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Test 7

Question 1 of 50

1

Select from the dropdown lists to complete the text.

( Absorption coefficient, Detective quantum efficiency (DQE) ): Determines how far into a material photons of a particular wavelength can penetrate before it is absorbed
( Detective quantum efficiency (DQE), Absorption coefficient ): The percentage of photons absorbed in a material per given exposure

Explanation

Question 2 of 50

1

Select from the dropdown list to complete the text.

The higher the DQE, the more ( efficient, inefficient ) the system is

Explanation

Question 3 of 50

1

The higher the frequency, the more penetrating the photon is

Select one of the following:

  • True
  • False

Explanation

Question 4 of 50

1

Select from the dropdown list to complete the text.

The higher the DQE = ( less, more ) radiation you use

Explanation

Question 5 of 50

1

Select from the dropdown lists to complete the text.

From highest to lowest in efficiency of turning photons into light
( DR, CR, Screen ) --> ( CR, DR, Screen ) --> ( Screen, DR, CR )

Explanation

Question 6 of 50

1

How many shades of gray can be produced by a photon beam?

Select one of the following:

  • 1,000

  • 10,000

  • 16,000

  • 1,600

Explanation

Question 7 of 50

1

A DR system can produce how many shades of gray?

Select one of the following:

  • 1,000

  • 10,000

  • 1,6000

  • 16,000

Explanation

Question 8 of 50

1

Select from the dropdown lists to complete the text.

Window width: ( Controls contrast, Control density )
Window height: ( Controls density, Controls contrast )

Explanation

Question 9 of 50

1

What does a wide window width do?

Select one of the following:

  • Decreases contrast

  • Increases contrast

Explanation

Question 10 of 50

1

What does a high window height do?

Select one of the following:

  • Image becomes darker

  • Image becomes lighter

Explanation

Question 11 of 50

1

Select from the dropdown lists to complete the text.

( Contrast resolution, Spatial resolution ): Visibility of detail
( Spatial resolution, Contrast resolution ): Clarity, how clear a part it

Explanation

Question 12 of 50

1

Select from the dropdown lists to complete the text.

( Spatial resolution, Contrast resolution ): measured by MTF
( Contrast resolution, Spatial resolution ): measured by SNR

Explanation

Question 13 of 50

1

Select from the dropdown list to complete the text.

( Amplitude, Frequency ) is how much energy a signal has

Explanation

Question 14 of 50

1

Select from the dropdown list to complete the text.

As parts get smaller, blur ( increases, decreases )

Explanation

Question 15 of 50

1

You can image objects smaller than the pixel size

Select one of the following:

  • True
  • False

Explanation

Question 16 of 50

1

Select from the dropdown list to complete the text.

The smaller the pixel size, the ( higher, lower ) the frequency

Explanation

Question 17 of 50

1

The ratio of photons hitting the phosphor and the number that stays in the phosphor is known as what?

Select one of the following:

  • SNR

  • MTF

  • Line spread function

  • Absorption coefficient

Explanation

Question 18 of 50

1

Select from the dropdown list to complete the text.

In radiography, increase mAs, ( increases, decreases ) SNR

Explanation

Question 19 of 50

1

Select from the dropdown lists to complete the text.

In DSA,
Signal ( increases, decreases ) with number of frames
Noise ( increases, decreases ) proportionate to the square root of number of frames

Explanation

Question 20 of 50

1

Select from the dropdown lists to complete the text.

( Smaller, Larger ) parts require higher contrast to be seen
( Larger, Smaller ) parts require lower contrast to be seen

Explanation

Question 21 of 50

1

Select from the dropdown lists to complete the text.

( Lumen, Radiant light ): Total amount of light given off by source relative to the frequencies that the eye is sensitive
( Radiant light, Lumen ): The total amount of light given off by a source

Explanation

Question 22 of 50

1

Cosine law is also known as Lambert's law

Select one of the following:

  • True
  • False

Explanation

Question 23 of 50

1

Luminous intensity is proportional to the viewing angle

Select one of the following:

  • True
  • False

Explanation

Question 24 of 50

1

Before you see the image, the computer does these three things:

Select one or more of the following:

  • Enhances pixel uniformity

  • Reduces noise

  • Improves contrast

  • Improves clarity

Explanation

Question 25 of 50

1

How do you compensate for image lag?

Select one of the following:

  • Increase time between exposures

  • Decrease time between exposures

Explanation

Question 26 of 50

1

Select from the dropdown lists to complete the text.

( Annotation, Image stitching, Image inversion, Shuttering/cropping ): adding text
( Image stitching, Image inversion, Shuttering/cropping, Annotation ): multiple image composite
( Image inversion, Shuttering/cropping, Annotation, Image stitching ): reverse polarity of an image
( Shuttering/cropping, Annotation, Image stitching, Image inversion ): post process "collimation"

Explanation

Question 27 of 50

1

Developed test pattern to visually assess picture detail and contrast for monitors

Select one of the following:

  • SMPTE

  • NEMA

  • VESA

  • AAPM

Explanation

Question 28 of 50

1

Measures contrast and detail

Select one of the following:

  • SMPTE

  • NEMA

  • VESA

  • AAPM

Explanation

Question 29 of 50

1

Developed DICOM standard

Select one of the following:

  • NEMA

  • SMPTE

  • VESA

  • AAPM

Explanation

Question 30 of 50

1

Developed gray scale display function (GSDF) standard

Select one of the following:

  • NEMA

  • SMPTE

  • VESA

  • AAPM

Explanation

Question 31 of 50

1

Developed flat panel evaluation procedures and standards

Select one of the following:

  • VESA

  • NEMA

  • AAPM

  • SMPTE

Explanation

Question 32 of 50

1

Select from the dropdown lists to complete the text.

