Terminology Flashcards

(36 cards)

1
Q

Anode

A

Positively charged target in X-ray tube

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2
Q

Cathode( filament end)

A

Negatively charged target of X-ray machine

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3
Q

Most versatile device for defining the size and shape of the radiography beam

A

Collimator

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4
Q

ALARA

A

As low as reasonably achievable

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5
Q

Divides the body lengthwise into right and left portions. Cut exactly down the midline of the body, the right and left halves of the body are equal

A

Sagital plane

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6
Q

Divides the body into anterior and posterior portion the frontal plane is called the coronal plane

A

Frontal plane

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7
Q

Divides the body horizontally creating an upper (superior) and lower (inferior) body

A

Transverse plane

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8
Q

The skeletal systems consist of

A

bones joints cartilage and the ligaments associated with the joints

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9
Q

How many bones in the human body

A

206

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10
Q

Long bones

A

Longer than they are wide they are found in arms and legs

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11
Q

Short bones

A

Shaped like cubes and are primarily found in wrist and ankles

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12
Q

Flat bone

A

Thin. Flat and curved they form the ribs breast bones and skull

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13
Q

Irregular bones

A

Differently shaped and are not classified as long short or flat includes the hip bones , vertebrae and various bones in the skull

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14
Q

Peak kilovoltage(kVP)

A

The highest energy level of photons in the X-ray beam controls the quality or penetrating power of the photons in the X-ray beam

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15
Q

Milliamperes-seconds(más)

A

Product of electrons tube current and the amount of time in second that the X-ray tube activated is the main determinant of how much radiation is directed towards a patient during exposure.

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16
Q

Most versatile device for defining the size and shape of the radiography mic beam

17
Q

The prefix kilo stands for

18
Q

Which prefixe stands for 1/1000

19
Q

Atoms

A

Are the building blocks of all matter

20
Q

What element is both the filament and target made of

21
Q

Process of heating tungsten to expand the electron orbits until they create a space charge

A

Thermionic emission

22
Q

The space charge around a heated tungsten atom is____ charged

23
Q

When incoming electrons collide with the target, what are the 2 main type of radiation that occur

A

Bremsstrahlug and characteristics

24
Q

Ionizing radiation

A

Is radiation that when passing through the body produces positively &negatively charged particles

25
Radiation protection
Is the measures taken to safe guard patient, personnel and the public from unnecessary exposure to ionizing radiation
26
Airkerma
SI unit term for radiation exposure measure of the radiation intensity in air Measured with an ionizing chamber Exposure- X-ray that are in the air between the X-ray tube & the patient
27
Absorbed does
Is the amount of energy absorbed by the irradiated tissue Gy- t
28
Exposure
Mean radiation in air absorbed dose or dose used it mean absorbed does in the body
29
Exposure
Air kerma (Gy-a)
30
Absorbed dose
Gray (Gy-t)
31
Sievert (SV)
is the si systems unit of dose equivalent Milli & sv 0.200sv=200 msv
32
Linear energy transfers (let)
Is the amount of X-ray energy transferred on average per the length off passage through tissue
33
Oxygen enhancement ratio ( oer)
Is another concept that describes radiation absorbed in tissues
34
Milliamperes (mA)
Is a unit that represents the rate at which X-ray are produced
35
When the direction of the movement changes the direction of the current flow is reversed creating Ac
Electromagnetic induction
36
Spatial resolution refers to the sharpness of the radiographic image
It is primarily controlled by the OID , Sid , focal spot , motion, and quantum mottle