merge 3

Question 1

A quantity that reflects not only the dose but also the volume of tissue irradiated

Answer 1

INTENSITY

Question 2

• The useful beam
• The most intense, hazardous and
  difficult to shield

Answer 2

Primary Radiation

Question 3

results when the useful
beam intercepts any objects causing some xrays
to be scattered

Answer 3

SCATTER RADIATION

Question 3

radiation emitted from
the x-ray tube housing in all directions other than
that of the useful beam

Answer 3

LEAKAGE RADIATION

Question 4

• Any wall to which the useful beam can be directed

EXAMPLES:
- Lead bonded
- Sheet rock
- wood paneling

Answer 4

PRIMARY BARRIER (7FT TALL)

Question 5

• designed to shield
  secondary radiation

EXAMPLES:
- operating console
- barrier ceiling
- walls
- 5 to 8 inches gypsum
board

Answer 5

SECONDARY PROTECTIVE BARRIER

Question 6

the use of the area that is being protected is of
principal importance

Answer 6

OCCUPANCY

Question 7

Express in: milliAmpere-minutes
per week (mAmin/week)
- The level of radiation activity in the room
- Product of the maximum mA and the number
of x-ray examinations performed per week
- Shielding is required for an X-ray examination
room depends on the level of radiation activity in
that room

Answer 7

WORKLOAD (W)

Question 8

The percentage of time during which the x-ray
beam is on and directed toward a particular
protective barrier

Answer 8

USE FACTOR (U)

Question 9

• Used as the measure of penetrability
• Final consideration in the design of protective barrier

Answer 9

kVp

Question 10

General Radiography kVp use

Answer 10

100kVp

Question 11

Mammography use kVp

Answer 11

30kVp

Question 12

Modern X-ray Imaging system use how mush kVp?

Answer 12

150kVp

Question 13

Most examination use how much kVp

Answer 13

75kVp