Test 7

Descripción

test 7
Korie Hi
Test por Korie Hi, actualizado hace más de 1 año
Korie Hi
Creado por Korie Hi hace casi 8 años
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Resumen del Recurso

Pregunta 1

Pregunta
[blank_start]Absorption coefficient[blank_end]: Determines how far into a material photons of a particular wavelength can penetrate before it is absorbed [blank_start]Detective quantum efficiency (DQE)[blank_end]: The percentage of photons absorbed in a material per given exposure
Respuesta
  • Absorption coefficient
  • Detective quantum efficiency (DQE)
  • Detective quantum efficiency (DQE)
  • Absorption coefficient

Pregunta 2

Pregunta
The higher the DQE, the more [blank_start]efficient[blank_end] the system is
Respuesta
  • efficient
  • inefficient

Pregunta 3

Pregunta
The higher the frequency, the more penetrating the photon is
Respuesta
  • True
  • False

Pregunta 4

Pregunta
The higher the DQE = [blank_start]less[blank_end] radiation you use
Respuesta
  • less
  • more

Pregunta 5

Pregunta
From highest to lowest in efficiency of turning photons into light [blank_start]DR[blank_end] --> [blank_start]CR[blank_end] --> [blank_start]Screen[blank_end]
Respuesta
  • DR
  • CR
  • Screen
  • CR
  • DR
  • Screen
  • Screen
  • DR
  • CR

Pregunta 6

Pregunta
How many shades of gray can be produced by a photon beam?
Respuesta
  • 1,000
  • 10,000
  • 16,000
  • 1,600

Pregunta 7

Pregunta
A DR system can produce how many shades of gray?
Respuesta
  • 1,000
  • 10,000
  • 1,6000
  • 16,000

Pregunta 8

Pregunta
Window width: [blank_start]Controls contrast[blank_end] Window height: [blank_start]Controls density[blank_end]
Respuesta
  • Controls contrast
  • Control density
  • Controls density
  • Controls contrast

Pregunta 9

Pregunta
What does a wide window width do?
Respuesta
  • Decreases contrast
  • Increases contrast

Pregunta 10

Pregunta
What does a high window height do?
Respuesta
  • Image becomes darker
  • Image becomes lighter

Pregunta 11

Pregunta
[blank_start]Contrast resolution[blank_end]: Visibility of detail [blank_start]Spatial resolution[blank_end]: Clarity, how clear a part it
Respuesta
  • Contrast resolution
  • Spatial resolution
  • Spatial resolution
  • Contrast resolution

Pregunta 12

Pregunta
[blank_start]Spatial resolution[blank_end]: measured by MTF [blank_start]Contrast resolution[blank_end]: measured by SNR
Respuesta
  • Spatial resolution
  • Contrast resolution
  • Contrast resolution
  • Spatial resolution

Pregunta 13

Pregunta
[blank_start]Amplitude[blank_end] is how much energy a signal has
Respuesta
  • Amplitude
  • Frequency

Pregunta 14

Pregunta
As parts get smaller, blur [blank_start]increases[blank_end]
Respuesta
  • increases
  • decreases

Pregunta 15

Pregunta
You can image objects smaller than the pixel size
Respuesta
  • True
  • False

Pregunta 16

Pregunta
The smaller the pixel size, the [blank_start]higher[blank_end] the frequency
Respuesta
  • higher
  • lower

Pregunta 17

Pregunta
The ratio of photons hitting the phosphor and the number that stays in the phosphor is known as what?
Respuesta
  • SNR
  • MTF
  • Line spread function
  • Absorption coefficient

Pregunta 18

Pregunta
In radiography, increase mAs, [blank_start]increases[blank_end] SNR
Respuesta
  • increases
  • decreases

Pregunta 19

Pregunta
In DSA, Signal [blank_start]increases[blank_end] with number of frames Noise [blank_start]increases[blank_end] proportionate to the square root of number of frames
Respuesta
  • increases
  • decreases
  • increases
  • decreases

Pregunta 20

Pregunta
[blank_start]Smaller[blank_end] parts require higher contrast to be seen [blank_start]Larger[blank_end] parts require lower contrast to be seen
Respuesta
  • Smaller
  • Larger
  • Larger
  • Smaller

Pregunta 21

Pregunta
[blank_start]Lumen[blank_end]: Total amount of light given off by source relative to the frequencies that the eye is sensitive [blank_start]Radiant light[blank_end]: The total amount of light given off by a source
Respuesta
  • Lumen
  • Radiant light
  • Radiant light
  • Lumen

Pregunta 22

Pregunta
Cosine law is also known as Lambert's law
Respuesta
  • True
  • False

Pregunta 23

Pregunta
Luminous intensity is proportional to the viewing angle
Respuesta
  • True
  • False

Pregunta 24

Pregunta
Before you see the image, the computer does these three things:
Respuesta
  • Enhances pixel uniformity
  • Reduces noise
  • Improves contrast
  • Improves clarity

Pregunta 25

Pregunta
How do you compensate for image lag?
Respuesta
  • Increase time between exposures
  • Decrease time between exposures

Pregunta 26

Pregunta
[blank_start]Annotation[blank_end]: adding text [blank_start]Image stitching[blank_end]: multiple image composite [blank_start]Image inversion[blank_end]: reverse polarity of an image [blank_start]Shuttering/cropping[blank_end]: post process "collimation"
Respuesta
  • Annotation
  • Image stitching
  • Image inversion
  • Shuttering/cropping
  • Image stitching
  • Image inversion
  • Shuttering/cropping
  • Annotation
  • Image inversion
  • Shuttering/cropping
  • Annotation
  • Image stitching
  • Shuttering/cropping
  • Annotation
  • Image stitching
  • Image inversion

