RAD 245- Chapter 11 Quiz- Module 4

Question 1

A PA cranial projection obtained with the patient’s face rotated toward the right side demonstrates:

A. A greater distance from the lateral orbital margin to the lateral cranial cortex on the left side than on the right side
B. A greater distance from the crista galli to the lateral cranial cortex on the right side than on the left side
C. A greater distance from the right mandibular ramus to the cervical vertebrae than from the left mandibular ramus to the cervical vertebrae
D. A greater distance from the lateral orbital margin to the lateral cranial cortex on the right side on the left side

Answer 1

A. A greater distance from the lateral orbital margin to the lateral cranial cortex on the left side than on the right side

Question 2

A lateral cranial projection demonstrates the EAM and inferior cranial cortices without superimposition. One of each corresponding structure is demonstrated inferior to the other. How was the patient mispositioned for such a projection to be obtained?

A. The patient’s head was tilted
B. The patient’s head was rotated
C. The patient’s chin was elevated
D. The CR was centered too superiorly

Answer 2

A. The patient’s head was tilted

Question 3

A patient was unable to elevate the chin enough for a parietoacanthial facial bone projection (Waters method). How could the positioning setup be adjusted for an optimal projection to be obtained?

A. Angle the CR cephalically
B. The image cannot be obtained
C. Align the CR parallel with the MML
D. Elevate the patient’s chin as far as possible and use a perpendicular CR

Answer 3

C. Align the CR parallel with the MML

Question 4

A optimally positioned AP axial cranium projection (Towne Method) demonstrate all of the following except:

A. The inferior occipital bone at the center of the exposure field
B. Symmetrical petrous ridges
C. The dorsum sellae within the foramen magnum
D. The posterior clinoids superior to the foramen magnum

Answer 4

D. The posterior clinoids superior to the foramen magnum

Question 5

A PA axial cranial projection (Caldwell Method) with accurate positioning demonstrates:

1. Equal distances from the crita galli to the lateral cranial cortices on each side
2. The petrous ridges aligned with the supraortbtal margins
3. The petrous pyramids superimposed over the infraorbital margins
4. The superior orbital fissures demonstrated within the orbits

A. 1 and 4 only
B. 2 only
C. 1, 3, and 4 only
D. 1, 2, 3, and 4

Answer 5

C. 1, 3, and 4 only

1. Equal distances from the crita galli to the lateral cranial cortices on each side
2. The petrous pyramids superimposed over the infraorbital margins.
3. The superior orbital fissures demonstrated within the orbits

Question 6

A lateral cranial projection with accurate positioning demonstrates the:

1. Sella Turcica in Profile
2. Right orbital roof slightly superior to the left orbital roof
3. Dorsum sellae within the foramen magnum
4. Mandibular rami superimposed

A. 1 and 4 only
B. 3 only
C. 1, 2, and 4 only
D. 4 only

Answer 6

A. 1 and 4 only

1. Sella Turcica in Profile
2. Mandibular rami superimposed

Question 7

An optimal cranial projection can be distinguished from a PA cranial projection because it demonstrates:

1. Less orbital magnification
2. The internal auditory canals horizontally through the orbits
3. Less distance from the lateral orbital margins to the lateral cranial cortices
4. The anterior clinoids and dorsum sellae superior to the ethmoid sinuses

A. 1 only
B. 1 and 3 only
C. 3 only
D. 2, 3, and 4 only

Answer 7

C. 3 only

3. Less distance from the lateral orbital margins to the lateral cranial cortices

Question 8

A parietoacanthial sinus projection (Waters Method) with accurate positioning demonstrates:

1. An equal distance from the lateral orbital margin to the lateral cranial cortex on both sides
2. The bony nasal septum in alignment with the long axis of the exposure field
3. The petrous ridges demonstrated inferior to the maxillary sinuses
4. The ethmoid sinus through the mouth cavity in an open-mouth projection

A. 1 and 2 only
B. 3 and 4 only
C. 1, 2, and 3 only
D. 1, 2, 3, and 4

Answer 8

C. 1, 2, and 3 only

1. An equal distance from the lateral orbital margin to the lateral cranial cortex on both sides
2. The bony nasal septum in alignment with the long axis of the exposure field
3. The petrous ridges demonstrated inferior to the maxillary sinuses

Question 9

A patient is unable to hyperextend the neck enough for an SMV cranial projection (Schueller Method). How should the positioning setup be adjusted for an optimal projection to be obtained?

