Radiation Control Regulations

Question 1

Who administers “The Regulations”?

Answer 1

Ca. Dept. of Health Service, RHB

Question 2

“The Regulation” are:

Answer 2

Provisions that must be complied with

Question 3

X-ray machines must be registered with the RHB within

___of acquisition, transfer or disposal,

Answer 3

30 days

Question 4

Leakage from the x-ray tube housing, one meter away, shall measure no more than:

Answer 4

100mrad

Question 5

Which item is used to attenuate stray radiation to the required degree?

Answer 5

2nd. protective barrier

Question 6

The material placed in the useful beam to absorb preferentially the less penetrating radiation is a:

Answer 6

Filter

Question 7

What term is used to attenuate the useful beam to the required degree?

Answer 7

Leakage radiation

Question 8

Which item is used to attenuate the useful beam to the required degree?

Answer 8

Primary protective barrier

Question 9

Radiation that has been deviated in direction during passage through matter is called:

Answer 9

Scattered radiation

Question 10

The term that includes both leakage and scattered radiation is:

Answer 10

• 2nd. radiation

* stray radiation

Question 11

The radiation considered the useful beam passes through which of the following items?

Answer 11

• aperture
• x-ray window
• cone or other collimating device

Question 12

The energy imparted by ionizing radiation per unit mass of irradiated material is referred to as:

Answer 12

Absorbed dose

Question 13

The product of the absorbed dose in tissue, and the quality factor is related to:

Answer 13

• rem
• dose equivalent
• seivert

Question 14

Eye dose equivalent is:

Answer 14

• an external exposure of the lens of eye

- taken at a tissue depth of 0.3 cm

Question 15

When is an individual considered a “member of the public” during any period in which the individual received an occupational dose?

Answer 15

never

Question 16

A health effect for which a threshold is believed to exist, the severity of which varies with the dose describes:

Answer 16

• deterministic effect

- non-stochastic effect

Question 17

A/n example(s) of stochastic effects is/are:

Answer 17

• cancer incidence

- hereditary effects

Question 18

How often must an X-ray supervisor & Operator review the radiation protection program’s content & implementation?

Answer 18

Annually

Question 19

The annual dose limits for individual members of the public is:

Answer 19

0.1 rem

Question 20

Which of the following must be poster or readly available?

Answer 20

• form RH-2364
• copy of current regulation
• a sign reading “CAUTION X-RAY”

Question 21

Deliberately exposing an individual for training or demonstration is:

Answer 21

always prohibited

Question 22

The exposure must be___when the useful beam barrier/useful beam congruence (image intensifier) is removed.

Answer 22

automatically terminated

Question 23

X-ray units that are strictly fluoroscopic in nature require a___.

Answer 23

primary barrier

Question 24

in order to appropriately monitor matters during fluoroscopy, the control panel must contain which of the following device(s)?

Answer 24

KVP & MA indicator

Question 25

What do Regulation say concerning the wearing of a personnel monitoring device for the following situation: a cardiologist that is operating a C-arm?

Answer 25

it's required

Question 26

The term used to define any area where an individual could received a dose equivalent in excess of 0.005 rem (0.05mSv) in 1 hour at 30cm from the radiation source is:

Answer 26

radiation area

Question 27

The term used to define any area where an individual could received a dose equivalent in excess of 0.1 rem (1.0 mSv) in 1 hour at 30cm from the radiation source is:

Answer 27

high radiation area

Question 28

Monitored radiation dose of the embryo/fetus shall be no greater than _____ in any month. (excluding medical exposure).

Answer 28

0.05 rem (0.5 mSv)

Question 29

The SSD of mobile equipment must not be less than:

Answer 29

12"

Question 30

Which of the following are true?

Answer 30

mobile fluoroscopic equipment must always be equipped with an image intensifier

Question 31

In reference to a mobile unit, if the collomation diaphragm is not in place:

Answer 31

The fluoroscope shall not function

Question 32

Which of the following simulate a patient and are considered approved phantoms for fluoroscopic QA testing purposes?

Answer 32

9 inches of water & 7.9 inches of lucite

Question 33

Protective aprons must be worn by everyone except the patient, if one is likely to receive ____ or more.

Answer 33

5 mrads/hr

Question 34

An observation window must provide radiation attenuation _____ to that required in the surrounding barrier.

Answer 34

At least .25 mm Pb equivalent

Question 35

The operator station or shield intercept the useful beam and radiation which has been:

Answer 35

Scattered only twice

Question 36

The operator shall be able to _____ with the patient without leaving the shielded position at the control panel. I. feel II. observe III. communicate

Answer 36

II & III only

Question 37

The table top or upright film holder must not exceed ____ equivalent at 100 kVp.

Answer 37

1mm Pb

Question 38

The exposure switch on any x-ray machine, including mobile, must be of a dead-man type and be so arranged that the operator can stand at least ____ away from the useful beam.

Answer 38

6 feet

Question 39

What device is used to attenuate leakage & scattered radiation to the required degree?

Answer 39

primary protective barrier