I

Question 1

the first American radiation fatality

Answer 1

Clarence Madison Dally (1865-1904)

Question 2

aims to reduce unnecessary radiation exposure with a goal to minimize the harmful effects of ionizing radiation.

Answer 2

Radiation protection

Question 3

is to prevent the occurrence of harmful deterministic effects and to reduce the probability of occurrence of stochastic effects

Answer 3

Radiation protection

Question 4

ALARA

Answer 4

As Low as Reasonably Achievable

Question 5

The _____ philosophy and its guidelines are what help to keep the risk of radiation exposure down. The ALARA guidelines are limits established to ensure that safety is maintained. We know that lower doses carry lower risk, and this concept helps to maintain cost effective safety.

Answer 5

ALARA

Question 6

Cardinal Rules of Radiation Protection

Answer 6

Shielding
Time
Distance

Question 7

The ____ states the the intensity of radiation decreases inversely with the square of the distance from the ionizing radiation source. This means that if the distance is doubled, the intensity decreases 4 fold. in other words, the intensity is one fourth the intensity if the distance is doubled.

Answer 7

inverse square law

Question 8

A _____ is placed between the x-ray tube and the individuals exposed, absorbing unnecessary radiation

Answer 8

lead protective shield

Question 9

TYPES OF SHEILDING

Answer 9

•FLAT /CONTACT
•SHAPED
•SHAD0W

Question 10

Reduces patient exposures

Answer 10

Filtration

Question 11

Removes low energy photons

Answer 11

Filtration

Question 12

Personnel Monitoring Devices

Answer 12

•Film Badges
• TLD / OSL
•Pocket Dosimeter •Ring Badge

Question 13

— A visible and audible signal that the tube is energized.

Answer 13

Focal Spot

Question 14

Units that measure the intensity of radiation are called ____

Answer 14

dosimeters

Question 15

A type of dosimeter that can measure a wide range of radiation intensities from 1 mR/hr to several thousand r/hr.

Answer 15

Gas-FilIed Detectors

Question 16

When was TLD (thermoluminescence dosimeter) discovered

Answer 16

1960

Question 17

When was OSL ( Optically Stimulated Luminescence) discovered?

Answer 17

1990’s by Landauer

Question 18

OSL is _____ to TLD and Film Badges

Answer 18

superior

Question 19

are the basis of nuclear medicine gamma cameras used for bone scans.

Answer 19

Scintillation detectors

Question 20

Radiation dose is measured in units
of

Answer 20

RADS (GyT)

Question 21

• Radiation exposure is measured in

Answer 21

Roentgens (GyA).

Question 22

When the radiation exposure is to a chiropractor, radiologic technologist or radiologist, the proper unit is

Answer 22

rem (Sv)

Question 23

• The recommended dose for radiology radiation workers is

Answer 23

50 mSv/year (5000 mrem/year)

Question 24

is the primary source of the highest occupational exposure.

Answer 24

Fluoroscopy