Radiology module 2

Question 0

Atoms are the —- of matter
They have a central —-
With electrons where?

Answer 0

Fundamental unit
Nucleus
Orbiting around the nucleus

Question 1

X-rays were discovered by—- in what year ?

Answer 1

Wilhelmina Roentgen

1895

Question 2

The nucleus is composed of?

Answer 2

Protons (+)

Neutrons (-)

Question 3

Ionization is the process of what?

Answer 3

(Production of ions)

Converting an atom, which is neutral, into ions which are negatively charged!

Question 4

Radiation definition?

Answer 4

Form of energy in waves or particles

Question 5

Radioactivity definition

Answer 5

Unstable atom/element that undergoes spontaneous disintegration or decay

Question 6

X-radiation is produced by conversion of — to —

Answer 6

Electrical Energy

Radiation

Question 7

X-rays are — and consit of —

Answer 7

Invisible

Photons (energy)

Question 8

X-rays move in the form of —

Answer 8

Transverse waves

Question 9

MA is part of the — transformer

Answer 9

Step down

Question 10

Kvp is part of the — transformer

Answer 10

Step up

Question 11

— Volts come from the wall into the machine.
Then the —- steps down the voltage to — to — volts
Then the — steps up the voltage to — to — volts

Answer 11

110
MA
3-5
Kvp
65,000-100,000

Question 12

The cathode has a — charge

Answer 12

Negative

Question 13

The anode has a — charge

Answer 13

Positive

Question 14

MA has to do with the — of x-rays

Answer 14

Quantity

Question 15

Increasing the MA results in — films or an —– density

Answer 15

Darker

Increased

Question 16

Kvp has to do with the — of the

x-rays

Answer 16

Quality

Question 17

Increasing kvp produces — more

—-wavelengths?

Answer 17

Shorter

penetrating

Question 18

Increasing kvp results in —- or — contrast

Answer 18

Long scale

Low

Question 19

In the process of x-ray production what percentage is heat poduction and what is actual x-ray production?

Answer 19

99% heat

1% x-ray

Question 20

A photon is a unit of energy that is converted from — to —-

Answer 20

Kinetic energy

Electromagnetic energy

Question 21

Primary radiation deals with?

Answer 21

Part that actually exits the tube head

penetrating beam

Question 22

Secondary radiation deals with —-

And is — penetrating than the primary beam

Answer 22

Primary beam interacting with matter (skin,bones)

Less

Question 23

Scatter radiation is a form of —- that results from?

Answer 23

Secondary radiation

Rays being deflected by interaction with matter

Question 24

The major source of x-ray and heat production is coined?

Answer 24

Bremsthrahlen or “breaking down”

Question 25

—– radiation is a very small part of x-ray production and is only seen at >70kvp

Answer 25

Characterisic

Question 26

X-rays can have 1/3 interactions with matter. They are?

Answer 26

Pass through - no interaction
Photons get absorbed by patient
Photons are scattered

Question 27

70% of radiation is of what type?

Answer 27

Bremsstrahlung