Basic Concept Of Radiation

Question 1

Emission of energy by atoms

Answer 1

Radiation

Question 2

Flow of atomic and subatomic particles w/ characterized heat

Answer 2

Radiation

Question 3

Travel in a form of a particle possesinh either mass or charge can cause ionization

Answer 3

Particulate radiation

Question 4

Disturbance in space in the form of wave

Answer 4

Electromagnetic radiation

Question 5

Form of energy that is a result of eletric and magnetism disturbances is space produced by charge acceleration

Answer 5

Electromagnetc energy

Question 6

Electromagentic radiation behaves as a wave and as particle

Answer 6

Wave particle duality

Question 7

Disturbances in a medium

Answer 7

Waves

Question 8

No medium required

Answer 8

EM waves

Question 9

EM wave travel in a form of a

Answer 9

Sine wave

Question 10

Speed at which the wave travels

Answer 10

Velocity (c)

Question 11

EMR travels at

Answer 11

Speed of light

Question 12

Speed of light

Answer 12

3x10^8 m/s

186,000 mi/s

Question 13

Distance between two successive crest, measured in meters/angstrom

Answer 13

Wavelength

Question 14

Number of waves passes a particular time

Answer 14

Frequency

Question 15

Frecuency is measured by

Answer 15

Hz

Cycles/sec

Question 16

Energy is _______[ to frquency

Answer 16

Directly proportional

Question 17

Speed of EMR is _________

Answer 17

Contant at the speed of light

Question 18

Energy is _______ to wagelength

Answer 18

Inversely proportional

Question 19

Act as small bundle of energy

Answer 19

Photon/quantum

Question 20

Photon energy (E ) =

Answer 20

hv

Question 21

Planck’s contant

Answer 21

4.135x10^-15 eV/sec

Question 22

Produced when high velocity electrons ar decelerated during interaction

Answer 22

Xrays

Question 23

Xreys for medical imaging ranges

Answer 23

10 keV to 100 kEv

Wavelength 10^-10 to 10^-11 meters

Question 24

Photon is mometarily absorbed by shell electron or atom as a whole

Answer 24

Classical scattering

Question 25

Photon interacts with outer shell electron of the target atom

Answer 25

Compton effect / compton scattering

Question 26

Outer shell electron and ejects it

Answer 26

Compton electron

Question 27

The greater the energy lost, _______ divergence from its original path

Answer 27

Greater

Question 28

Interaction with the inner shell electron

Answer 28

Photoelectric absorption

Question 29

Energy will travel in a different direction

Answer 29

Scatter radiation

Question 30

The ejected electron

Answer 30

Photoelectron

Question 31

Transition releases energy equivalent to the difference between the binding energies of the shells participating in the evnt

Answer 31

Characteristic radiation

Question 32

As kvp increases

Answer 32

Total number of photons increases Photoelectric interaction decreases Compton scattering increases

Question 33

Incident photon comes close to the nuclear field

Answer 33

Pair production

Question 34

Energy on pair production

Answer 34

> 1.02 MeV

Question 35

Incident photon strikes the nucleus of the atom

Answer 35

Photodisintegration

Question 36

Photodisintegration energy is above

Answer 36

10 MeV

Question 37

Result of the different atomic number of the material that make up patient's body

Answer 37

Density differences

Question 38

Xray incident on a specific part of the patient's body causing the film to darken

Answer 38

Differential absorption

Question 39

Five radiographic density

Answer 39

``` Air Fat Water Bone Metal ```

Question 40

Most radiolucent, appears dark on the radiographic image

Answer 40

Air

Question 41

Most radiopaque appears whitest in the image

Answer 41

Metal

Question 42

Capacity of matter to obstruct the transmission of radiant energy

Answer 42

Radiopaque

Question 43

Permeable to radiation permeable to radiation or penetrable by xray

Answer 43

Radiolucent

Question 44

Xray differential absorption

Answer 44

Pass through matter w/o absoption Absorb Scattered

Question 45

5 basic interaction of radiation with matter

Answer 45

``` classical scattering photoelectric effect compton effect pair production photodisintegration ```

Question 46

classical scattering requires low energy radiation of

Answer 46

1

Question 47

Compton effect requires energy

Answer 47

above 10 MeV

Question 48

pair production produces _______ with 0.51 MeV

Answer 48

positron | electron