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1
Q

It is the greatest impact on diagnostic equipment in radiology during the last 2 decades:

a. Subtraction technique
b. Computed tomography
c. Magnetic resonance imaging
d. Digital subtraction angiography

A

B,C,D

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2
Q

What is the major problem usually encountered in DSA?
a. Misregistration
b. Positioning
c. Preparation
d. All of the above

A

A

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3
Q

Picture elements are also known as:
a. Memory
b. CPU
c. Pixels
d. Image receptor

A

C

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4
Q

Hardcopies of a study can be obtained with use of:
a. Digital subtraction angiography
b. Fluoroscopic monitor
c. Image receptor
d. Multiformat camera or laser images

A

D

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5
Q

Diagnostic purpose in digital subtraction angiography:
a. Allow examination of blood flow to the head
b. Detects and evaluates abnormalities in blood circulation to the brain
c. Helps study results of surgery
d. All of the aboveD

A

D

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6
Q

Which of the following is/are risks and precaution during digital subtraction angiography procedures? a. Patient poor cardiac function
b. Kidney disease
c. Liver disease
d. All of the above

A

D

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7
Q

Which of the following is not included in the pathologic conditions that can be seen in digital subtraction angiography? a. Myelogenesis
b. Cerebral aneurysms
c. Angiomas
d. Stenosis

A

A

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8
Q

Which of the following is not included in the patient preparation?
a. Don’t eat any food
b. No fluids
c. Nothing per orem
d. Full meal

A

D

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9
Q

Digital subtraction angiography is the procedure done to demonstrate:
a. Opacified blood vessels
b. Bony structures
c. Fracture
d. deformity

A

A

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10
Q

DSA is the procedure that can visualize the following except:
a. Opacified vessels
b. Stenosis
c. Thrombus
d. fracture

A

D

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11
Q

Which is not a major component of an X-ray Imaging facility?
a. Rectifier
b. Control Console
c. High voltage generator
d. X-ray tube

A

A

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12
Q

It is a technical factor that is responsible for penetrating body parts and brings beam to the image receptor: a. mAs
b. Density
c. Kilovoltage peak
d. mA

A

C

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13
Q

It is the relationship between actual and effective focal spot:
a. Line focus principle
b. Inverse square law
c. All of the above
d. None of the above

A

A

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14
Q

Which of the following is a unit used for electric potential:
a. Milliampere
b. Kilovoltage
c. Ohms
d. All of the above

A

B

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15
Q

It is a measure of multiplying milliamperage, kilovoltage peak and the generator constant:
a. Hounsfield units
b. Heat units
c. Ohm`s law
d. None of the above

A

B

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16
Q

These systems are useful when examining objects in rapid motion or when studying transient events such as the tripping of an electrical breaker:
a. Flash X-ray generator
b. Simple generator
c. Full phase generator
d. X-ray tube

A

A

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17
Q

It is a transformer that has one winding and one coil:
a. Step down transformer
b. Step up transformer
c. Autotransformer
d. Automatic transformer

A

C

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18
Q

Transformers operate in what specific principle?
a. Hormesis
b. Electromagnetic induction
c. Electromagnetism
d. Magnetic laws

A

B

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19
Q

It is a special type of transformer used in x-ray machine that increases the output voltage:
a. Autotransformer
b. Step up transformer
c. Step down transformer
d. Automatic Transformer

A

B

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20
Q

It is a special type of transformer used in x-ray machine that decreases the output voltage:
a. Autotransformer
b. Step up transformer
c. Step down transformer
d. Automatic transformer

A

C

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21
Q

It is the negatively part and electrode of an x-ray tube:
a. Anode
b. Cathode
c. Filament
d. Tungsten

A

B

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22
Q

It is referred to as the boiling off of electrons ready to be ejected to the anode target to complete X-ray production: a. Ionization
b. Cloud seeding
c. Electron cloud
d. Thermionic Emission

A

D

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23
Q

It is the relationship between actual and effective focal spot:
a. Line focus principle
b. Inverse square law
c. All of the above
d. None of the above

A

A

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24
Q

X-ray beam is heterogeneous in:
a. Physical
b. Nature
c. Solid state
d. Visible

A

C

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25
Q

When certain materials are struck with x-rays, they give off visible light; this property is called: a. Remnant rays
b. Ionize gas
c. Radiation
d. Fluorescence

