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RADIOGRAPHIC POSITIONING II - FINAL EXAM QUESTIONS AND ANSWERS
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RADIOGRAPHIC POSITIONING II - FINAL EXAM QUESTIONS AND ANSWERS
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RADIOGRAPHIC POSITIONING II - FINALEXAM QUESTIONS AND ANSWERS
How many vertebrae constitute the entire spinal column?
a. 23
b. 28
c. 33
d. 37 - Answer-c. 33
The right sacroiliac joint would be best demonstrated in which projection?
a. Chassard-Lapine projection
b. AP projection
c. RAO projection
d. RPO projection - Answer-c. RAO projection
Which position is best in order to demonstrate the zygapophyseal articulations of the
lumbar spine?
a. AP projection
b. AP 45 degree oblique projection
c. lateral projection
d. AP erect projection - Answer-b. AP 45 degree oblique projection
Which plane, used frequently in positioning, separates the body into equal anterior and
posterior portions?
a. midcoronal plane
b. midsagittal plane
c. transverse plane
d. oblique plane - Answer-a. midcoronal plane
How much central ray angulation is required if the sacrum is the desired area of
interest?
a. 15 degrees caudal
b. 15 degrees cephalic
c. 25 degrees cephalic
d. 25 degrees caudal - Answer-b. 15 degrees cephalic
How many bones are in the normal human body?
a. 185
b. 200
c. 206
d. 212 - Answer-c. 206
In the typical lumbar spine, how many vertebrae are present?
a. 5
b. 7
,c. 12
d. 8 - Answer-a. 5
The sthenic body habitus makes up what percentage of the population?
a. 5%
b. 35%
c. 10%
d. 50% - Answer-d. 50%
If the patient is placed in an LAO position with the pelvis rotated 25 degrees and the
center ray exiting 1" medial to the elevated ASIS, what is the resulting structure?
a. right sacroiliac joint
b. left sacroiliac joint
c. left ischial rami
d. right ischial rami - Answer-b. left sacroiliac joint
Which vertebral level does the iliac crest correspond to?
a. L-3
b. T-7
c. T-4
d. L-5/S-1 - Answer-a. L-3
The part of a typical vertebra which is short and connects the body to the laminae on
either side is called
a. the transverse process.
b. the pedicle.
c. the spinous process.
d. the inferior articulating process. - Answer-b. the pedicle.
In an AP projection of the coccyx, what is the degree of central ray angulation?
a. 10 degrees cephalic
b. 15 degrees caudal
c. 15 degrees cephalic
d. 10 degrees caudal - Answer-d. 10 degrees caudal
When performing an oblique projection of the lumbar spine, the eye of the "Scottie dog"
represents which of the following structures?
a. pedicle
b. lamina
c. superior articulating process
d. inferior articulating process - Answer-a. pedicle
The proper degree of obliquity for an AP oblique projection of the right SI joint is
a. 10 degrees.
b. 25 degrees.
c. 35 degrees.
,d. 45 degrees. - Answer-b. 25 degrees
When performing projections of the right sacroiliac joint, the patient can be positioned in
which of the following positions? - Answer-LPO and RAO
When performing an AP projection of the sacrum, to compensate for the normal degree
of kyphosis, the central ray should be directed
a. 35 degrees caudad.
b. 15 degrees cephalic.
c. 10 degrees caudad.
d. 25 degrees cephalic. - Answer-b. 15 degrees cephalic.
An asthenic body habitus refers to a person who
a. is extremely thin with a narrow and shallow thorax.
b. is slender and light in weight.
c. has an athletic build.
d. has a massive build with a deep and broad thorax. - Answer-a. is extremely thin with
a narrow and shallow thorax.
The coccyx is approximately the same size as a __________?
a. Postage stamp
b. An eraser
c. Finger tip
d. Pencil tip - Answer-a. Postage stamp
T/F The lateral position best demonstrates Intervertebral Foramina for Lumbar spine -
Answer-True
T/F The advantage of PA lumbar spine projection is increased OID - Answer-False
T/F Gonadal shielding can and should always be used on males of reproductive age on
coccyx, sacrum, or lumbar spine radiographs - Answer-True
T/F The AP projection of the lumbar spine in female patients lowers the ovarian dose by
25%-30% as compared to the PA projection - Answer-False
T/F The superior sacral end is called the apex. - Answer-False
T/F Spondlolysis is a defect present when the pars interarticularis is fractured - Answer-
True
T/F The AP projection of the lumbar spine opens the intervertebral joint spaces better
than the PA projection. - Answer-False
The ASIS corresponds to which positioning landmark? - Answer-S1-S2
, Which zygapophyseal joint is demonstrated with an RPO position of the lumbar spine? -
Answer-Right zygopophyseal joint
Why must the knees be bent for an AP lumbar spine? - Answer-Reduces Lumbar
Curvature
Name the portion of each lamina between the superior and inferior processes is the: -
Answer-Pars Interarticularis
What is the name for the neck of the "Scottie dog"?
a. Transverse Process
b. Lamina
c. Pars Interarticularis
d. Intervertebral foramina - Answer-c. Pars Interarticularis
What is known as the tailbone?
a. Coccyx
b. sacrum
c. L5/S1
d. Pubis symphysis - Answer-a. Coccyx
A female patient is brought to the emergency department (ED) because of a MVA
(motor vehicle accident). Her chief complaint is pain in the lower lumbar region. The ED
physician orders a lumbar series. Upon questioning, the technologist learns that the
patient is pregnant. The ED physician is made aware of the pregnancy but still wants
the lumbar spine series performed. What can the technologist do to minimize dose to
the fetus and mother?
a. Use higher kV than normal, reduce mAs accordingly
b. Use smallest IR possible
c. Collimate as much as feasible.
d. All of the above should be done - Answer-d. All of the above should be done
A radiograph of an AP axial L5-S1 projection reveals that the joint space is not open.
The following factors were used on this female patient: 80 kV, 40-inch (102 cm) SID,
grid, 35° caudad angle, and CR centered to the ASIS. Which of the following factors
needs to be modified to produce a more diagnostic image?
a. Increase the CR angulation.
b. Decrease the CR angulation.
c. Change the direction of the CR angulation
d. Center the CR higher to place it parallel to the joint space - Answer-c. Change the
direction of the CR angulation
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