POI Flashcards
(68 cards)
1
Q
- Uses film and cassette
A
Conventional Radiograph
2
Q
- Utilize capture element
A
CR-DR
3
Q
1st to propose that matter is made up of tiny indivisible element called ATOM
A
John Dalton
4
Q
- Plum pudding method
A
JJ Thompson
5
Q
- Identify nucleus
- Define miniature of solar system
A
Ernest Rutherford
6
Q
- Supports Ernest’s theory
- States that there are different energy per orbit
A
Neils Bohr
7
Q
- discovered the neutron in 1932
A
James Chadwick
8
Q
3 Aspects of Physical Science
A
Electricity
Vacuum
Image Recording Materials
9
Q
- The light is not even when used in film
A
Scintillator
10
Q
- The distribution of light is even because of high atomic number
A
Phosphor
11
Q
Capability of the energy to pass thru a material
A
Penetration
12
Q
- Discovery of x-ray
A
Nov. 8, 1895
13
Q
Roentgen submitted a report entitled “On a new Kind of Rays” to Wurzburg
A
Dec. 28, 1895
14
Q
First Nobel Prize in physics
A
1901
15
Q
Roentgen died in Munich
A
Feb. 10, 1923
16
Q
- Define as the use of ionizing radiation to produce a recorded image on photosensitive material
A
Radiography
17
Q
The image produce using an x-ray is called
A
Radiograph
18
Q
- Represents the image recorded on photosensitive material called XRAY FILM
A
Radiograph
19
Q
- Refers to the difference of radio density present in our radiograph
A
Contrast
20
Q
- Degree of blackening
A
Density
21
Q
THE TERM USE IS _________ WHEN REFERING TO THE DENSITY AND CONTRAST
A
Adequate
22
Q
Refers to radiation that has both electrical and magnetic force
A
Electromagnetic Radiation
23
Q
- X-rays act both the wave and like particles
A
The dual nature of x-ray energy
24
Q
- Is described as a bundle of energy
A
Photon
25
- Number of cycles per unit time
Frequency
26
- Distance between the 2 crests
Wavelength
27
- High frequency
- High energy
- High penetration
Short wavelength
28
- Low frequency
- Low energy
- Low penetration
Long wavelength
29
Cause of scattered radiation
High kVp
30
Study of the interaction of electromagnetic radiation with matter resulting into a physical change or chemical creation
Photochemistry
31
Recording Material of conventional
Film
32
Recording Material of CR-DR
Flat panel
33
3 Factors
kVp
mAs
exposure time
34
- is a negatively charge electrode.
- Composed of filament and focusing cup
Cathode
35
- surround the filament determining the pathway of electricity
Focusing Cup
36
- source of electron
Filament
37
- is a positively charged electrode, it consists of a target and, in rotating anode tubes, a stator and rotor
Anode
38
- Metal that abruptly decelerate and stop the electron
Target
39
2 types of target
Rotating and Stationary
40
- must have 3000 -10,000 revolution
Rotating
41
- Can withstand higher heat loads than stationary anodes
Rotating Anodes
42
- melting point in 3410°c
- Atomic no. 74
- Use because of high melting point
Tungsten
43
- Electric motor that turns the rotor at very high speed
Stator
44
- connected to the target thru the anode stem
- Made up of copper
Rotor
45
- Heat that is produced when the x-ray exposure is made
- Rotating anode conducts the heat to insulating
Dissipating Heat
46
OIL/COOLANT
Diala (toyota)
47
- Known as Edison effect
- Production of heat
Thermionic Emission
48
- The amount of heat being produced on Cathode side
2,200- 2,500
49
- total amount of heat
2,500 - 3000
50
- Interaction in X-ray Production
Bremsstrahlung and Characteristic
51
- 2 interactions in Image Production
Photoelectric and Compton Effect
52
- Electrons flow in only one direction in the x-ray tube-from cathode to anode
Tube current
53
- technical factor responsible for tube current AND QUANTITY
mA
54
– use when there is numerical value
Directly Proportional
55
RELATIONSHIP OF SPEED OF ELECTRON AND QUALITY
Directly Related
56
- Relationship of mAs AND QUANTITY
Directly Proportional
57
– the smaller the angle the smaller the focal spot
Anode heel effect
58
- Range/Angulation of anode heel effect
7-20°
59
- use in general radiography
- use in high spatial resolution(completeness of radiograph)
7-12°
60
- use in fluoroscopy
15-20°
61
- Relationship between Anode angle and Heat dissipation
Directly Proportional
62
- Refers to the focal size as measured directly under the anode target
Effective Focal spot size
63
- Used to even out photons
- enhanced the intensity of radiation
Filtration (filters)
64
- Added filtration
Aluminum
65
- Permanently in the path of the x-ray beam
Inherent Filtration
66
- Special filter (special type)
Compensating filter
67
- 2 types of Compensating filters
Wedge filter and trough filter
68
- most common type of Compensating filters
Wedge