A

D

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26
Q

X-rays will cause skin to redden and may destroy tissues:
a. Chemically
b. Photographically
c. Physiologically
d. Ionization

A

C

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27
Q

It is a device that generates x-rays and specially designed vacuum tube with two electrodes: a. Collimator
b. Fluoroscopic monitor
c. Camera
d. X-ray tube

A

D

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28
Q

Which of the following is not one of the properties of x-rays?
a. X-ray will ionize any gas it pass through
b. Cause electrons to move at high speed
c. X-rays are produced by electrons bombarding a hard target
d. Affect photographic film

A

D

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29
Q

Milliampere per second (mAs) primarily controls which of the following?
a. Radiographic detail
b. Distortion
c. Density
d. Contrast

A

C

30
Q

The glass envelope contains two electrodes. These are:
a. Anode and cathode
b. Tube housing
c. Positive and negative
d. X-ray tube

A

A

31
Q
  1. It is a vacuum that operates by converting photons of light into electrons, amplifying the electrons, and then converting the amplified electrons back into photons for viewing:
    a. Image receptor
    b. Image Intensifier
    c. Image reconstruction
    d. None of the above
A

B

32
Q

It is a device that converts low levels of light from various wavelengths into visible quantities of light at a single wavelength:
a. Sensitometer
b. Intensifier
c. Image intensifier tube
d. X-ray tube

A

C

33
Q

It is made up of thousands of tiny conductive channels, tilted at an angle away from normal to encourage more electron collisions:
a. Intensifier tube
b. Midcoronal plane
c. Midsagittal plane (MSP)
d. Microchannel plate (MCP)

A

D

34
Q

It was an image intensifier was used by the military during World War II which allowed vision at night with infrared lighting for both shooting and personal night vision:
a. Generation 0
b. Generation 1
c. Generation 3
d. Generation 4

A

A

35
Q

It is a second generation image intensifier that uses the same multialkali photocathode:
a. Imaging plate
b. Micro-channel plate
c. Generator
d. High frequency generator

A

B

36
Q

Thin film image intensifiers was developed under what generation?
a. Generation 0
b. Generation 1
c. Generation 3
d. Generation 4

A

C

37
Q

It was when the US company Litton developed filmless image tube:
a. 1999
b. 1998
c. 1988
d. 1997

A

B

38
Q

It functions like a camera shutter allowing images to pass through when an electronic gate is enabled: a. Intensification
b. Gating
c. Electromagnetism
d. Magnetic laws

A

B

39
Q

It is a feature found in many image intensifier tubes that occurs at high frequency and by varying the duty cycle to maintain a constant current draw from the microchannel plate:
a. Gating
b. Phosphorescence
c. Intensification
d. Autogating

A

D

40
Q

It defines how many electrons are produced per quantity of light that falls on the photocathode: a. Gain
b. Resolution
c. Sensitivity
d. None of the above

A

D

41
Q

Which of the following gradually decrease during the lifetime of an image intensifier?
a. Spatial resolution
b. Contrast resolution
c. All of the above
d. None of the above

A

C

42
Q

It is caused by the unequal collection of light at the center of the image intensifier compared with the light at its periphery: a. Lag
b. Vignetting
c. Veiling Glare
d. Pincushion Distortion

A

B

43
Q

It is the scattering of light and the defocusing of photoelectrons within the image intensifier:
a. Vignetting
b. Pincushion Distortion
c. Veiling Glare
d. S Distortion

A

C

44
Q

It is a geometric, nonlinear magnification across the image:
a. Veiling Glare
b. S Distortion
c. Pincushion Distortion
d. Lag

A

C

45
Q

It is a phenomenon wherein electrons within the image intensifier move in paths along designated lines of flux: a. S Distortion
b. Veiling Glare
c. Lag
d. Pincushion Distortion

A

A

46
Q

It degrades the temporal resolution of the dynamic image:
a. S Distortion
b. Veiling Glare
c. Lag
d. Pincushion Distortion

A

C

47
Q

It is defined as the brightness ratio of the periphery to the center of the output window:
a. Brightness gain
b. Contrast ratio
c. Conversion Factor
d. None of the above

