DXI

Question 1

What are the most sensitive organs to radiation?

Answer 1

Reproductive organs, thyroid gland, and LENS OF EYE

Question 2

What are required PPE for radiation safety

Answer 2

Lead gown
Lead gloves
Thyroid shield

Question 3

What is the minimum thickness required of lead equipmemt

Answer 3

0.5mm

Question 4

What is the maximum REM allowance per year?

Answer 4

5 REM (50 mSv) whole body
50 REM (500 mSv) skin and extrem.
15 REM (150 mSv) eyes or lens

Question 5

What is the maximum occupational dose in any month for a pregnant woman?

Answer 5

0.05mSv or 5REM

Question 6

ALARA

Answer 6

As low as reasonably achievable

Question 7

3 tenants of radiation safety

Answer 7

Time
Distance
Shielding

Question 8

Inverse square law

Answer 8

1 ft away = 4 times more safe

Question 9

What does the aluminum filter do

Answer 9

Filters unproductive xrays

Question 10

kVp

Answer 10

Variable length of ray penetrates variable thickness of organs
Creates contrast between organs
“Scale of grey”

Question 11

mA

Answer 11

One length of ray, variable amount of them
Density of bone

Question 12

Film focal distance

Answer 12

Fixed 36-40 inches