Ch. 11 - Cranium, Facial Bones, and Paranasal Sinuses Final Test

Which xray best shows the Sella Turcica and Dorsum Sellae?

Lateral

Name the 3 aspects of the Temporal Bone.

1. Petrous

2. Mastoid

3. Sqamous

Name the 4 Sutures of the adult skull.

1. Coronal

2. Squamousal

3. Lambdoidal

4. Sagittal

Name the 4 Junction Points of the adult skull.

1. Bregma

2. Lambda

3. Pterion (R and L)

4. Asterion (R and L)

Name the 4 Fontaels of the infant skull.

1. Anterior

2. Poaterior

3. Sphenoid (R and L)

4. Mastoid (R and L)

Name the 3 Auditory Ossicles.

1. Malleus

2. Incus

3. Stapes

What 2 sensory functions occur in the Inner Ear?

1. Hearing

2. Equilibrium

Matching the Following:

A.___ Neoplasia

B.___ Otosclerosis

C.___ Mastoiditis

D.___ Acoustic Neuroma

E.___ Polyp

F.___ Cholesteatoma

1. Bacterial infection of the mastoid process

2. growth arising from a mucous membrane

3. Hereditary disease involving excessive bone formation of the middle and inner ear

4. Benign, cystlike mass or tumor of the middle ear

5. New or abnormal growth

6. Benign tumor of the auditory nerve sheath

A. = 5

B. = 3

C. = 1

D. = 6

E. = 2

F. = 4

Which one of the following radiographic appearances pertains to an acoustic neruoma?

A. expansion of the internal acoustic canal

B. bone destruction within the middle ear

C. increased density in the sinus

D. sinus mucosal thickening

A. expansion of the internal acoustic canal

Which one of the following imaging modalities best demonstrates otosclerosis?

A. nuclear medicine

B. CT

C. conventional radiography

D. sonography

B. CT

Which of the following bones is not a facial bone?

A. middle nasal conchae

B. vomer

C. lacrimal bone

D. mandible

A. middle nasal conchae

What is the largest immovable bone of the face?

maxilla

Which of the following bones does not articulate with the zygomatic bone?

A. temporal

B. maxilla

C. frontal

D. sphenoid

D. sphenoid

Match each of the following.

A.___ Gonion

B.___ Mandibular Notch

C.___ Body

D.___ Condyloid Process

E.___ Coronoid Process

F.___ Ramus

G.___ Mentum

H.___ Symphysis Menti

1. Vertical portion of mandible

2. The chin

3. Mandibular Angle

4. The point of union between both halves of the mandible

5. Bony process located anterior to the mandibular notch

6. Posterior process of the upper ramus

7. U-shaped notch

A. = 3

B. = 8

C. = 6

D. = 7

E. = 5

F. = 1

G. = 2

H. = 4

Which one of the facial bone openings in formed by a cleft between the greater and lesser wings of the sphenoid bone?

A. Superior orbital fissure

B. Optic foramen

C. Inferior orbital fissure

D. Optic canal

A. Superior orbital fissure

What is another term for the second cranial nerve?

A. Olfactory nerve

B. Optic nerve

C. Maxillary nerve

D. trigeminal nerve

B. Optic nerve

The drainage pathway for the paranasal sinuses is called the:

A. Uncinate process

B. Ostiomental complex

C. Paranasal meatus

D. Lateral masses

B. Ostiomeatal complex

Which position is most often used when performing a CT study of the sinuses?

A. Supine

B. Prone

C. Erect

D. Supine with 20 degree oblique of skull from AP position

B. Prone

Match the 3 classifications of the skull with the correct description.

1. Dolichocephalic

2. Brachycephalic

3. Mesocephalic

A. Width 80% or more than length

B. Width Less than 75% of length

C. Width between 75% and 80% of length

1. = B

2. = A

3. = C

What is the name of an "Average" skull?

Mesocephalic

What are the 2 most common error made during skull radiograph?

