CLOSED DOOR 5 Flashcards
The dissociation of water molecules following the irradiation is term?
RADIOLYSIS
When an atom of water is irradiated at firts dissociated into an?
ION PAIR
According to target theory, the target molecule of cell is the ?
DNA IN THE NUCLEUS
An indirect effect from ionizing radiation occur on_________molecule?
WATER
The probability of a hit is increased with _____oxygen and ______LET
HIGH, HIGH
Ionizing event from irradiation are considered to be direct effect if they occur in the_____molecule.
DNA
Dose limits are describe as
effective dose
The lens of the eyes should never receive more than____ per year
150mSv (15rem)
The tissue weighting factor has higher value for tisues with more
radiosensitivity
For the diagnotic xray personnel, the highest occupational exposure occur during _____ exam
fluoroscopy
mobile radiography
Which will be the average photon energy produced by a 100 kVp xray machine
33
Energy can be___
transmitted into smaller
Which is a unit of mass?
Kilogram
The filament transformer is a
step down transformer
In the equation (E = hf) the h is
Planks constant
If the secondary coil has 500 more turns than the primary coil, what is the relationship between the secondary voltage to the primary voltage?
500
This is designed to measure the flow of electron in a conductor.
Ammeter
Which of this cancer induced by radiation appear threshold?
skin cancer
When will the non-lethal radiation hazard to an embryo occur?
During Third Trimester
Which is closely related to the half value layer (HVL) concept in radiation protection principle?
Shielding
Changes to DNA rather the chromosomes are called
Point mutation
Which is NOT included in the acute radiation syndrome?
Latent
As LET _____, RBE _____
increases, increases
What do you call a wall of xray room known to be hit by scattering and leakage?
secondary wall
