(*-*) RADIATION MEASUREMENT INSTRUMENTS

Question 1

pocket dosimeters, cutie pies, and thimble chambers are all examples of what type of radiation measurement instrument?

Answer 1

ionization chambers

Question 2

______ is a personnel dosimeter

Answer 2

pocket dosimeter

Question 3

____ is a portable io chamber

Answer 3

cutie pie

Question 4

_____ is a cavity based ionization chamber and measures DIRECT EXPOSURE and calibrates ion chambers!

Answer 4

thimble chambers

Question 5

farmer chambers, mini-chambers, and survey meters are all types of what?

Answer 5

thimble chambers

Question 6

_____ is a portable survey meter

Answer 6

GM detector (Geiger Muller Detector)

Question 7

to find misplaced sources… what do we use?

Answer 7

GM detector (Geiger Muller Detector)

Question 8

T/F: a GM detector (Geiger Muller Detector) is NOT a dose measuring device?

Answer 8

true… a GM detector is not used to measure

Question 9

what is used in proton therapy and LINACs that produce 10 MV or more?

Answer 9

neutron detectors

Question 10

this is a what?

Answer 10

neutron detector

Question 11

this is a what?

Answer 11

GM detector/counter

Question 12

this is a what?

Answer 12

cutie pie

Question 13

this is a what?

Answer 13

ion chamber

Question 14

a TLD or OSL is made of LiF (Lithium)

Answer 14

TLD

Question 15

a TLD or OSL is made of Aluminum Oxide

Answer 15

OSL

Question 16

which personnel monitoring device uses heat?

Answer 16

TLD

Question 17

which personnel monitoring device uses light?

Answer 17

OSL

Question 18

which personnel monitoring device is more accurate than the other?

Answer 18

TLD

Question 19

_____ are solid state detectors and produce REAL TIME readings

Answer 19

diodes

Question 20

_____ are used for our daily output checks and are attached to an electrometer

Answer 20

diodes

Question 21

____ are used for patient dosimetry and beam verification; can be put on patient’s skin w/i trt field and can monitor

Answer 21

diodes

Question 22

____ has an atomic number very similar to human tissue

Answer 22

LiF

Question 23

_____ is used for in vivo dose verification, skin dose, phantom measurements, and of course personnel monitoring and ring badges

Answer 23

TLDs

Question 24

diodes can measure beam profile but are not used for calibration . _____ is used for calibration

Answer 24

thimble//farmer

Question 25

the degree of ____ on film relates to the dose received by the film

Answer 25

blackness

Question 26

measure of light attenuation by film; the degree of blackness on a film is referred to as what?

Answer 26

OD (optical density)

Question 27

OD (optical density) is measured by a device called what?

Answer 27

densometer

Question 28

film contains what?

Answer 28

silver bromide covered in a plastic base… and radiation causes a change in the silver bromide grains

Question 29

____ was the original personnel monitoring device

Answer 29

film

Question 30

film must be developed to turn a ____ image into a ____ image

Answer 30

latent; manifest

Question 31

film has a ___high/low___ spatial resolution

Answer 31

high