CLOSED DOOR 5

Question 1

The dissociation of water molecules following the irradiation is term?

Answer 1

RADIOLYSIS

Question 2

When an atom of water is irradiated at firts dissociated into an?

Answer 2

ION PAIR

Question 3

According to target theory, the target molecule of cell is the ?

Answer 3

DNA IN THE NUCLEUS

Question 4

An indirect effect from ionizing radiation occur on_________molecule?

Answer 4

WATER

Question 5

The probability of a hit is increased with _____oxygen and ______LET

Answer 5

HIGH, HIGH

Question 6

Ionizing event from irradiation are considered to be direct effect if they occur in the_____molecule.

Answer 6

DNA

Question 7

Dose limits are describe as

Answer 7

effective dose

Question 8

The lens of the eyes should never receive more than____ per year

Answer 8

150mSv (15rem)

Question 9

The tissue weighting factor has higher value for tisues with more

Answer 9

radiosensitivity

Question 10

For the diagnotic xray personnel, the highest occupational exposure occur during _____ exam

Answer 10

fluoroscopy
mobile radiography

Question 11

Which will be the average photon energy produced by a 100 kVp xray machine

Answer 11

33

Question 12

Energy can be___

Answer 12

transmitted into smaller

Question 13

Which is a unit of mass?

Answer 13

Kilogram

Question 14

The filament transformer is a

Answer 14

step down transformer

Question 15

In the equation (E = hf) the h is

Answer 15

Planks constant

Question 16

If the secondary coil has 500 more turns than the primary coil, what is the relationship between the secondary voltage to the primary voltage?

Answer 16

500

Question 17

This is designed to measure the flow of electron in a conductor.

Answer 17

Ammeter

Question 18

Which of this cancer induced by radiation appear threshold?

Answer 18

skin cancer

Question 19

When will the non-lethal radiation hazard to an embryo occur?

Answer 19

During Third Trimester

Question 20

Which is closely related to the half value layer (HVL) concept in radiation protection principle?

Answer 20

Shielding

Question 21

Changes to DNA rather the chromosomes are called

Answer 21

Point mutation

Question 22

Which is NOT included in the acute radiation syndrome?

Answer 22

Latent

Question 23

As LET _____, RBE _____

Answer 23

increases, increases

Question 24

What do you call a wall of xray room known to be hit by scattering and leakage?

Answer 24

secondary wall

Question 25

What is considered a biologic dose modification factor?

Answer 25

Oxygen Effect