Deck 17: Computed Tomography of the Head, Cerebral Vessels, Neck, and Spine

Question 1

Orbital computed tomographic images should always be available in which planes because of the pyramidal shape of the bony orbit? I. coronal
II) sagittal
III) transverse

A)I and II
B)II and III
C)I and III
D)I, II, and III

Answer 1

I and III

Question 2

Indications for a computed tomographic scan of the neck include all of the following except:

A)carotid stenosis
B)goiter
C)mass
D)polyps

Answer 2

polyps

Question 3

As with plain radiographs, transverse images and coronal reformatted images are viewed as if facing the individual.

Answer 3

True

Question 4

An important use of computed tomographic angiography of the head is in the evaluation of:

A)acute cerebral infarction
B)fractures
C)tumor visualization
D)venous visualization

Question 5

Which images are particularly useful for assessing bone when the plane of the bone runs parallel to the axial slice?

A)axial
B)coronal
C)oblique
D)sagittal

Question 6

Sagittal images of the temporal bone can highlight the relationships of the ossicles and the structures along the medial wall of the middle ear.

Question 7

Which of the following is the most common condition evaluated by repeated computed tomographic head scanning?

A)acute subdural hematoma
B)chronic subdural hematoma
C)metastatic disease
D)transient ischemic attack

Question 8

What pathologic condition describes the result of a loss of adequate blood supply to a portion of the brain?

A)cerebral infarction
B)hemorrhage
C)metastatic disease
D)tumor

Question 9

Contrast enhancement is well visualized on bone algorithm or bone windows.

Question 10

Computed tomography provides rapid information about traumatic injuries including: I. contusions
II) fractures
III) hematomas

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 11

A standard dose of contrast is administered for each type of examination on the basis of the patient's weight, up to a maximum.

Question 12

To ensure that no life-threatening condition exists, the first examination performed should be:

A)computed tomographic angiography of the thoracic aorta
B)computed tomographic angiography of the neck vessels
C)computed tomographic scan of the chest
D)computed tomographic scan of the head without contrast

Question 13

In children, a steeply angled plane is used to scan the brain to avoid radiating the ocular lens.

Question 14

Major indications for computed tomography imaging of the head include: I. trauma
II) stroke
III) metastatic disease

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 15

Sagittal sections are helpful in evaluating midline structures.

Question 16

Indications for a computed tomographic scan of the spine include all of the following except:

A)disk herniations
B)osteomyelitis
C)strokes
D)spondylolisthesis

Question 17

Image acquisition is primarily obtained in the ___________ plane.

A)axial
B)coronal
C)oblique
D)sagittal

Question 18

The subspecialty of radiology that deals with the central nervous system and conditions affecting the head and neck is:

A)cranial radiology
B)gastoradiology
C)neuroradiology
D)vascular radiology

Question 19

Computed tomography has largely replaced plain films of the cervical spine in cases of trauma.

Question 20

Sinus disease is not well demonstrated by computed tomography.

Question 21

The __________ plane is still the most used plane for image interpretation of the skull and its contents.

A)coronal
B)oblique
C)sagittal
D)transverse

Question 22

The nasal septum is labeled:

A)1
B)2
C)3
D)4

Question 23

All of the following are algorithms used for the brain, neck, and spine except:

A)bone
B)detail
C)lung
D)standard

Question 24

The matrix size on most of the current equipment is:

A)256*256
B)512* 512
C)1024 *1024
D)2048* 2048

Question 25

In adults, the preferred scanning line is the: I. canthomeatal line
II) orbitomeatal line
III) Reid's baseline

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 26

Which of the following is a form of computed tomographic angiography used in suspected acute brain infarction to determine the amount of brain tissue at risk for permanent damage?

A)computed tomographic effusion
B)computed tomographic venogram
C)computed tomographic perfusion
D)computed tomographic transmission

Question 27

The structure labeled 5 is the:

A)lateral orbital wall
B)mandibular condyle
C)temporal bone
D)zygomatic arch

Question 28

The zygoma is labeled:

A)6
B)7
C)8
D)9

Question 29

The structure labeled 7 is the:

A)cribriform plate
B)lateral orbital wall
C)roof of the orbit
D)zygoma

Question 30

The anterior (frontal) horn of the lateral ventricle is labeled as:

A)4
B)8
C)15
D)16

Question 31

Coronal images are valuable for scans of the following except:

A)top of the cranial vault
B)roof of the orbit
C)skull base
D)ventricles

Question 32

The structure labeled 6 is the:

A)ascending carotid canal
B)lateral orbital wall
C)nasal septum
D)mandibular condyle

Question 33

The mastoid air cells are labeled:

A)3
B)11
C)12
D)15

Question 34

The ethmoid sinuses are labeled:

A)2
B)3
C)4
D)5

Question 35

The lateral orbital wall is labeled:

A)6
B)7
C)8
D)9

Question 36

Preparation of the patient for a computed tomographic scan of the head or spine should include all of the following except:

A)metallic objects should be removed
B)explanation of contrast media (if indicated)
C)patient should empty the bladder
D)patient should be made comfortable

Question 37

Studies requiring reformatted images are acquired with ________ slices.

A)coronal
B)sagittal
C)thick
D)thin

Question 38

Spine imaging is acquired: I. by tilting the gantry
II) perpendicular to the tabletop
III) with the patient in a lateral position

A)I and II
B)II and III
C)I and III
D)I, II, and III

Question 39

Because enhancement persists for hours, at least ___________ hours should elapse after a contrasted examination before an unenhanced scan is obtained.

A)3-5
B)4-6
C)5-7
D)6-8

Question 40

The structure labeled 3 is the:

A)cribriform plate
B)inferior turbinate
C)maxillary sinus
D)middle turbinate

Question 41

The internal jugular vein is labeled:

A)6
B)7
C)8
D)9

Question 42

The structure labeled as 5 is the:

A)internal carotid artery
B)internal jugular vein
C)sternocleidomastoid muscle
D)vertebral artery

Question 43

The thalamus is labeled:

A)9
B)10
C)12
D)14

Question 44

The structure labeled 15 is the:

A)calcified choroid plexus
B)fourth ventricle
C)pons
D)third ventricle

Question 45

The falx cerebri is labeled:

A)17
B)18
C)19
D)20

Question 46

The structure labeled as 4 is the:

A)carotid artery
B)esophagus
C)spinal cord
D)vertebral artery

Question 47

The parotid gland is labeled:

A)8
B)9
C)10
D)11

Question 48

The structure labeled 3 is the:

A)caudate nucleus
B)fourth ventricle
C)pons
D)third ventricle

Question 49

The structure labeled as 1 is the:

A)internal carotid artery
B)masseter muscle
C)odontoid process
D)spinal cord

Question 50

The sphenoid sinus is labeled:

A)1
B)2
C)3
D)5

Question 51

The intervertebral disk is labeled:

A)4
B)5
C)6
D)7

Question 52

The thyroid cartilage is labeled:

A)1
B)2
C)3
D)6

Question 53

The common carotid artery is labeled:

A)4
B)5
C)7
D)8

Question 54

The structure labeled as 7 is the:

A)cerebellar hemisphere
B)frontal lobe
C)middle cerebellar peduncle
D)temporal lobe

Question 55

The structure labeled as 8 is the:

A)internal carotid artery
B)internal jugular vein
C)odontoid
D)parotid gland