Arrt Section 4: Imaging Procedures, Head

Front 1

Name the paired cranial bones.

Back 1

Parietal

Temporal

Front 2

Name the unpaired facial bones.

Back 2

Mandible

Vomer

Front 3

What is the name of the suture separating the frontal bone from the parietal bones?

Back 3

Coronal suture

Front 4

Name the three processes of the temporal bone.

Back 4

Mastoid

Zygomatic

Styloid

Front 5

The pituitary gland is seated in which cranial bone?

Back 5

Sphenoid

Front 6

What is the name of the prominence on the squamous portion of the frontal bone that may be used as a positioning landmark?

Back 6

Glabella

Front 7

Label the atomic structures seen in this illustration.

Back 7

1. Temporal bone

2. Bregma (intersection on coronal and sagittal sutures)

3. Glabella

4. Zygoma

5. Anterior nasal spine

Front 8

The parietal bones meet midline to form what suture?

Back 8

Sagittal

Front 9

A large opening in the base of the occipital bone through which the spinal cord passes is the _________.

Back 9

Foramen magnum

Front 10

The paranasal sinuses lie in which cranial bones? Which is the most posterior paranasal sinus?

Back 10

Frontal

Ethmoid

Maxillae

Sphenoid

Sphenoid

Front 11

Unossified points at the junction of sutures on an infant's skull are called __________.

Back 11

Fontanels

Front 12

What is the name of the point formed at the junction of the parietal bone, temporal bone, and greater wing of the sphenoid bone?

Back 12

Pterion

Front 13

What two bones form the nasal septum?

Back 13

Ethmoid

Vomer

Front 14

What is a suture formed by the temporal and parietal bones?

Back 14

Squamousal

Front 15

What bone(s) separate the oral and nasal cavities?

Back 15

The 2 maxillae

Front 16

What external landmark corresponds to the nasal frontal suture?

Back 16

Nasion

Front 17

What are the names of the processes found on the mandible and maxilla that serve to provide anchors for the roots of the teeth?

Back 17

Alveolar processes

Front 18

The process extending superiorly and anteriorly from the ramus of the mandible is the __________.

Back 18

Coronoid process

Front 19

What facial bone is quadrilateral in shape and his four processes: frontosphenoidal, orbital, temporal, and maxillary?

Back 19

Zygoma

Front 20

What structures are indicated in this image? What position and projection was the image made?

Back 20

1. Frontal sinus

2. Maxillary sinus

3. Zygoma

Waters position

Parietoacathial projection

Front 21

The process extending superiorly and posteriorly from the ramus of the mandible is the __________.

Back 21

Condyloid process

Front 22

What degree angle is formed by the petrous ridges and MSP in the mesocephalic shaped skull?

Back 22

47°

Front 23

What is the vertical portion of the mandible called?

Back 23

Ramus

Front 24

What skull projection is most commonly used to demonstrate the occipital bone?

Back 24

AP axial/Towne method

Front 25

The lateral projection of the skull utilizes __________ the baseline.

Back 25

IOML

Front 26

When viewing a lateral skull radiograph, incorrect positioning caused by tilt is evidenced by what structures is not being superimposed?

Back 26

Supraorbital margins

Mandibular body

Front 27

Where should the petrous ridges be projected in the PA axial (Caldwell) projection of the skull using a 15° caudal tube angle?

Back 27

The lower 1/3 of the orbits

Front 28

When viewing a lateral skull radiograph, incorrect positioning caused by rotation is evidence by what structure is not being super imposed?

Back 28

Mandibular rami

EAMs

Sella turcica

Front 29

Where should the petrous ridges be projected in the PA projection of the skull with the OML perpendicular to the IR?

Back 29

Filling the orbits

Front 30

What projection(s) will demonstrate the dorsum sella and posterior clinoid processes within the foramen magnum?

Back 30

AP axial projection (Towne)

PA axial projection (Haas)

Front 31

What is the single best projection to demonstrate the facial bones?

Back 31

Parietoacanthial projection (Waters)

Front 32

What is the CR for lateral nasal bones? For lateral facial bones?

Back 32

1/2" distal to the nasion

Mid-zygoma

Front 33

In a correctly position Waters, where should the petrous ridges be seen with respect to the maxillary sinuses?

Back 33

Below the sinuses

Front 34

The oblique inferosuperior (tangential) projection of the zygomatic arches requires that the IOML be __________ to the IR, and that the head be rotated __________ degrees toward the __________ side.

Back 34

Parallel

15°

Affected

Front 35

For the PA axial projection of the mandible, which direction does the tube need to be angled in order to demonstrate condyles and TMJ area?

Back 35

Cephalad

Front 36

If the petrous ridges are seen super imposed on the inferior aspect of the maxillary sinuses in the parietoacanthial projection, what change in position is necessary?

Back 36

Lift the chin more

Front 37

What projection demonstrates all the paranasal sinuses?

Back 37

Lateral

Front 38

The PA projection, utilizing 15° OML adjustment from the horizontal, is used to demonstrate which sinus group(s)?

Back 38

Frontal and ethmoid

Front 39

The SMV projection requires that the __________ baseline be parallel to the IR, and demonstrates the __________, __________, and __________ sinuses.

Back 39

IOML

Sphenoid

Ethmoid

Maxillary

Front 40

The open mouth Waters demonstrates which sinuses through the open mouth?

Back 40

Sphenoid