A. Align the CR perpendicular to the IOML
B. Extend the patient’s neck as far as possible and use a perpendicular CR
C. Align the CR perpendicular to the OML
D. The image cannot be obtained

Answer 9

A. Align the CR perpendicular to the IOML

Question 10

For an AP Axial mandible projection,

1. The CR is centered to the MSP at the level of the glabella
2. The CR is angled 35 to 40 degrees caudally
3. The IOML is positioned perpendicular to the IR
4. A lenghwise 8 x 10 inch IR is used

A. 3 and 4 only
B. 1 and 2 only
C. 1, 2, and 4 only
D. 1, 2, 3, and 4

Answer 10

C. 1, 2, and 4 only

1. The CR is centered to the MSP at the level of the glabella
2. The CR is angled 35 to 40 degrees caudally
3. A lenghwise 8 x 10 inch IR is used

Question 11

A poorly positioned AP axial cranial projection (Caldwell Method) demonstrates the petrous ridges inferior to the infraorbital margins. How could the positioning setup be adjusted to obtain an optimal projection?

1. Rotate the patient’s face toward the left side
2. Adjust the CR angulation caudally
3. Tuck the patient’s chin until the OML is perpendicular to the IR
4. Elevate the patient’s chin until the OML is perpendicular to the IR

A. 1 only
B. 2 and 3 only
C. 3 and 4 only
D. 2, 3, and 4 only

Answer 11

B. 2 and 3 only

2. Adjust the CR angulation caudally
3. Tuck the patient’s chin until the OML is perpendicular to the IR

Question 12

An AP axial cranial projection (Towne Method) with accurate positioning demonstrates:

1. Equal distances from the posterior clinoid processes to the lateral borders of the foramen magnum on each side
2. The MSP is perpendicular to the IR
3. The dorsum sellae within the foramen magnum
4. The posterior clinoids inferior to the foramen magnum

A. 1, 2, and 3 only
B. 1 and 3 only
C. 2 and 4 only
D. 1, 2, 3, and 4 only

Answer 12

A. 1, 2, and 3 only

1. Equal distances from the posterior clinoid processes to the lateral borders of the foramen magnum on each side
2. The MSP is perpendicular to the IR
3. The dorsum sellae within the foramen magnum

Question 13

For a PA cranial projection:

1. The MSP is positioned parallel with the IR
2. The OML is aligned perpendicular to the IR
3. The CR is aligned perpendicular to the IR
4. The CR is centered to the nasion

A. 1 and 3 only
B. 2 and 3 only
C. 2, 3, and 4 only
D. 1 and 4 only

Answer 13

B. 2 and 3 only

2. The OML is aligned perpendicular to the IR
3. The CR is aligned perpendicular to the IR

Question 14

The distances from the anterior nasal spine to the lateral soft tissue on both sides is equal on a tangential (suprainferior) nasal bones projection when the:

A. GAL is aligned perpendicular to the IR
B. MSP is aligned perpendicular to the IR
C. CR is angled caudally
D. Patient is placed in a prone position

Answer 14

B. MSP is aligned perpendicular to the IR

She was supposed to take this out- she did not do it

Question 15

An AP cranial projection with poor positioning demonstrates the petrous ridges inferior to the supraorbital margins. How could the positioning setup be adjusted for an optimal projection to be obtained?

1. Rotate the patient’s face toward the left side
2. Angle the CR caudally
3. Position the OML perpendicular to the IR
4. Tuck the patient’s chin more

A. 1 only
B. 2and 3 only
C. 3 and 4 only
D. 2, 3, and 4 only

Answer 15

D. 2, 3, and 4 only

2. Angle the CR caudally
3. Position the OML perpendicular to the IR
4. Tuck the patient’s chin more