Deck 14: Radiography of the Temporomandibular Joint

Question 1

When examining the TMJ, one disadvantage of computed tomography is that this type of scan does not include images of the:

A)external meatus of the ear
B)mandibular condyle
C)articular disc
D)articular eminence

Answer 1

articular disc

Question 2

Complications may occur with:

A)arthrography
B)MRI
C)CT
D)a panoramic radiograph

Answer 2

arthrography

Question 3

The major cause of TMJ disorders is the __________.

Answer 3

articular disc

Question 4

For the transcranial technique, the central ray is aimed _____ inches above and _____ inch in front of the external auditory meatus.

Question 5

A conventional panoramic projection will show both the right and left joints in the:

A)lateral plane
B)axial plane
C)cross-sectional plane
D)frontal plane

Question 6

Four views of the TMJ can be seen by:

A)MRI
B)CT
C)arthrography
D)the transcranial technique

Question 7

Images that are opaque on an image obtained by magnetic resonance imaging (MRI)have a _________ hydrogen density and a _________ signal.

Question 8

Identify the most common extraoral view used to examine the temporomandibular joint after the panoramic examination:

A)transcranial projection
B)submentovertex projection
C)skull projection
D)MRI

Question 9

On the average, the exposure time at 65 kVp and 10 mA for a transcranial projection is:

A)7 to 10 impulses
B)7 to 10 seconds
C)7 to 15 impulses
D)7 to 15 seconds

Question 10

The ________ projection can be used to view the TMJ from the axial plane.

Question 11

The anatomic components not visible on a conventional radiograph of the TMJ are the:

A)neck of the condyle and the external auditory meatus
B)articular disc and the internal and external pterygoid muscles
C)articular fossa and the mandibular condyle
D)articular disc and the mandibular condyle

Question 12

In TMJ radiography it is preferable to take films in the __________ positions.

Question 13

_________ enables viewing of an area in three planes.