A

B

48
Q

Transformers operate in what specific principle?
a. Conversion factor
b. Contrast ratio
c. Brightness gain
d. Flux gain

A

D

49
Q

It is defined as the ratio of input area to the output area of the image intensifier: a. Minification gain
b. Flux gain
c. Brightness gain
d. Contrast ratio

A

A

50
Q

Which of the following is not a major component of an image intensifier?
a. Input window
b. Input phosphor
c. Image receptor
d. Photocathode

A

C

51
Q

Which of the following gradually decrease during the lifetime of an image intensifier?
a. Spatial resolution
b. Contrast resolution
c. All of the above
d. None of the above

A

C

52
Q

It is caused by the unequal collection of light at the center of the image intensifier compared with the light at its periphery:
a. Lag
b. Vignetting
c. Veiling Glare
d. Pincushion Distortion

A

B

53
Q

It is the scattering of light and the defocusing of photoelectrons within the image intensifier:
a. Vignetting
b. Pincushion Distortion
c. Veiling Glare
d. S Distortion

A

C

54
Q

It is a geometric, nonlinear magnification across the image:
a. Veiling Glare
b. S Distortion
c. Pincushion Distortion
d. Lag

A

C

55
Q

It is a phenomenon wherein electrons within the image intensifier move in paths along designated lines of flux: a. S Distortion
b. Veiling Glare
c. Lag
d. Pincushion Distortion

A

A

56
Q

It degrades the temporal resolution of the dynamic image:
a. S Distortion
b. Veiling Glare
c. Lag
d. Pincushion Distortion

A

C

57
Q

It is defined as the brightness ratio of the periphery to the center of the output window:
a. Brightness gain
b. Contrast ratio
c. Conversion Factor
d. None of the above

A

B

58
Q

Transformers operate in what specific principle?
a. Conversion factor
b. Contrast ratio
c. Brightness gain
d. Flux gain

A

D

59
Q

It is defined as the ratio of input area to the output area of the image intensifier:
a. Minification gain
b. Flux gain
c. Brightness gain
d. Contrast ratio

A

A

60
Q

Which of the following is not a major component of an image intensifier?
a. Input window
b. Input phosphor
c. Image receptor
d. Photocathode

A

C

61
Q

It was a major technological accomplishment first implemented during the 1950`s:
a. Recording of radiographs in a film
b. Recording of videos in a film
c. Recording of video signals on a magnetic tape
d. Recording of dynamic heart movement

A

C

62
Q

It is a technique in which two recording heads are embedded on opposite sides of a cylinder that is rapidly rotated as the tape is drawn past at an angle:
a. Axial-scan recording
b. Helical-scan recording
c. Recording technique
d. mA regulation technique

A

B

63
Q

The first home VCRs were first introduced in the mid-1970s by:
a. Sharp
b. Samsung
c. Mitsubishi
d. Sony

A

D

64
Q

It is a 300-mm plastic disc on which signals were recorded as a sequence of variable-length pits: a. VCH
b. LaserDisc
c. Diskette
d. CD

A

B

65
Q

Digital video disc (DVD) is also known as what?
a. Automated disc
b. Automatic disc
c. Photographic disc
d. Digital versatile disc

A

D

66
Q

It is a method in which magnetic recording is made simultaneously with the live-action pickup: a. Flash x-ray generation
b. Simple replay
c. Full phase replay
d. Instant replay

A

D

67
Q

This technique removes the image from one camera while inserting the image from another, with a sharp, moving boundary between them:
a. Wipe
b. Stripe
c. Brisk
d. Transform

A

A

68
Q

These are used to create graphics and text broadcast over television, particularly in news and weather programs: a. Interconnecting graphics
b. Interactive computer graphics
c. Electromagnets
d. Magnetic graphics

A

B

69
Q

It is a form of television pickup device used to record images from film transparencies, either still or motion-picture: a. Printed scanner
b. Flying spot scanner
c. CT scanner
d. Automatic Transformer

A

B

70
Q

It is a technique wherein the film is projected onto an image sensor for conversion into a video signal: a. Intermittent projector
b. Continuous projector
c. Telecine
d. Photosensor

A

C

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