Pregunta 27

Pregunta
Developed test pattern to visually assess picture detail and contrast for monitors
Respuesta
  • SMPTE
  • NEMA
  • VESA
  • AAPM

Pregunta 28

Pregunta
Measures contrast and detail
Respuesta
  • SMPTE
  • NEMA
  • VESA
  • AAPM

Pregunta 29

Pregunta
Developed DICOM standard
Respuesta
  • NEMA
  • SMPTE
  • VESA
  • AAPM

Pregunta 30

Pregunta
Developed gray scale display function (GSDF) standard
Respuesta
  • NEMA
  • SMPTE
  • VESA
  • AAPM

Pregunta 31

Pregunta
Developed flat panel evaluation procedures and standards
Respuesta
  • VESA
  • NEMA
  • AAPM
  • SMPTE

Pregunta 32

Pregunta
[blank_start]TG 18-PX[blank_end]: resolution uniformity [blank_start]TG 18-LN[blank_end]: luminance (glare, uniformity, reflection, etc.) [blank_start]TG 18-QC[blank_end]: Geometric distortion [blank_start]TG 18-CX[blank_end]: resolution
Respuesta
  • TG 18-PX
  • TG 18-LN
  • TG 18-QC
  • TG 18-CX
  • TG 18-LN
  • TG 18-QC
  • TG 18-CX
  • TG 18-PX
  • TG 18-QC
  • TG 18-CX
  • TG 18-PX
  • TG 18-LN
  • TG 18-CX
  • TG 18-PX
  • TG 18-LN
  • TG 18-QC

Pregunta 33

Pregunta
[blank_start]Illuminance[blank_end]: measure of surface illumination [blank_start]Fluorescence[blank_end]: immediate light emission and cessation [blank_start]Phosphorescence[blank_end]: lag in emission and cessation [blank_start]Irradiance[blank_end]: radiant flux/unit area [blank_start]Luminescence[blank_end]: light from cold source
Respuesta
  • Illuminance
  • Fluorescence
  • Phosphorescence
  • Irradiance
  • Luminescence
  • Fluorescence
  • Phosphorescence
  • Irradiance
  • Luminescence
  • Illuminance
  • Phosphorescence
  • Irradiance
  • Luminescence
  • Illuminance
  • Fluorescence
  • Irradiance
  • Fluorescence
  • Phosphorescence
  • Illuminance
  • Luminescence
  • Luminescence
  • Illuminance
  • Fluorescence
  • Phosphorescence
  • Irradiance

Pregunta 34

Pregunta
What determines gray scale?
Respuesta
  • Pixel depth
  • Voxels
  • Contrast
  • Density

Pregunta 35

Pregunta
[blank_start]Client-server based[blank_end]: the client provides the software for operation [blank_start]Server[blank_end]: a program application that allows the sharing of data with other programs [blank_start]Client[blank_end]: a program that can accept and use data from a server
Respuesta
  • Client-server based
  • Server
  • Client
  • Server
  • Client-server based
  • Client
  • Client
  • Client-server based
  • Server

Pregunta 36

Pregunta
Which of the following has no storage capability at work station?
Respuesta
  • client-server based
  • web-based
  • stand-alone

Pregunta 37

Pregunta
"Dead in the water" if archive goes down
Respuesta
  • client-server based
  • web-based
  • stand-alone

Pregunta 38

Pregunta
Only one person can read an image at a time
Respuesta
  • client-server based
  • web-based
  • stand-alone

Pregunta 39

Pregunta
Remotely hosted electronic system accessed via an internet web browser
Respuesta
  • client-server based
  • web-based
  • stand-alone

Pregunta 40

Pregunta
Most operations done at a remote server
Respuesta
  • client-server based
  • web-based
  • stand-alone

Pregunta 41

Pregunta
Ability to customize system is limited
Respuesta
  • web-based
  • client-server based
  • stand-alone

Pregunta 42

Pregunta
Acquisitions are stored locally until deleted
Respuesta
  • stand-alone
  • web-based
  • client-server based

Pregunta 43

Pregunta
Not dependent on network for speed
Respuesta
  • web-based
  • client-server based
  • stand-alone

Pregunta 44

Pregunta
Difficult to hack
Respuesta
  • web-based
  • client-server based
  • stand-alone

Pregunta 45

Pregunta
one archive and no network
Respuesta
  • stand-alone
  • web-based
  • client-server based

Pregunta 46

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

Pregunta 47

Pregunta
Most popular RAID
Respuesta
  • Level 0
  • Level 1
  • Level 3
  • Level 4
  • Level 5

Pregunta 48

Pregunta
What RAID level is data mirrored?
Respuesta
  • Level 0
  • Level 1
  • Level 2
  • Level 3
  • Level 4
  • Level 5

Pregunta 49

Pregunta
What RAID level is not used much (cannot handle multiple queries)?
Respuesta
  • Level 0
  • Level 1
  • Level 3
  • Level 4
  • Level 5

Pregunta 50

Pregunta
What RAID level can handle multiple requests simultaneously?
Respuesta
  • Level 0
  • Level 1
  • Level 3
  • Level 4
  • Level 5
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