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Powerpoint quiz me Flashcards

1
Q

Which cranial bone houses the organs for hearing and equilibrium?

A

temporal bone

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2
Q

The jugular foramen are located on the _____ bone.

A

temporal bone

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3
Q

which cranial bone makes up the nasal septum?

A

ethmoid

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4
Q

Which aspect of the skull is most vulnerable to fracture?

A

Squamous portion of occipital bone

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5
Q

Which landmark(s) corresponds with the level of the petrous ridge?

A

TEA

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6
Q

The pituitary gland (hypophysis cerebri) is associated with and protected by the _________ bone.

A

sella turcica/sphenoid

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7
Q

The ethmoid notch is part of which cranial bone?

A

frontal bone

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8
Q

Which cranial bone possesses the superior nasal conchae?

A

ethmoid bone

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9
Q

Which cranial bone possesses the zygomatic process?

A

temporal bone

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10
Q

How is rotation evident on a lateral projection of the skull?

A

when structure appears anterior or posterior

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11
Q

Which technical considerations is most critical for demonstrating air and/or fluid levels within the cranium?

A

horizontal x-ray beam

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12
Q

A radiograph of a lateral projection of the cranium reveals that the orbital roofs (plates) are not superimposed—one is slightly superior to the other. Which of the following positioning errors led to this radiographic outcome?

A

tilt

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13
Q

A radiograph of a lateral cranium reveals that the mentum was cut off from the bottom of the radiograph. A 24 × 30-cm (10 × 12-inch) IR was used, and it was placed crosswise. What must be altered if a repeat exposure is performed?

A

IR must be placed lengthwise

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14
Q

A patient comes to radiology for a routine study of the cranium. He is unable to flex his head and neck sufficiently to place the OML perpendicular to the IR for the AP axial projection. What should the technologist do to compensate for this problem without creating excessive magnification of the occipital bone?

A

Alignment must change from OML to IOML and EAM (IOML perpendicular to IR), while using a tube angle of 37 degrees caudal

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15
Q

A patient comes to radiology with a possible bone cyst within the squamous portion of the frontal bone. Which projection(s) would best demonstrate this region with a minimal amount of distortion of the frontal bone?

A

PA axial with a tube angle of 15 degrees caudal

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16
Q

A radiograph of a posteroanterior (PA) axial projection (Caldwell method) of the cranium reveals that the petrous ridges are located at the level of the lower one third of the orbits. The technologist performed this projection with the CR angled 15° caudal to the orbitomeatal line (OML). How must positioning be altered if a repeat exposure is performed?

A

Nothing, the position is correct

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17
Q

Which cranial projection(s) will best demonstrate a possible basilar fracture?

A

SMV

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18
Q

Which positioning line should be perpendicular to the plane of the IR for the AP axial (Towne) projection with a 37° caudad CR angle?

A

IOML and EAM

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19
Q

Which positioning error most often results in a repeat exposure of a cranial position?

A

rotation

20
Q

The anterior nasal spine is an aspect of the ____ bone

A

maxillary

21
Q

Which cranial bone makes up an aspect of the bony nasal septum?

A

ethmoid

22
Q

The palatine process is an aspect of the ____ bone

A

maxillary

23
Q

The point of union between both halves of the mandible is termed

A

symphysis menti

24
Q

Which of the following bones makes up most of the lateral wall of the orbit?

A

zygomatic

25
Q

There is a ___ difference between the orbitomeatal and infraorbitomeatal lines

A

7-8 degrees

26
Q

Which bones of the skull articulate with 5 cranial bones?

A

parietal bone

27
Q

true or false: Metastatic osteoblastic lesions of the cranium are proliferative bony lesions of
increased density

A

true

28
Q

Which projection of the skull will best demonstrate signs of a pituitary adenoma?

A

AP Axial Towne

29
Q

How much CR angle is required for the AP axial projection of the skull if the IOML is perpendicular to the IR?

A

37 degrees

30
Q

A patient comes to radiology with a possible bone cyst within the squamous portion of the frontal bone. Which projection would best demonstrate this region with a minimal amount of distortion of the frontal bone?

A

PA projection of the skull

31
Q

What projection of the skull requires the sagittal plane to be parallel to the image receptor (IR) and the interpupillary line to be perpendicular to the IR?

A

lateral

32
Q

Where are the petrous ridges shown on a 0 degree PA view?

A

at the level of the supraorbital margin

33
Q

Where are the petrous ridges shown on a 15 degree Caldwell PA view?

A

lower 1/3 of the orbits

34
Q

Which variation of the PA (axial) projection of the skull has been performed if the petrous ridges are at the level of the supraorbital margin?

A

PA 0 degrees

35
Q

Which positioning error is present if the mandibular condyles are seen within the petrous portion of the temporal bone on an SMV projection?

A

insufficient extension

36
Q

A fracture of the floor of the orbit due to a direct strike to the base is termed a

A

blowout fracture

37
Q

What is the positioning error for a parietoacanthial projection if the petrous ridges are within the maxillary sinuses?

A

excessive flexion

38
Q

A radiograph of a PA Caldwell projection reveals that the petrous ridges are projected into the lower one third of the maxillary sinuses. Which modification(s) should be made during the repeat exposure to produce a more diagnostic image?

A

decrease extension of the head

39
Q

The modified Law method for TMJs requires a ____ rotation of the skull and a ____ angle of the CR.

A

15 degree;15 degree caudad

40
Q

Which skull positioning line is perpendicular to the IR for a superoinferior tangential (axial) projection of the nasal bones?

A

GAL

41
Q

Why is the chin extended for an axiolateral oblique projection of the mandible?

A

to prevent superimposition of the gonion with the cervical spine

42
Q

What is the angle between the MSP and the plane of the IR (from a lateral position) for the parietoorbital oblique projection for the optic foramen?

A

53 degrees

43
Q

How much must the skull be rotated from a lateral
position to best demonstrate the body of the mandible for the axiolateral oblique projection?

A

30 degrees

44
Q

How much is the CR angled for an AP axial projection of the mandible if the IOML is perpendicular to the IR?

A

42 degrees

45
Q

true or false: The axiolateral oblique (modified Law) projection for TMJ requires a CR angle of 15° caudad and a 15° downward rotation of the skull from a lateral skull position.

A

true

46
Q

Which aspect of the skull is most vulnerable to fracture?

A

Squamous portion of occipital bone

47
Q

A patient comes to radiology with a possible bone cyst within the squamous portion of the frontal bone. Which projection would best demonstrate this region with a minimal amount of distortion of the frontal bone?

A

PA axial with a 25 degree caudal

:] (89 decks)

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