chapter 11: incorporation of ct and contrast media into pet practices

Question 1

an order is received for pet and ct exams on the same day. in order for the caregiver to have the appropriate documentation to perform 2 scans independently on the same day that will not be reported together, they must add what to the CPT series?

modifier 29
modifier 39
modifier 49
modifier 59
modifier 69

Answer 1

modifier 59

Question 2

patients with…are prone to acute renal failure d/t the increased renal burdens of hypercalcemia, proteinuria, and dehydration when getting ct contrast

type I diabetes
type II diabetes
thyroid disease
multiple myeloma
lymphoma

Answer 2

multiple myeloma

Question 3

T/F: images are comprised of numbers called the window width, and the window level is the center of this range

Answer 3

true

Question 4

what is the parent molecule for contrast agents?

iodine
iodide
benzene
dimer
monomer

Answer 4

benzene

Question 5

how many atoms of iodine are associated with each ring of the parent molecule for ct contrast?

2
3
4
5
6

Answer 5

3

Question 6

low osmolar compounds are how many times more osmolar than plasma?

1-3 times
2-3 times
2-4 times
3-5 times

Answer 6

2-3 times

Question 7

high osmolality contrast media are how many times more osmolar than plasma?

3-5 times
4-6 times
5-8 times
5-10 times

Answer 7

5-8 times

Question 8

a patient is getting a ct scan with contrast, but just had dense barium sulfate for a radiographic procedure. how long should they wait before performing the ct scan?

1 day
1-5 days
1 week
2 weeks

Answer 8

1-5 days

Question 9

how recent should lab tests be performed prior to performing a ct scan on patients undergoing radiation and/or chemo?

24 hours
48 hours
72 hours
1 week

Answer 9

48 hours

Question 10

all are considered mild reactions to contrast media except

nausea/vomiting
bronchospasm
dizziness
rashes
urticaria

Answer 10

bronchospasm

Question 11

the bolus phase is defined by a difference of…HU between the inferior vena cava and the abdominal aorta

20
30
40
50

Answer 11

30 HU

Question 12

the nonequilibrium phase is defined by a difference of…HU between the inferior vena cava and abdominal aorta

10-30
10-20
20-30
30-40

Answer 12

10-30 HU

Question 13

the equilibrium phase is defined by a difference of…HU between the inferior vena cava and abdominal aorta

less than 5
less than 10
10
less than 20

Answer 13

less than 10 HU

Question 14

what is the correct order of iv contrast media phases?

equilibrium, bolus, non equilibrium

bolus, equilibrium, non equilibrium

bolus, non equilibrium, equilibrium

equilibrium, non equilibrium, bolus

Answer 14

bolus, non equilibrium, equilibrium

Question 15

which vessel supplies 80% of blood to the liver?

hepatic artery
hepatic vein
portal vein
portal artery
both hepatic artery and portal vein

Answer 15

portal vein