions will best
demonstrate any possible intra-abdominal free air?
a. ventral decubitus
, b. dorsal decubitus
c. left lateral decubitus
d. right lateral decubitus - ANSWER>>C
Which of the following is NOT a test performed as part of a quality-control (QC) program to
check the radiographic equipment?
A. reproducibility
B. number of repeat images due to technologist collimation errors
C. light field to radiation field alignment
D. central ray alignment - ANSWER>>B
A radiograph of an AP mortise projection of the ankle reveals that the lateral malleolus is
slightly superimposed over the talus and the lateral joint space is not open. What is most likely
cause for this radiographic outcome?
a. Excessive plantar flexion of the foot and ankle
b. Excessive dorsiflexion of the foot and ankle
c. Insufficient medial rotation of the foot and ankle
d. Excessive medial rotation of the foot and ankle - ANSWER>>C
Contrast resolution of a CR/DR image is determined by the _______ of the system.
a. matrix size
b. bit depth
c. sampling frequency
d. dynamic range - ANSWER>>B
A radiographic image of the LPO projection of the lumber spine reveals that the downside
pedicle is projected too far posteriorly on to the vertebral body. What specific positioning error
is present on this radiographic image?
a. excessive rotation of the spine
b. tilt of the spine
c. incorrect CR placement
d. insufficient rotation of the spine - ANSWER>>A
A secondary barrier is designed to absorb ____ radiation.
1. leakage 2. scattered 3. primary
a. 1 only
b. 2 only
c. 3 only