Radiation Characteristics

Question 1

how penetrating the beam is

Answer 1

x ray beam quality

Question 2

number of rays produced

Answer 2

x ray beam quantity

Question 3

quality and quantity and distance

Answer 3

x ray beam intensity

Question 4

factors that can affect density amount of radiation

Answer 4

mA, kVp, Time

Question 5

tube current which changes the quantity of xrays in the beam (# of photons)

Answer 5

mA

Question 6

voltage potential which changes the quality of the beam (energy of photons)

Answer 6

kVp

Question 7

seconds or fraction of seconds radiation is on

Answer 7

time

Question 8

mA stands for

Answer 8

millamperage

Question 9

quality is dependent on

Answer 9

wavelength and energy

Question 10

quality is controlled by

Answer 10

kilovoltage kV

Question 11

beam is made up of different…

Answer 11

intensities (polychromatic)

Question 12

only two factors that influence quality of the beam

Answer 12

kvp and filtration

Question 13

how does kvp influence the quality of the beam

Answer 13

increases or decreases mean energy

Question 14

how does filtration influence quality of the beam

Answer 14

takes out low energy beam and makes beam higher energy

Question 15

aluminum filter that reduces intensity of the beam within tube head has

Answer 15

half value layer

Question 16

how does the half value layer /aluminum filter work

Answer 16

they remove the low energy longer wavelength photons before leaving the tube

Question 17

the higher the half value layer

Answer 17

the more penetrating the beam

Question 18

the specific thickness of aluminum placed in the path of the beam that reduces the intensity by 1/2

Answer 18

half value layer

Question 19

voltage measures

Answer 19

potential across the +/- ends of the tube

Question 20

voltage regulates

Answer 20

speed of electrons traveling between the cathode and anode

Question 21

average kilovoltage for dental

Answer 21

60-70 kvp

Question 22

density makes the image more

Answer 22

dark

Question 23

high kvp makes the image have

Answer 23

higher density

Question 24

how sharp the structures are differentiated

Answer 24

contrast

Question 25

level of contrast with high kvp

Answer 25

low (lots of grey)

Question 26

lvl of contrast with low kvp

Answer 26

high contrast (black and white)

Question 27

quality is to maintain..

Answer 27

the same density of the image

Question 28

kilovoltage and exposure time must

Answer 28

balance

Question 29

decrease kvp you need to

Answer 29

increase exposure time

Question 30

increase kvp you need to

Answer 30

decrease exposure time