PROCEDURES- Skull

Question 1

Which cranial bone is the most posterior?

Answer 1

occipital bone

Question 2

Which projection best demonstrates the maxillary sinuses?

Answer 2

parietoacanthial (waters method)

Question 3

A blow-out fracture involves the

Answer 3

floor of the orbit

Question 4

Which of the following are facial bones? 1. vomer 2. mandible 3. ethmoid

Answer 4

1 and 2

Question 5

Which of the following bones are categorized as cranial bones? 1. maxilla 2. ethmoid 3. parietal

Answer 5

2 and 3

Question 6

What common positioning landmark is located on the anterior, lower margin of the mandible?

Answer 6

mental protuberance

Question 7

When taking a PA Axial projection (Caldwell method) of the skull, the central ray is directed

Answer 7

15 degrees caudad

Question 8

Which radiographic baseline is used to position the PA Axial projection (Caldwell method) of the cranium?

Answer 8

OML

Question 9

Which paranasal sinuses are best demonstrated on the PA Axial projection (Caldwell method)? 1. maxillary 2. frontal 3. ethmoid

Answer 9

2 and 3

Question 10

Which paranasal sinuses are demonstrated by the lateral projection? 1. sphenoid 2. frontal 3. ethmoid

Answer 10

1, 2, and 3

Question 11

Which projection of the facial bones requires the CR to exit the acanthion?

Answer 11

PA Axial (waters method)

Question 12

Which facial bone often sustains fractures in pairs?

Answer 12

mandible

Question 13

Which of the following projections demonstrates the sphenoid sinus?

Answer 13

lateral

Question 14

What cranial structures are best demonstrated by the SMV projection?

Answer 14

the cranial base

Question 15

The sella turcica is located on the __ bone

Answer 15

sphenoid

Question 16

When the right and left halves of the skull do not appear symmetrical on a PA or AP projection, this is a sign that the

Answer 16

sagittal plane is not perpendicular to the IR

Question 17

The bony prominence on the frontal bone between the eyebrows is called the

Answer 17

glabella

Question 18

The petrous pyramid is a portion of which bone?

Answer 18

temporal bone

Question 19

Which projection of the cranium demonstrates the petrous ridges within the orbits?

Answer 19

PA

Question 20

Which facial bones help to form the hard palate of the mouth?

Answer 20

palatine

Question 21

Where is the sagittal suture?

Answer 21

between the right and left parietal bones

Question 22

Which of the following is the positioning landmark located at the junction of the nose and the upper lip?

Answer 22

acanthion

Question 23

Which projection demonstrates all of the paranasal sinuses?

Answer 23

lateral

Question 24

Which cranial bone has a dense, pyramid of bone that houses the middle and inner structures?

Answer 24

temporal bone

Question 25

The patient is in a prone, oblique position with the midsagittal plane of the head parallel to the IR and the interpupillary line perpendicular to the IR. The CR is directed perpendicular to to enter 2 inches superior to the EAM. What projection of the cranium is demonstrated in the radiograph?

Answer 25

lateral