Doc 3

Question 1

Sources of Radiation Exposure

Answer 1

Natural or Background
Artificial or Man-made

Question 2

• traditional unit of exposure in air

Answer 2

Roentgen(R)

Question 3

-traditional unit of absorbed dose [all]

Answer 3

rad (r)

Question 4

• traditional unit of dose equivalent [x, beta, gamma]

Answer 4

rem

Question 5

• measure of radioactivity

Answer 5

Curie (Ci)

Question 6

• if patient holds cassette, Pb glove needs to be ___ to protect hand

Answer 6

0.5 mm

Question 7

Cardinal Principles

Answer 7

Time, Distance, Shielding

Question 8

ALARA

Answer 8

As Low As Reasonably Achievable

Question 9

Cumulative Dose Limit for Occupational Worker

Answer 9

age x 1 rem

Question 10

Recommended dose for Embyro or fetus

Answer 10

50mrem/month or 500 mrem total

Question 11

Recommende dose for the Member of public frequently exposed

Answer 11

100mrem

Question 12

Estimated patient doses

Answer 12

Skin - TLD 15, 000mrem and extremities 30,000 mrem
Gonad – genetic responses at 20rads/yr
Bone Marrow (mean) - rad induced leukemia 100 rad/yr

Question 13

Exams with higher patient doses are:

Answer 13

•Fluoro
• Angio
• Portables
• General

Question 14

Shielding reduces dose as much as ___ in male patients

Answer 14

95%