Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Rad 112 > Skull > Flashcards

Skull Flashcards

0
Q

Orbits are larger on AP or PA Caldwell

A

AP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
1
Q

Where are petris pyramids on a straight AP? Caldwell? Towne? Waters?

A

AP- fills the orbits
Caldwell- lower 1/3 of orbits
Towne- above orbits into the frontal
Waters - petrous ridge below the maxillary sinuses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does modified waters demonstrate best

A

Orbital floors (blowout fx)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Where is the petrous ridges in the modified waters

A

Lower 1/3 of maxillary sinuses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What line is perpendicular to IR for a lateral

A

IPL

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Where is CR entrance for lateral skull? Lateral facial bones? Lateral nasal?

A

Lateral skull - 2” above EAM
Lateral facial and orbits - zygoma (1/2 between outer canthus and EAM
Lateral nasal - 1/2” below nasion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

A MVA victim on back board. dr orders a skull exam. Cannot move pt. Pts neck is hyperextended so that his AML is perpendicular to the IR. What should your angle and enter encrypt be to obtain a towne

A

30° +7° + 10° = 47° Caudad enter at the glabbella

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Pt came from the ER and you suspect a spinal injury. Pt is supine and can’t be turned prone. What would it take to achieve the waters method for facial bones

A

Reverse waters method (acanthioparital projection)
Enter CR at acanthion
CR angled so it is parallel to MML

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Two most symmetrical structures in the skull

A

Mastoid processes

Orbital rims

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which modality is the modality of choice if the dr suspects skeletal metastasis

A

Nuclear medicine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What gland sits on the sella turcica of the sphenoid bone

A

Pituitary

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

How can you tell if the waters image is rotated

A

Lateral margins of the skull to the lateral margin of the orbits (same distance on both sides)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Nasal bone exams include a waters and a ________ to evaluate for a bony nasal bone deviation

A

Caldwell

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How should we do all head work ideally

A

Erect

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What should we do for pediatric and peds pts for skull work to get images the first time

A

Immobilization devices
Decrease time
Increase mA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are fontanels

A

Soft spots

Incomplete ossification of the skull

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are your two cranial bones that contain many air cells

A

Temporal and ethmoid

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How do we avoid rotation and tilt of the skull

A

Immobilization devices
Communication
Make pt as comfort as possible

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is the top floppy part of the outer ear called

A

Auricle / pinna

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the part on the outside of the EAM

A

Tragus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What plane divides the skull into right and left sections

A

Sagital

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Petrous pyramids sit at the angle of ________° with the MSP for a braccicephalic (short broad head)

A

54°

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Petrous pyramids sit at what angle to the MSP For a mesocephalic (normal) head

A

47°

23
Q

Petrous pyramids sit at what angle to the MSP for a dolichocepgalic (skinny head) head

A

40°

24
Q

Temporal bones contain the thickest and most dence structure of the skull called

A

Petrous pyramids

25
Q

For a ________ method or projection the OML and MSP are perpendicular to the IR CR enters 2” above the glabbella and is angled 30° caudad

A

Towne

26
Q

Which bones make up the skull cap (calvarium) of the cranium

A

Frontal
Right and left parietal
Occipital

27
Q

Which bones make up the floor of the cranium

A

Right and left temporal
Sphenoid
Ethmoid

28
Q

What is the prominent bump or protuberance at the inferoposterior portion o the skull

A

Inion

29
Q

The shallow depression just posterior to the base of the Dorsum sellae and anterior to the Foramen magnum is the

A

Clivus

30
Q

Which small section of bone is located superior to the cribform plate

A

Crista galli

31
Q

What are the two terms for the small irregular bones found in the adult skull sutures

A

Sutural and wormian

32
Q

Caused by a blow to the cheek resulting in a fx of the zygoma in three places ( orbital processes, maxillary processes, and arch)

A

Tripod fx

33
Q

Underangulation or insufficient flexion of neck on AP Towne is represented by what

A

The Dorsum sellae is superior to the foramen magnum

34
Q

Over angulation or excessive flexion of neck on an AP Towne is recognize how

A

Posterior arch of c1 and Dorsum sellae are superimposed

35
Q

How can you tell if there is rotation on a lateral skull

A

Rotation - separation of the EAM, Mandibular rami, and greater wings of sphenoid, and orbital roofs are not superimposed.

36
Q

What bones lie anteriorly in the medial aspect of the orbit

A

Lacrimal bones

37
Q

Facial bone that possesses a vertical and horizontal portion

A

Palatine

38
Q

The skull consists of how many bones? How many cranium? How many facial?

A

22 bones
8 cranium bones
14 facial bones

38
Q

Name the bone that is often referred to as the ploughshare

A

Vomer

39
Q

Which bones would be considered “l” shaped

A

Palatine

40
Q

Routine views for facial bones

A

Lateral
Pa Caldwell
Waters
Modified waters

41
Q

PA Caldwell for facial bones demonstrates what

A 
Petrous ridges in the lower 1/3
Bony nasal septum
Anterior spine
Maxillae
Zygomatic bones
42
Q

Waters method for facial bones demonstrates what

A 
Maxillae
Inferior orbital margins
Nasal septum
Zygomatic bones and arches
Anterior nasal spine
Petrous ridges below the maxillary sinuses
43
Q

What make up the bony nasal septum

A

Perpendicular plate of ethmoid (superiorly)

Vomer (inferiority)

44
Q

Radiographs for nasal bones

A

L&R laterals
Waters
Superoinferior

45
Q

What other facial bone projection or method demonstrates the bony nasal septum

A

Pa Caldwell

46
Q

What are the thinnest most fragile bones of the body

A

Nasal and lacrimal

47
Q

What projections are done for a trauma skull series

A

X table lateral
AP Caldwell
Towne

48
Q

What two projections or methods from a basic skull exam can best demonstrate the petrous pyramids with the least amount of superimposition

A

Towne

SMV

49
Q

What is the anchor bone for all 8cranial bones

A

Sphenoid

50
Q

When looking at a lateral skull what can be determined by looking at the sella turcica

A

Inter cranial air fluid levels
Rotation
Intercranial lesions
Pituitary gland enlargement

51
Q

What is the degree between the OML and the IR for waters and modified waters

A

Waters 37°

Modified 55°

52
Q

What are the projections methods used to view zygomatic arches

A

SMV
Tangential obl inferiosuperior projection
Modified Towne

53
Q

Modified Towne enters where

A

1” above glabbella

54
Q

What’s the area called in the midline above the supercilliary arch

A

Glabbella

55
Q

Reid’s baseline is also called

A

IMOL

Rad 112 (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions