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Xray > Chapete -123 > Flashcards

Chapete -123 Flashcards

1
Q

When and what was the first X-ray of

A

December 22 1895, of wilhelm’s wife’s hand

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2
Q

Radiograph

A

Image produced on photosensitive film by exposure to X-rays. Developing the film produces a negative image that can be viewed and interpreted

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3
Q

Radiology

A

The branch of medical science that deals with the use of radiant energy in the the diagnosis and treatment of disease

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4
Q

Radiography

A

The making of radiographs by exposing and processing X-ray film

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5
Q

X-ray

A

Radiant energy of short wavelength that had the power to penetrate substances and to record shadow images on photographic film

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6
Q

Matter

A

Anything that occupies space and has mass

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7
Q

Energy

A

As the ability to do work and overcome resistance, when matter is altered

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8
Q

Atom

A

Is the smallest particle of an element that still retains the properties of the element, the fundamental unit of matter

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9
Q

Electrons

A

Have a negative charge orbiting the nucleus

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10
Q

Protons

A

+ charge, the number of protons in the nucleus of an element determines its atomic number

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11
Q

Neutrons

A

Have no charge

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12
Q

What happened when negative particle gets knocked out?

A

The atom is now unbalanced and is an ion

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13
Q

Radioactivity

A

The process whereby certain unstable elements undergo spontaneous disintegration in an effort to attain a stable nuclear state ( when atoms break apart)

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14
Q

Who is Wilhelm roentgen

A

Father of diagnostic radiology

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15
Q

Radioactivity

A

Process whereby certain unstable almonds undergo spontaneous this in any effort to retain a stable state. X-rays do not involve the use of radioactivity

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16
Q

Electromagnetic radiations

A

Are man-made or occur naturally examples include is cosmic rays gamma rays x-rays ultraviolet rays visible light temporarily radiant waves microwaves and radio waves

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17
Q

Electromagnetic radiation travels at the speed of light

A

T

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18
Q

Electromagnetic radiation’s have electrical charge

A

F: they have a no charge

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19
Q

Electromagnetic radiation has mass and weight

A

F: has no mass or weight

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20
Q

Electromagnetic radiation has to space as particles and in a circle motion

A

False: passes through space as particles in a wave length motion

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21
Q

Electromagnetic radiation’s give goff an electrical field at right angles to their path of travel and a magnetic field at right angles to the electric electric field

A

True

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22
Q

Electromagnetic radiation have energies that cannot be measured and are not different

A

False they have energies that are measurable and different pens the electromagnetic spectrum

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23
Q

Wavelength

A

Is the distance between two similar points on two successive waves

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24
Q

Frequency

A

Is a measure of the number of waves that pass a given point per unit of time

25
Q

Velocity

A

Refers to the speed of the wave. In a vacuum all electromagnetic radiation’s travel at the speed of light

26
Q

What is the difference between long and short wavelengths

A

Long wavelengths, low frequency, low energy, less penetrating x-ray BAD

Short wavelengths, high frequency, high-energy, more penetrating x-ray

27
Q

General radiation (braking radiation)

A

Speeding electrons slow down because of their interaction with the tungsten target ( on the anode). This happens when the electron cloud hit the anode

28
Q

Characteristic radiation

A

When a high speed electron dislodges an inner shell electron from the tungsten atom and causes ionization

29
Q

Match the traditional units with systeme international scale

A)rem. d)gray
B)roentgen E) sievert
C) rad. F) coulombs

A

Rem- sievert
Rad- gray
Roentgen- sievert

30
Q

Exposure

A

Can be defined as the measurement of ionization in air produced by x-Rays. Does not become a dose until radiation is absorbed my tissue

31
Q

Which unit is used to measure exposure

A

Roentgen- Columbus

32
Q

Absorbed dose

A

The amount of energy deposited in any form of matter by any time of radiation

33
Q

What unit of measurement is used to measure absorbed dose

A

Gray and rad

34
Q

Does equivalent

A

Used for radiation protection purposes to compare the biological effects of various types of radiation. Product of the absorbed dose times a biological- effect

35
Q

What unit is used to measure dose equivalent

A

Rem sievert

36
Q

Coulomb and roentgen are measurements of X-ray exposure in the air

A

T

37
Q

Gray and rad are the amount of Energy the tissue absorbs

A

T

38
Q

Sievert and rem reprints the relative biological effect of radiation absorbed in the body tissue

A

T

39
Q

The most common artificial radiation exposed comes from biological radiation

A

F : comes from medical

40
Q

Milliampere selector

A

Measures the amount of current passing through the wires of circuit never changes

41
Q

Kilovoltage peak selector

A

Enables the operator to change the peak kilovoltage

42
Q

Leaded glass housing

A

Metal body of the tube head that surrounds the x-Ray tube and transformer and is filled with oil

43
Q

Insulating oil

A

The oil that surrounds the X-ray tube and transformers inside the tube head preventing over hearing by absorbing the heat created by production of x-Rays

44
Q

Aluminum disks

A

Sheets of .5mm thick aluminum places in the path of the x-Ray beam and absorbs photon ways of long wavelengths

45
Q

Electric current

A

Enters the control panel either through a cord plugged into a grounded outlet

46
Q

Rectification

A

Converts ac to dc x-Ray tube self rectifier while producing X-rays. Ensures the current is always flowing in the same direction, more specifically from the cathode to anode

47
Q

Transformer

A

Electromagnetic device got charging the current coming into the dental X-ray ( in tube head)

48
Q

Step down transformer

A

Used to decrease the voltage 110-220 line voltage to the 3-5 volts used by the filament

49
Q

Step up transformer

A

Used to increase the voltage from the incoming 110-220 to 6500 to 100,000 used by high voltage circuit

50
Q

Auto transformer

A

Serves as a voltage compensator that corrects for minor fluctuations in the current

51
Q

Ampere

A

Unit of quantity of the electric current. Increase in amperage results in an increase in the number of electrons that is avian me to travel from the cathode to anode

52
Q

Voltage

A

Electrical pressure between two electrical charges. Determines the speed of the electrons when traveling from the cathode to anode

53
Q

Cathode

A

Negative electrode, consists of a tungsten wire filament in a cup shape holder made of molybdenum. It’s purpose is to supply the electrons necessary to generate x-rats

54
Q

Anode (target)

A

Positive electrode, consists of a wafer-thin tungsten plate embedded in a solid copper Rod. It’s purpose of the Node is to convert electrons into x-Rays photons. Where x-Rays originate in the X-rays

55
Q

Quality

A

is used to describe the mean energy or penetrating ability of x-Ray. Controlled by kilovoltage

56
Q

Quantity

A

Refers to the # of X-rays produced in dental X-ray

57
Q

Intensity

A

Production of the quantity and quality per unit of area per unit of time if exposure

58
Q

Ionizations

A

Occurs when an X-ray photon cause the negative particle to be knocked out, the atom is now unbalanced and in an ion

Xray (1 decks)

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