Radiography: Head

Question 1

When used in the context of radiographic positioning techniques, what does the term cephalic refer to?

Answer 1

Angled towards the head

Question 2

What part of the anatomy is referred to as the lateral canthus?

Answer 2

The outer angle of the eye

Question 3

A patient has just undergone a series of radiographs of their facial bones. The radiologist notes a blowout fracture. What anatomical component is affected by a blowout fracture?

Answer 3

The orbital floor

Question 4

What is the largest facial bone?

Answer 4

The mandible

Question 5

The ____________ is the point located at the junction of the nose and the upper lip.

Answer 5

acanthion

Question 6

When performing an anteroposterior axial projection/view (the Towne method) of the skull, the central ray of the X-ray beam should be angled ________ caudad to center of the image receptor, through the foramen magnum, at the level of the external auditory meatus.

Answer 6

30°

Question 7

When performing a parietoacanthial projection/view (the Waters method), the mentomeatal line should be perpendicular to the image receptor, while the orbitomeatal line forms a ________ angle to the image receptor.

Answer 7

37°

Question 8

When performing a posteroanterior axial projection/view (the Caldwell method) of the cranium, the orbitomeatal should be perpendicular to the image receptor, while the central ray of the X-ray beam should be angled ________ caudad to the center of the image receptor and exist at the nasion.

Answer 8

15°

Question 9

Which skull radiography positioning baseline extends from the outer corner of the eye to the external auditory meatus?

Answer 9

The orbitomeatal line

Question 10

When performing a submentovertex (full basal) projection/view of the skull, what positioning baseline is parallel to the plane of the image receptor?

Answer 10

The infraorbitomeatal line

Question 11

In general, trauma radiography requires orthogonal views to be taken, specifically 2 projections taken at ____________ while true CR-part-IR alignment is maintained.

Answer 11

90° apart (or at right angles)

Question 12

Certain positioning lines are important in cranial radiography, which are formed by connecting certain facial landmarks to the midpoint of the ________________

Answer 12

external auditory meatus (EAM)

Question 13

Which radiographic projection/view is used to BEST visualize the sphenoid sinuses?

Answer 13

The submentovertical (SMV) view

Question 14

When performed correctly, what radiographic projection/view features the petrous pyramids filling the lower one-third of the orbits?

Answer 14

The posteroanterior (Caldwell) view

Question 15

Which radiographic projection/view is used to BEST visualize the maxillary sinuses?

Answer 15

The Waters view

Question 16

When positioning a patient for a lateral facial bone X-ray, with the lateral aspect of their head resting against the upright bucky, the midsagittal plane should be ________________to and the interpupillary line should be ________ to the image receptor.

Answer 16

parallel to; perpendicular

Question 17

If the Rheese projection/view of the orbits is performed correctly, the optic foramen should be projected into which quadrant?

Answer 17

The lower outer quadrant

Question 18

. When performing the axiolateral oblique temporomandibular joint (TMJ) projection/view, the central ray of the X-ray beam should be angled in a caudad direction and centered 5 cm superior to and 1 cm anterior to the external auditory meatus.

Answer 18

25° to 30°

Question 19

Because trauma patients often arrive in the imaging department in a supine position, what projections are commonly required to serve as lateral projections?

Answer 19

Horizontal beam (cross-table) projections

Question 20

When performing the axiolateral oblique temporomandibular joint (TMJ) projection/view, the central ray of the X-ray beam should be angled ____________ in a caudad direction and centered 2 inches (5 cm) superior to and ½ inch (1.3 cm) anterior to the external auditory meatus.

Answer 20

25° to 30°

Question 21

Why are open- and closed-mouth axiolateral temporomandibular joint (TMJ) projections often taken?

Answer 21

To show the TMJ’s range of motion

Question 22

Which facial bone(s) is/are most often fractured?

Answer 22

The nasal bones

Question 23

What projection/view is used to demonstrate all 4 paranasal sinuses?

Answer 23

The lateral

Question 24

Which facial bone(s) is/are unpaired?

Answer 24

The mandible and vomer