1. Rotation

2. Tilt

Bilateral horizontal fracture of the maxillae describes a ______________ fracture.

A. LeFort

B. Blowout

C. Tripod

D. Contrecoup

A. LeFort

Which one of the following imaging modalities is the most common neuroimaging procedure performed for the cranium?

A. CT

B. Ultrasound

C. MRI

D. Nuclear Medicine

A. CT

Which of the following imaging modalities is commonly performed on neonates with a possible intracranial hemorrhage?

A. CT

B. Ultrasound

C. MRI

D. Nuclear Medicine

B. Ultrasound

Which of the following imaging modalities is most commonly performed to evaluate patients for Alzheimer's disease?

A. CT

B. Ultrasound

C. MRI

D. Nuclear Medicine

D. Nuclear Medicine

Which one of the clinical indications may require an increase in manual exposure factors?

A. Advanced Paget's disease

B. Metastatic neoplasm

C. Multiple myeloma

D. Basal skull fracure

A. Advanced Paget's disease

When using a 30 degree caudad angle for the AP Axial (towne method) projection of the skull, which positioning line should be perpendicular to the IR?

A. OML

B. IOML

C. GAL

D. AML

A. OML

A properly positioned AP Axial (towne method) projection should place the dorsum sellae into the middle aspect of the:

A. Orbits

B. Clivus

C. Foramen Magnum

D. Anterior arch of C1

C. Foramen Magnum

A lack of symmetry of the Petrous Ridges indicated which of the following problems with a radiograph of an AP Axial Projection?

A. Tilt

B. CR angle

C. Flexion or Extension

D. Rotation

D. Rotation

Which specific positioning error is present if the mandibular rami are not superimposed on a lateral skull radiograph?

A. Tilt

B. Rotation

C. Overflexion of head and neck

D. Incorrect CR angle

B. Rotation

Which projection of the skull produces an image of the frontal bone with little or no distortion?

PA

Which skull positioning line is placed parallel to the plane of the IR for the SMV projection?

A. OML

B. IOML

C. AML

D. GML

B. IOML

Which one of the following projections best demonstrates the Sella Turcica in profile?

A. AP axial

B. SMV

C. 15 degree PA axial

D. Lateral

D. Lateral

Which of the following projections best demonstrates the Clivus in profile?

A. AP axial

B. 15 degree PA

C. Lateral

D. SMV

C. Lateral

Which of the following projections bets demonstrates the Foramen Rotundum?

A. SMV

B. 25 to 30 degree AP axial

C. 25 to 30 degree PA axial

D. Lateral

C. 25 to 30 degree PA axial

Which imaging modality is best to differentiate between an epidural and subdural hemorrhage?

A. CT

B. MRI

C. Nuclear Medicine

D. PET

A. CT

Where is the CR centered for a Lateral position for Facial Bones?

A. Outer canthus

B. Acanthion

C. Zygoma

D. Nasion

C. Zygoma

What CR angle must be used to project the Petrous Ridges below the orbital floor with the PA axial (Caldwell method) projection?

A. None

B. 30 degrees

C. 20 degrees

D. 45 degrees

B. 30 degrees

Which line is perpendicular to the IR for a Waters projection?

MML

What CR angle is required for the AP axial projection of the Mandible if the OML is placed perpendicular to the IR?

IOML?

OML = 35 degrees

IOML = 42 degrees

Which projection/method of the TMJ requires that the skull be kept in a true Lateral position?

A. Modified Law

B. Schuller

C. Axiolateral oblique

D. Modified Towne

B. Schuller

Match the following.

1.___ Lateral

2.___ Parietoacanthial

3.___ PA Caldwell

4.___ PA Transoral

5.___ SMV for sinuses

A. Sphenoid sinus is oral cavity

B. Inferosuperior view of sphenoid and ethmoid

C. All four paranasal sinuses demonstrated

D. Best view of maxillary sinuses

E. Best view of frontal and ethmoid sinuses

1. = C

2. = D

3. = E

4. = A

5. = B