( TG 18-PX, TG 18-LN, TG 18-QC, TG 18-CX ): resolution uniformity
( TG 18-LN, TG 18-QC, TG 18-CX, TG 18-PX ): luminance (glare, uniformity, reflection, etc.)
( TG 18-QC, TG 18-CX, TG 18-PX, TG 18-LN ): Geometric distortion
( TG 18-CX, TG 18-PX, TG 18-LN, TG 18-QC ): resolution

Explanation

Question 33 of 50

1

Select from the dropdown lists to complete the text.

( Illuminance, Fluorescence, Phosphorescence, Irradiance, Luminescence ): measure of surface illumination
( Fluorescence, Phosphorescence, Irradiance, Luminescence, Illuminance ): immediate light emission and cessation
( Phosphorescence, Irradiance, Luminescence, Illuminance, Fluorescence ): lag in emission and cessation
( Irradiance, Fluorescence, Phosphorescence, Illuminance, Luminescence ): radiant flux/unit area
( Luminescence, Illuminance, Fluorescence, Phosphorescence, Irradiance ): light from cold source

Explanation

Question 34 of 50

1

What determines gray scale?

Select one of the following:

  • Pixel depth

  • Voxels

  • Contrast

  • Density

Explanation

Question 35 of 50

1

Select from the dropdown lists to complete the text.

( Client-server based, Server, Client ): the client provides the software for operation
( Server, Client-server based, Client ): a program application that allows the sharing of data with other programs
( Client, Client-server based, Server ): a program that can accept and use data from a server

Explanation

Question 36 of 50

1

Which of the following has no storage capability at work station?

Select one of the following:

  • client-server based

  • web-based

  • stand-alone

Explanation

Question 37 of 50

1

"Dead in the water" if archive goes down

Select one of the following:

  • client-server based

  • web-based

  • stand-alone

Explanation

Question 38 of 50

1

Only one person can read an image at a time

Select one of the following:

  • client-server based

  • web-based

  • stand-alone

Explanation

Question 39 of 50

1

Remotely hosted electronic system accessed via an internet web browser

Select one of the following:

  • client-server based

  • web-based

  • stand-alone

Explanation

Question 40 of 50

1

Most operations done at a remote server

Select one of the following:

  • client-server based

  • web-based

  • stand-alone

Explanation

Question 41 of 50

1

Ability to customize system is limited

Select one of the following:

  • web-based

  • client-server based

  • stand-alone

Explanation

Question 42 of 50

1

Acquisitions are stored locally until deleted

Select one of the following:

  • stand-alone

  • web-based

  • client-server based

Explanation

Question 43 of 50

1

Not dependent on network for speed

Select one of the following:

  • web-based

  • client-server based

  • stand-alone

Explanation

Question 44 of 50

1

Difficult to hack

Select one of the following:

  • web-based

  • client-server based

  • stand-alone

Explanation

Question 45 of 50

1

one archive and no network

Select one of the following:

  • stand-alone

  • web-based

  • client-server based

Explanation

Question 46 of 50

1

Select from the dropdown lists to complete the text.

( Multiplanar reconstruction (MPR), Minimum intensity projection (MiniIP), Volume rendering technique (VRT), Shaded surface display (SSD), Maximum intensity projection (MIP) ): using data from one plane to produce an image in another plane
( Minimum intensity projection (MiniIP), Multiplanar reconstruction (MPR), Volume rendering technique (VRT), Shaded surface display (SSD), Maximum intensity projection (MiniIP) ): accentuates air filled structures
( Volume rendering technique (VRT), Multiplanar reconstruction (MPR), Minimum intensity projection (MiniIP), Shaded surface display (SSD), Maximum intensity projection (MIP) ): color conversion
( Shaded surface display (SSD), Multiplanar reconstruction (MPR), Minimum intensity projection (MiniIP), Volume rendering technique (VRT), Maximum intensity projection (MIP) ): filtering or windowing
( Maximum intensity projection (MIP), Multiplanar reconstruction (MPR), Minimum intensity projection (MiniIP), Volume rendering technique (VRT), Shaded surface display (SSD) ): accentuates contrast media filled vessels

Explanation

Question 47 of 50

1

Most popular RAID

Select one of the following:

  • Level 0

  • Level 1

  • Level 3

  • Level 4

  • Level 5

Explanation

Question 48 of 50

1

What RAID level is data mirrored?

Select one of the following:

  • Level 0

  • Level 1

  • Level 2

  • Level 3

  • Level 4

  • Level 5

Explanation

Question 49 of 50

1

What RAID level is not used much (cannot handle multiple queries)?

Select one of the following:

  • Level 0

  • Level 1

  • Level 3

  • Level 4

  • Level 5

Explanation

Question 50 of 50

1

What RAID level can handle multiple requests simultaneously?

Select one of the following:

  • Level 0

  • Level 1

  • Level 3

  • Level 4

  • Level 5

Explanation

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