Radiation Quatities

Question 1

Reddening of the skin caused by overexposure to radiation

Answer 1

Radiodermatitis

Question 2

Unit for measuring radiation exposure (1900-1930)

Answer 2

Skin Erythema Dose

Question 3

Quantity of radiation that causes diffuse redness over an area of skin

Answer 3

Skin Erythema Dose

Question 4

Amount of absorbed radiation corresponds to a modern dose of several dose

Answer 4

Skin erythema dose

Question 5

Dose of radiation below which an individual has a negligible chance of sustaining specific biological damage

Answer 5

Threshold dose

Question 6

A radiation dose to which occupationally exposed persons could be continuously subjected without any harmful acute effects

Answer 6

Tolerance Dose (1930)

Question 7

Tolerance dose required per day

Answer 7

0.2 roentgen/day

Question 8

In 1936, Tolerance dose required per day

Answer 8

0.1 roentgen/day

Question 9

Replaced the tolerance dose for radiation purposes

Answer 9

Maximum permissible dose

Question 10

Indicate the largest dose of ionising radiation that occupationally exposed person was permitted that was not anticipated to result in major adverse effects as a consequence of radiation exposure

Answer 10

Maximum permissible dose

Question 11

Unit for Maximum permissible dose

Answer 11

rem

Question 12

Express how much Ionization the beam causes in the air through which it travels

Answer 12

Exposure (X)

Question 13

Unit of exposure

Answer 13

roentgen (R)

Question 14

The SI unit of radiation exposure

Answer 14

Coulomb per kilogram (C kg-1)

Question 15

Produces 2.08 x 10^9 ion per cm^3 of air at standard temperature and pressure (STP)

Answer 15

1 roentgen

Question 16

1 cm^3 of air at STP has a mass of

Answer 16

0.001293g

Question 17

STP:

Answer 17

1 atmosphere of pressure
0 C (273.15 Kelvin)

Question 18

Amount of exposure that will produce 2.58 x 10^-4 C per kg of air

Answer 18

Roentgen

Question 19

Unit of electrical charge

Answer 19

coulomb

Question 20

One coulomb of charge is produced by

Answer 20

6.24x10^18 ionizations

Question 21

1 R =

Answer 21

2.58 x 10-4 C/kg

Question 22

1 C/kg =

Answer 22

3876 R

Question 23

Amount of energy per unit mass absorbed by the irradiated object

Answer 23

Absorbed dose (D)

Question 24

As ionizing passes through an object, some of that energy of that radiation is transferred to that medium

Answer 24

Absorbed dose (D)

Question 25

Responsible for any biological damage resulting from the tissues being exposed by radiation

Answer 25

Absorbed energy

Question 26

Quantity of radiation energy absorbed per unit mass of tissue

Answer 26

Absorbed dose

Question 27

Conventional yin for Absorbed dose

Answer 27

rad

Question 28

Rad is equivalent to

Answer 28

100 ergs of absorbed energy per g of tissue

Question 29

The SI unit for Absorbed dose

Answer 29

Gray (Gy)

Question 30

Gray is equivalent to the absorption of

Answer 30

1J of radiation energy per kg of tissue

Question 31

Gray is named after the scientist

Answer 31

Louis Harold Gray

Question 32

Radiation quantity that use used to express the radiation concentration delivered to a point

Answer 32

Air Kerma

Question 33

KERMA

Answer 33

Kinetic Energy Released per unit mass (of air)

Question 34

Unit of Kerma

Answer 34

J/kg

Question 35

Absorbed dose in air

Answer 35

Air kerma

Question 36

The variation in biological harm that is produced in different types of radiation

Answer 36

Equivalent Dose (EqD)

Question 37

Used to express the biological impact of radiation on persons receiving occupational or environmental exprosures

Answer 37

Dose Equivalent

Question 38

Personnel exposure in a clinical facility is determined by

Answer 38

Dose equivalent

Question 39

Conventional unit for dose equivalent

Answer 39

rem

Question 40

SI unit for dose equivalent

Answer 40

Sievert

Question 41

Factor by which the absorbed dose must be multiplied to obtain a quantity that expressed on a common scale for all ionizing radiation

Answer 41

Radiation Weighing Factor

Question 42

Radiation quantity for expressing relative risk to humans both patients and other personnel

Answer 42

Effective dose

Question 43

ICRP multiplier used to determine the effective dose from the equivalent dose in one or more organs or tissues

Answer 43

Tissue weighing factor

Question 44

Represent radiation harm for which there is no threshold

Answer 44

Probabilistic Effect

Question 45

Dose limits for occupational exposure

Answer 45

Annual - 50mSv Cumulative - 10mSv Eyes - 150mSv Skin hands feet - 500mSv

Question 46

Dose limit for public, the annual dose limit is

Answer 46

One-tenth that of radiation workers

Question 47

Use to describe a beam of x-radiation fall into two general categories

Answer 47

Radiation Quantities