Topic 1: Contrast Media

Question 1

substances having a high or low atomic number than the sorrounding tissues to represent organs

Answer 1

contrast media

Question 2

appear black on the radiograph, has a low atomic number, commonly used agents are carbon dioxide and air

Answer 2

negative contrast agent

Question 3

appear white on the radiograph, has a high atomic number, used to increase organ density and improve radiographic visualization, commonly used agents are barium sulfate and iodinated preparations

Answer 3

positive contrast agent

Question 4

relatively non-toxic agent

Answer 4

barium sulfate

Question 5

present greater danger to patient

Answer 5

iodinated contrast

Question 6

most frequently used/chosen contrast medium

Answer 6

barium sulfate

Question 7

white crystalline powder that is mixed with water

Answer 7

barium sulfate

Question 8

used to demonstrate pathologic conditions of the visceral walls

Answer 8

high-contrast barium solution

Question 9

ability to detect small lesions

Answer 9

double contrast of barium and air

Question 10

two types of contrast agents:

Answer 10

1. iodine
2. barium

Question 11

resistance of fluid to movement depending on molecular size and concentration

Answer 11

viscosity

Question 12

types of ionic salt:

Answer 12

1. meglumine
2. sodium

Question 13

permit high iodine concentration without high velocity

Answer 13

sodium salts

Question 14

low amount of iodine per second

Answer 14

meglumine

Question 15

volume distribution of iodine

Answer 15

iodine content

Question 16

the ability of the medium to mix with other fluids

Answer 16

miscibility

Question 17

amount of time the contrast stay in the body

Answer 17

persistence

Question 18

measure of dissolved particles whether ions, molecules or compound in a solution

Answer 18

osmolality

Question 19

four primary method of drug administration:

Answer 19

1. enteral
2. parenteral
3. pulmunary route
4. topical

Question 20

method of drug administration done by feeding and digestion process

Answer 20

enteral drug administration

Question 21

method of drug administration done by injection or infusion by means of needle or catheter inserted in the body

Answer 21

prenteral drug administration

Question 22

route of administration where the alveoli and lungs are the absorption site

Answer 22

pulmunary route of administration

Question 23

application of drug directly to the surface of the skin

Answer 23

topical drug administration

Question 24

methods of injection:

Answer 24

1. intradermal
2. subcutaneous
   3.intramuscular
3. intravenous

Question 25

agents create a density difference by attenuating and absorbing the ionizing radiographic beam

Answer 25

positive contrast agents

Question 26

indications for contrast media are the pulmonary embolism and acute appendicitis

Answer 26

TRUE

Question 27

the side effects for contrast media are the flushing and mild skin rash

Answer 27

TRUE