ch. 3 safety

Question 1

what type of radiation is hazardous

Answer 1

ionizing

Question 2

what happens to the fetus if exposed to radiation from 0-9 days

Answer 2

kills fetus

Question 3

what happens to the fetus if exposed to radiation from 10 days-6 weeks

Answer 3

deformities or retardation

Question 4

what are the 2 types of biologic damage due to overexposure

Answer 4

somatic and genetic

Question 5

what is somatic damage

Answer 5

damage done to body within lifetime

Question 6

what are the CS of somatic damage

Answer 6

cancer, cataracts, aplastic anemia, sterility

Question 7

what is genetic damage

Answer 7

damage or injury to genes of reproductive cells

Question 8

what are the CS of radiation poisening

Answer 8

GI flu-like symptoms

Question 9

how can you get radiation dermititis

Answer 9

lack of gloves with hands exposed to the beam

Question 10

single exposure to ___rad or __Gy is lethal in humans

Answer 10

300;3

Question 11

what does MPD stand for

Answer 11

maximum permissible dose

Question 12

amount of radiation a person can recieve in a given period

Answer 12

maximum permissible dose

Question 13

who ensures procedures and equipment is adequate

Answer 13

NCRP

Question 14

what doe NCRP stand for

Answer 14

national committee on radiation protection and measurements

Question 15

what does ALARA stand for

Answer 15

as low as reasonably achievable

Question 16

what does rad stand for

Answer 16

radiation absorbed dose

Question 17

what are the 2 amounts of radiation received

Answer 17

absorbed dose and dose equivalent

Question 18

the quantity of energy given off to matter

Answer 18

absorbed dose

Question 19

unit of measurment of absorbed dose

Answer 19

Gy; gray

Question 20

quantity of radiation per unit of mass taking into consideration the biologic effect on specific tissue types

Answer 20

dose equivelent

Question 21

what is the unit of measurement of dose equivelent

Answer 21

Sv; severt

Question 22

what was the old name for Sv

Answer 22

rem

Question 23

how many rem =1Sv

Answer 23

100

Question 24

MPD per year for non-occupaional individuals

Answer 24

0.005Sv/year

Question 25

MPD per year for occupational individuals

Answer 25

0.05 Sv/year

Question 26

how can you decrease patient exposure

Answer 26

avoid retakes, collimate beam, gonad sheild

Question 27

ability to monitor amount of radiation received

Answer 27

dosimetry

Question 28

personal monitoring device

Answer 28

dosimeter

Question 29

what is the most common PMD

Answer 29

film badge

Question 30

how often is a film badge handed in most commonly

Answer 30

monthly

Question 31

what has a charged ion chamber and can be read instantly

Answer 31

pocket ionization chamber

Question 32

what are the 2 crystals contained in a thermoluminescent dosimeter

Answer 32

calcium fluoride and lithium fluoride

Question 33

what PMD does VTI use

Answer 33

instadose

Question 34

where can personnel exposure occur

Answer 34

primary beam, secondary radiation, leakage from tube

Question 35

where can scatter come from

Answer 35

patient, table, high kVp

Question 36

how often should you visually inspect PPE

Answer 36

every use

Question 37

how often should PPE be radiographed

Answer 37

annually

Question 38

how much lead is in PPE

Answer 38

0.5 mm

Question 39

what gives a "live view" of internal anatomy

Answer 39

fluoroscopy

Question 40

what should never be done during fluoroscopy

Answer 40

palpate area of interest or replace traditional radiogaphy

Question 41

what cells are most sensitive to adiation

Answer 41

growth, gonad, neoplastic, metabalically active

Question 42

what cells react slightly to radiation

Answer 42

bone, lymph, dermis, hemapoitic

Question 43

what are the 6 safe operating procedures

Answer 43

technique chart, positioning aids, PPE, docimiter, emergancy plan, quality control

Question 44

what 3 things are required when taking radiographs

Answer 44

decrease exposure time, increase distance from source, increase PPE