Dosimetry And Basic Concepts

Question 1

4 units for measuring

Answer 1

Exposure— roentgen
Absorbed dose— rad
Dose equivalent—rem
Radioactivity— curie

Question 2

The amount of radioactive material administered tot he patient is expressed in

Answer 2

Cruie— very large unit

Question 3

Exposure units describe

Answer 3

The amount of ionizations when radiation traveling through the air
Roentgen and Coulomb/kg

Question 4

Roentgen applies to which type of rays

Answer 4

X-ray and gamma-rays

Question 5

Absorbed dose

Answer 5

The amount of radiation absorbed by an object or person
Unit is rad and gray

Question 6

1 Gy = ?

Answer 6

100 rads= 1 J/kg

Question 7

Dose equivalent

Answer 7

Combines the amount of radiation absorbed and the medical effects of that type of radiation
For beta and gamma — same as the absorbed dose
For alpha— dose equivalent is larger than the absorbed dose bc more damaging

Question 8

Quality factor

Answer 8

Factor expressing the relative effectiveness of a given particle based on its linear energy transfer