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RT 100 FINALS 1 > IMAGING SYSTEM > Flashcards

IMAGING SYSTEM Flashcards

1
Q

he discovered the x-rays

A

wilhelm conrad roentgen

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2
Q

discovery of x rays

A

november 8 1895

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3
Q

where did he discovered the xrays

A

wurzburg university in germany

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4
Q

original fluorescent material

A

barium platinocyanide

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5
Q

recent fluorescent material

A

zinc cadmium sulfide &calcium tungstate

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6
Q

Clarence Dally (1904)

A

experienced a severe xray burn that eventually required amputation of both arms, died in 1904 and is counted as the first x-ray fatality in the United States

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7
Q

william rollins

A

demonstrated the first application of collimation and filtration

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8
Q

H.C Snook (1907)

A

introduced the interrupterless transformer,
“snook transformer”

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9
Q

Williiam D. Coolidge

A

introduced the coolidge xray tube

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10
Q

why did xray emerged as a medical specialty?

A

because of snook transformer and the coolidge x-ray tube

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11
Q

Gustav Bucky (German) (1913)

A

he invented the stationary grid (“glitterblende”)

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12
Q

H. Potter (American) (1915)

A

probably unaware of Bucky’s patent because of wwii, invented a moving grid

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13
Q

when did the potter-bucky grid introduced?

A

1921

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13
Q

radiography

A

it Uses film or a solid-state image receptor and provide fixed images

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14
Q

FLUOROSCOPY

A

Conducted with an x-ray tube located under the examination table.
Provided with moving images on a television monitor or flat panel display.

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15
Q

COMPUTED TOMOGRAPHY

A

Uses a rotating x-ray source and detector array

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16
Q

wife of reoentgen

A

Anna Bertha Ludwig

17
Q

Thomas A. Edison (1898)

A

discovered the fluoroscope

18
Q

Michael Pupin (1898)

A

demonstrated the use of intensifying screen

19
Q

Charles L. Leonard (1904)

A

demonstrated the use of double emulsion film

20
Q

what is the function of x-ray imaging system?

A

The function of the x-ray imaging system is to provide a controlled flow of electrons intense enough to produce an x-ray beam appropriate for imaging.

21
Q

May be flat or curved but must be uniform in thickness and as transparent to x-rays as possible.

A

EXAMINATION TABLE

22
Q

radiolucent

A

a property of material that allows x-rays to pass through

23
Q

radio paque

A

a property of material that absorbs xray

24
Q

3 main components of xray imaging system

A
  1. xray tube
  2. operating console
  3. high voltage generator
25
Q

The fluoroscopic x-ray tube is usually located

A

under the examination table

26
Q

the radiographic x-ray tube is attached to

A

an overhead movable crane assembly that permits easy positioning of the tube and aiming of the x-ray beam.

27
Q

these couches are strong and absorb little x-radiation. This contributes to reduced patient radiation dose

A

carbon fiber

28
Q

must have a window for viewing the patient during the examination

A

protective barrier

29
Q

may be housed in an equipment cabinet positioned against a wall

A

high voltage generator

30
Q

 Radiation quantity

A

mAs, refers to the number of x-rays or the intensity of the x-ray beam.

31
Q

 Radiation quality

A

kVp, refers to the penetrability of the x-ray beam

32
Q

 Most x-ray imaging systems are designed to operate on

A

220 V power

33
Q

line compensator

A

measures the voltage provided to the x-ray imaging system and adjusts that voltage to precisely 220 V.

34
Q

 The power supplied to the x-ray imaging system is delivered first to the

A

autotransformer.

35
Q

Has a single winding

A

auto transformer

36
Q

the exposure begins at maximum mA, and the mA drops as the anode heats.

A

falling load generator

37
Q

 X-ray tube current is monitored with an mA meter that is placed

A

in the tube circuit

38
Q

Filament Transformer

A

filament heating isolation step-down transformer.

39
Q

4 types of exposure control

A
  1. synchronous timers
  2. electronic timers
  3. mAs timers
  4. automatic exposure control
40
Q

solid state radiation detectors is also called

A

semiconductor radiation detector

RT 100 FINALS 1 (2 decks)

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