Filters
Question type

Study Flashcards

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 central ray 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

E) A) and B)
F) A) and D)

Correct Answer

verifed

verified

A PA axial cranial projection (Caldwell method) with poor positioning demonstrates the petrous ridges inferior to the infraorbital margins. How was the patient positioned for such a projection to be obtained? 1) The patient's chin was not tucked enough. 2) The OML was not positioned perpendicular to the IR. 3) The patient's face was rotated toward the right side. 4) The patient's head was tilted.


A) 1 and 2 only
B) 2 only
C) 2 and 3 only
D) 4 only

E) All of the above
F) C) and D)

Correct Answer

verifed

verified

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 central ray was centered too superiorly.

E) B) and D)
F) C) and D)

Correct Answer

verifed

verified

For a PA cranial projection, the 1) midsagittal plane is positioned parallel with the IR. 2) OML is aligned perpendicular to the IR. 3) central ray is aligned perpendicular to the IR. 4) central ray 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

E) None of the above
F) B) and D)

Correct Answer

verifed

verified

B

A poorly positioned parietoacanthial facial bone projection (Waters method) demonstrates the petrous ridges within the maxillary sinuses. How was the positioning setup mispositioned for such a projection to be obtained? 1) The MML was not aligned perpendicular to the IR. 2) The patient's head was rotated toward the left side. 3) The patient's chin was tucked more than needed. 4) The central ray was angled too cephalically.


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

E) A) and D)
F) B) and D)

Correct Answer

verifed

verified

For a PA axial cranial projection (Caldwell method) , the 1) midsagittal plane is aligned perpendicular to the IR. 2) central ray is angled 15 degrees caudally. 3) OML is aligned perpendicular to the IR. 4) central ray is centered to the nasion.


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

E) None of the above
F) B) and C)

Correct Answer

verifed

verified

D

A patient is 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 central ray cephalically.
B) The projection cannot be obtained.
C) Align the central ray parallel with the MML.
D) Elevate the patient's chin as far as possible and use a perpendicular central ray.

E) A) and B)
F) A) and C)

Correct Answer

verifed

verified

For an AP axial cranial projection (Towne method) , the 1) midsagittal plane is aligned with the long axis of the image receptor's longitudinal axis. 2) midsagittal plane is positioned parallel with the IR. 3) midcoronal plane is positioned parallel with the IR. 4) OML is aligned perpendicular to the IR.


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

E) A) and B)
F) C) and D)

Correct Answer

verifed

verified

An acanthioparietal facial bone projection (Waters method) with poor positioning demonstrates the petrous ridges too far inferior to the maxillary sinuses. How could the positioning setup be adjusted for an optimal projection to be obtained? 1) Depress the patient's chin. 2) Align the central ray parallel with the MML. 3) Align the MML perpendicular to the IR. 4) Adjust the central ray angulation caudally.


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

E) B) and C)
F) A) and B)

Correct Answer

verifed

verified

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 central ray perpendicular to the IOML.
B) Extend the patient's neck as far as possible and use a perpendicular central ray.
C) Align the central ray perpendicular to the OML.
D) The projection cannot be obtained.

E) A) and C)
F) C) and D)

Correct Answer

verifed

verified

For a submentovertex (SMV) cranial projection (Schueller method) , the 1) central ray is aligned perpendicular to the IR. 2) central ray is centered to the midsagittal plane at a level 0.75 inch (2 cm) anterior to the level of the EAM. 3) IOML is parallel with the IR. 4) midsagittal plane is perpendicular to the IR.


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

E) None of the above
F) B) and D)

Correct Answer

verifed

verified

A PA cranium projection demonstrating the petrous ridges superior to the supraorbital margins


A) was obtained with the patient's chin tucked more than the required amount.
B) was obtained with the OML perpendicular to the IR.
C) will also demonstrate the internal acoustic meatus.
D) will require the patient to increase the amount the chin is tucked to obtain an optimal image.

E) B) and C)
F) A) and D)

Correct Answer

verifed

verified

For a lateral cranial projection, the 1) midsagittal plane is positioned parallel with the IR. 2) IPL is positioned parallel with the IR. 3) IOML is perpendicular to the front edge of the IR. 4) central ray is centered 2 inches (5 cm) anterior to the EAM.


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

E) B) and C)
F) A) and D)

Correct Answer

verifed

verified

A lateral cranium projection obtained with the top of the patient's head tilted away from the IR will demonstrate all of the following except the


A) left side greater wing of the sphenoid inferior to the right side greater wing.
B) atlas's vertebral foramen.
C) inferior cranial cortices without superimposition.
D) right EAM inferior to the left EAM.

E) B) and C)
F) All of the above

Correct Answer

verifed

verified

Which of the following statements is not true about an SMV cranium projection (Schueller method) ?


A) The IOML should be placed parallel to the IR for the projection.
B) Positioning the midsagittal plane perpendicular to the IR prevents cranial tilting.
C) The dens is centered within the exposure field.
D) If the resulting image demonstrates the mandibular mentum posterior to the ethmoid sinuses, the central ray can be angled caudally to obtain an optimal projection.

E) A) and B)
F) B) and D)

Correct Answer

verifed

verified

A less than optimal PA axial cranium projection (Caldwell method) that requires the chin to be elevated to obtain optimal positioning will


A) demonstrate unequal distance from the lateral orbital margins to the lateral cranial cortices on both sides.
B) demonstrate the superior orbital fissures within the orbits.
C) demonstrate the petrous ridges and pyramids in the superior half of the orbits.
D) need the IOML to be aligned perpendicular to the IR.

E) B) and C)
F) None of the above

Correct Answer

verifed

verified

A patient requires a trauma AP axial cranial projection (Caldwell method) . When the central ray is aligned with the OML, the tube angle reads 13 degrees caudad. What central ray angle should be used?


A) 15 degrees caudad
B) 2 degrees caudad
C) 2 degrees cephalad
D) 28 degrees caudad

E) B) and C)
F) C) and D)

Correct Answer

verifed

verified

A PA cranial projection with accurate positioning demonstrates 1) equal distances from the lateral orbital margin to the lateral cranial cortices on each side. 2) the anterior clinoids and dorsum sellae superior to the ethmoid sinuses. 3) the petrous ridges horizontally through the lowest third of the orbits. 4) the internal acoustic meatus horizontally through the orbital center.


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

E) None of the above
F) A) and B)

Correct Answer

verifed

verified

C

An SMV cranial projection (Schueller method) with accurate positioning demonstrates 1) the nasal fossae just anterior to the ethmoid sinuses. 2) the mandibular mentum slightly posterior to the ethmoid sinuses. 3) an equal distance from the mandibular ramus to the lateral cranial cortex on both sides. 4) the bony nasal septum aligned with the long axis of the exposure field.


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

E) B) and D)
F) A) and D)

Correct Answer

verifed

verified

A PA cranial projection with poor positioning demonstrates the petrous ridges too superior to the supraorbital margins. How was the patient positioned for such a projection to be obtained? 1) The patient's chin was inadequately tucked. 2) The OML was not positioned perpendicular to the IR. 3) The patient's face was rotated toward the right side. 4) The patient's head was tilted.


A) 1 and 2 only
B) 2 only
C) 3 only
D) 2 and 4 only

E) A) and C)
F) A) and B)

Correct Answer

verifed

verified

Showing 1 - 20 of 44

Related Exams

Show Answer