Progress test 1

Question 1

common scan delay time used for arterial phase

Answer 1

20-30 secs

Question 2

during the venous phase, scans are carried out when there is an attenuation difference of ___________ between the aorta and IVC

Answer 2

10-30

Question 3

which type of brain hemorrhage is most often caused by a berry aneurysm

Answer 3

subarachnoid hemorrhage

Question 4

which type of brain hemorrhage results from shearing forces to the intraparenchymal arteries

Answer 4

intracerebral hemorrhage

Question 5

which type of medication is most commonly administered when a patient is having a ischemic stroke

Answer 5

tissue plasminogen activator (t-PA)

Question 6

which type of brain pathology is accompanied by shunting of blood between arteries and veins

Answer 6

arteriovenous malformation

Question 7

which neurodegenerative disorder has symptoms of involuntary tremors, stiffness, bradykinesia, and stooped posture

Answer 7

parkinsons disease

Question 8

which type of fracture appears as fracture lines through the zygomatic arch, orbital floor, and separation of the frontozygomatic suture

Answer 8

tripod fracture

Question 9

which type of le fort fracture involves the alveolar, zygomatic, and frontal portion of the maxilla, along with the nasal bones

Answer 9

type 2

Question 10

how is the patient positioned for a brain CT

Answer 10

supine in a dedicated head holder or contoured sponge on the CT table

Question 11

when evaluating for a neoplasm or infection, what is the scan delay commonly used for CT scans of the brain

Answer 11

3-5 minutes

Question 12

when assessing for a vascular abnormality of the head and neck, at what rate should the injection of contrast media be?

Answer 12

4-5 ml/sec

Question 13

which type of IV administration can be used to evaluate the soft tissue and vascular structures of the neck

Answer 13

spilt bolus

Question 14

T or F
contrast is required when evaluating the bony anatomy of the facial bones

Answer 14

false

Question 15

what scan delay is commonly used for the arterial phase

Answer 15

20-30 seconds

Question 16

what is the scan delay commonly used for the portal venous phase

Answer 16

60-80 seconds

Question 17

what scan delay is commonly used for the early delayed

Answer 17

3-5 minutes

Question 18

what scan delay is commonly used for the later delayed phase

Answer 18

5-15 minutes

Question 19

arterial scans are carried out when there is an attenuation difference of ________ HU between the aorta and the IVC

Answer 19

30

Question 20

which scan delay method involves a small amount of IV contrast being injected and the technologist can determine the time required for that specific area to reach peak opacification

Answer 20

bolus timing

Question 21

which scan delay technique involves a full dose of contrast being administered and once the area of interest is fully opacified, the full diagnostic scan is initiated

Answer 21

bolus tracking

Question 22

which gauge of IV is commonly used with an injection rate of 5 ml/s

Answer 22

18G

Question 23

what are the two types of strokes

Answer 23

ischemic and hemorrhagic stroke

Question 24

which type of image acquisition is used for CT scans of the facial bones and sinuses

Answer 24

helical

Question 25

which type of image acquisition is used for CT scans of the neck

Answer 25

helical

Question 26

which type of imaging acquisition is used for CT scans of the brain

Answer 26

axial (step and shoot)

Question 27

WW and WL for brain tissue

Answer 27

WW:100 WL:30

Question 28

if a true coronal plane is required by the physician for CT facial bones, how should the patient be positioned for their CT scan

Answer 28

position the patient in a prone position with their neck extended as much as possible

Question 29

to demonstrate the bony anatomy, what is the WW and WL for CT facial bones

Answer 29

WW:4000 WL:400

Question 30

what is the WW and WL thta is used for CT sinuses

Answer 30

WW:4000 WL:1000

Question 31

to demonstrate the bony anatomy, what is the WL and WW for neck CT

Answer 31

WW:2000 WL:500

Question 32

to demonstrate soft tissue anatomy, what is the WW and WL for a neck CT

Answer 32

WW:450 WL:75

Question 33

what type of injury occurs due to injury in the middle meningeal artery and is associated with a skull fracture

Answer 33

epidural hemorrhage

Question 34

symptoms of subdural hemorrhage

Answer 34

headache, confusion, problems with balance

Question 35

what increase the risk of a subdural hemorrhage

Answer 35

increasing age, anticoagulants

Question 36

symptoms of a subarachnoid hemorrhage

Answer 36

sudden onset of thunderclap headache, nausea, vomiting, increased sensitivity to light

Question 37

what commonly causes intracerebral hemorrhages

Answer 37

trauma or hemorrhagic strokes

Question 38

symptoms of a stroke

Answer 38

slurred speech, facial hemiparesis, weakness on the affect side of the body (arms), loss of balance

Question 39

what is the most common cause of an embolus that leads to a ischemic stroke

Answer 39

artial fibrillation

Question 40

what type of stroke is associated with hypertension

Answer 40

hemorrhagic stroke

Question 41

what is the best scanning protocol that bests demonstrates an AVM

Answer 41

CTA COW

Question 42

what type of scan protocol is done for a intracranial malignancies

Answer 42

non contrast and contrast enhanced brain

Question 43

what tumor presents with symptoms of seizures, hemiparesis, persistent headache, speech, and memory impairment

Answer 43

glioblastoma multiforme

Question 44

what tumor does not invade the brain, but compresses it

Answer 44

meningiomas

Question 45

how is the gantry angled for CT scans of the brain

Answer 45

angled to the SOML

Question 46

how should the shoulders be for a neck CT exam

Answer 46

as low as possible

Question 47

how much IV contrast is used for CT scans of the neck when evaluating soft tissue and vascular structures

Answer 47

60-100 mls IV

Question 48

how much contrast is given for CT exams of the head when neoplasms are a clinical indication

Answer 48

100 mls

Question 49

how much contrast is given for CT scans of the head for CTAs

Answer 49

60-100 mls

Question 50

DFOV for facial bones

Answer 50

18 cm

Question 51

DFOV for sinuses

Answer 51

16-18 cm

Question 52

DFOV for brain/head

Answer 52

23 cm

Question 53

DFOV for CT neck exams

Answer 53

20-24 cm

Question 54

start and end for CT neck

Answer 54

mid orbit to clavicular heads (thoracic inlet)

Question 55

start and end locations for CT head/brain

Answer 55

base of skull to vertex

Question 56

start and end locations for CT sinuses

Answer 56

just superior to frontal sinus to just inferior to maxillary sinuses

Question 57

start and end locations for CT facial bones

Answer 57

just superior to frontal bone to just inferior to the mandible

Question 58

a non contrast CT scan is used to evaluate...

Answer 58

blood calcium bone pulmonary parenchyma

Question 59

an arterial CT scan is used to evaluate...

Answer 59

pulmonary emboli aneurysms or dissections vascular malformations bleeding and ischemia bowel wall hypervascular tumors or hypervascular metastases

Question 60

a portal venous CT is commonly carried out to evaluate:

Answer 60

nonspecific abdominal pain hernia infection masses (few exceptions such as hypervascular, renal, and some hepatic tumors most follow up exams

Question 61

delayed kidney CT scan is used to evaluate:

Answer 61

kidneys, collecting system (ureters and bladder) liver and adrenal tumors brain tumors

Question 62

examples of negative contrast

Answer 62

air carbon dioxide

Question 63

examples of positive contrast

Answer 63

iodinated solutions low density mixtures of barium

Question 64

what contrast is commonly used within the hollow structures of the digestive tract

Answer 64

negative and neutral contrast