Deck 15: Computed Tomography of the Head, Cerebral Vessels, Neck, and Spine

Question 1

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

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

Answer 1

strokes.

Question 2

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.

Answer 2

computed tomographic scan of the head without contrast.

Question 3

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

Answer 3

Cerebral infarction

Question 4

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 5

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

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

Question 6

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 7

Orbital computed tomographic images should always be available in which plane because of the pyramidal shape of the bony orbit?

A) Coronal
B) Sagittal
C) Oblique
D) Curved

Question 8

Computed tomography (CT) provides rapid information about each of the following traumatic injuries except:

A) contusions.
B) fractures.
C) hematomas.
D) metastasis.

Question 9

In adults, what is the preferred scanning line when imaging the head?

A) Canthomeatal line
B) Orbitomeatal line
C) Interpupillary line
D) Extrenomeatal line

Question 10

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 11

The matrix size on most of the current equipment is:

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

Question 12

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 not eat 6 hours prior to the exam.
D) patient should be made comfortable.

Question 13

Image acquisition is primarily obtained in the ___________ plane.

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

Question 14

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

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

Question 15

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 16

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 17

Studies requiring reformatted images are acquired with ________ slices.

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

Question 18

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 19

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 20

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

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

Question 21

The zygoma is labeled:

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

Question 22

The structure labeled 5 is the:

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

Question 23

The nasal septum is labeled:

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

Question 24

The structure labeled as 1 is the:

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

Question 25

The falx cerebri is labeled:

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

Question 26

The mastoid air cells are labeled:

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

Question 27

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

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

Question 28

The thalamus is labeled:

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

Question 29

The internal jugular vein is labeled:

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

Question 30

The sphenoid sinus is labeled:

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

Question 31

The structure labeled 15 is the:

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

Question 32

The structure labeled 3 is the:

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

Question 33

The structure labeled as 7 is the:

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

Question 34

The lateral orbital wall is labeled:

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

Question 35

The ethmoid sinuses are labeled:

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

Question 36

The structure labeled 7 is the:

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

Question 37

The structure labeled 3 is the:

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

Question 38

The structure labeled as 8 is the:

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

Question 39

The parotid gland is labeled:

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

Question 40

The structure labeled 6 is the:

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

Question 41

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

Question 42

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

Question 43

The intervertebral disk is labeled:

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

Question 44

The thyroid cartilage is labeled:

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

Question 45

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 46

The structure labeled as 4 is the:

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

Question 47

The structure labeled as 5 is the:

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

Question 48

The common carotid artery is labeled:

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

Question 49

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

Question 50

Sinus disease is not well demonstrated by CT.

Question 51

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 52

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

Question 53

Contrast-induced nephropathy indicates a deteriorated liver function as a result of iodine-based contrast.

Question 54

Sagittal sections are helpful in evaluating midline structures.

Question 55

A CT venogram (CTV) visualizes the jugular veins and dural sinuses for sites of possible thrombosis.