Radiation Control Regulations Flashcards
(39 cards)
Who administers “The Regulations”?
Ca. Dept. of Health Service, RHB
“The Regulation” are:
Provisions that must be complied with
X-ray machines must be registered with the RHB within
___of acquisition, transfer or disposal,
30 days
Leakage from the x-ray tube housing, one meter away, shall measure no more than:
100mrad
Which item is used to attenuate stray radiation to the required degree?
2nd. protective barrier
The material placed in the useful beam to absorb preferentially the less penetrating radiation is a:
Filter
What term is used to attenuate the useful beam to the required degree?
Leakage radiation
Which item is used to attenuate the useful beam to the required degree?
Primary protective barrier
Radiation that has been deviated in direction during passage through matter is called:
Scattered radiation
The term that includes both leakage and scattered radiation is:
- 2nd. radiation
* stray radiation
The radiation considered the useful beam passes through which of the following items?
- aperture
- x-ray window
- cone or other collimating device
The energy imparted by ionizing radiation per unit mass of irradiated material is referred to as:
Absorbed dose
The product of the absorbed dose in tissue, and the quality factor is related to:
- rem
- dose equivalent
- seivert
Eye dose equivalent is:
- an external exposure of the lens of eye
- taken at a tissue depth of 0.3 cm
When is an individual considered a “member of the public” during any period in which the individual received an occupational dose?
never
A health effect for which a threshold is believed to exist, the severity of which varies with the dose describes:
- deterministic effect
- non-stochastic effect
A/n example(s) of stochastic effects is/are:
- cancer incidence
- hereditary effects
How often must an X-ray supervisor & Operator review the radiation protection program’s content & implementation?
Annually
The annual dose limits for individual members of the public is:
0.1 rem
Which of the following must be poster or readly available?
- form RH-2364
- copy of current regulation
- a sign reading “CAUTION X-RAY”
Deliberately exposing an individual for training or demonstration is:
always prohibited
The exposure must be___when the useful beam barrier/useful beam congruence (image intensifier) is removed.
automatically terminated
X-ray units that are strictly fluoroscopic in nature require a___.
primary barrier
in order to appropriately monitor matters during fluoroscopy, the control panel must contain which of the following device(s)?
KVP & MA indicator