radiation

Question 1

what is the defination of radiation

Answer 1

the sceince or study of radiation in medcine

Question 2

whats is the definition of a radiograph

Answer 2

a picture or film produced by the passage of x-ray through an object or the body

Question 3

what is the defintion of radiation

Answer 3

a form of energy carried by waves or stream of particles

Question 4

whay are dental readiograpghs important

Answer 4

many dental diseases are tipically discovered only through the use of a dental radiograpgh

Question 5

who discovered x-rays

Answer 5

Wilhelm Roentgen

Question 6

who exposed the first dental radiogragh on a live patient

Answer 6

c. Edmund Kells

Question 7

what is the smallest unit of matter

Answer 7

atom

Question 8

what subatomic particles are contained in the nuclues

Answer 8

photons & nuetrons

Question 9

what is the binding force of an elctron determined by

Answer 9

how far away from the nuclues the electron is located. the forced is weaker for the electrons located in the outer shells

Question 10

define ionization in simple terms

Answer 10

an atom that gains an electron will have a negative charge. if it loses an electron the atom will have a postive charge

Question 11

what is radioactivtiy

Answer 11

the process by which certain unstable atoms or elements undergo spontanous disintergration or decay in effort to attain a more balanced nucluer state

Question 12

define particulate radition

Answer 12

radiation that travels in tiny particle3s of matter

Question 13

what is includ3ed in electromagnetic radiations

Answer 13

x-rays & visible light

Question 14

what are photons

Answer 14

bundles of energy with no mass that travel in space in a striaght line

Question 15

what does the control panel on a x-raymachine contain

Answer 15

on/off switch, indicator light, exposure buttojn, kVp+MA controls

Question 16

whish compotent of the tube heat absorbs heat

Answer 16

insulating oil

Question 17

what part of the tube haed positions the beam

Answer 17

PID

Question 18

where are the electrons generated i the xray tube

Answer 18

tungsten filment in the cathode

Question 19

what is the purpose of the anode

Answer 19

convertelectrons into xray photons

Question 20

what does amperage refer to

Answer 20

the measurment of the number of electrons moving through conductor

Question 21

what is the function of the lead collimator

Answer 21

restricts the size of the xray beam

Question 22

which form of xray beam in most harmful to the patient

Answer 22

scatter radiation

Question 23

what does voltage refer to

Answer 23

the potential difference between teo electrical charges

Question 24

what happens when voltage is increased

Answer 24

electrons move from the cathode to anode with mor e spped

Question 25

what is denisty

Answer 25

overall darkness and nlackness of a file

Question 26

what affects the density of the fild

Answer 26

time, kvp, MA

Question 27

how is exposeure time measured

Answer 27

impulses

Question 28

MA controls

Answer 28

quanity of xrays

Question 29

kvp controls

Answer 29

quality of the xrays

Question 30

name a short term effect of radiation

Answer 30

hair loss

Question 31

which of the following is most radiosensitive

Answer 31

Blood

Question 32

what is the traditiona unit of measure in radiograpghy

Answer 32

Rad= radiation absorbed dose

Question 33

whis if the following percentages can radiation be reduced by if using a faster film speed –10%, 20%, OR 60%

Answer 33

60%

Question 34

when is the thryroid collar not recommended

Answer 34

when taking extraoral xrays

Question 35

what is the current MPD (maximum permissible dose) for occupational exposure

Answer 35

5rem

Question 36

at what angle and how many feet should the operator stand away from the primary beam

Answer 36

90-135 degrees or 6-8ft

Question 37

the collimator should be

Answer 37

2.75