Quiz 19/20 (Bush) Flashcards

1
Q

Image perception is a scientific term for what we call visual ______________.

A

sensitivity

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2
Q

The decreasing luminous intensity with increasing distance from the source of light follows _____________________.

A

the inverse square law

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3
Q

The ambient light levels in the reading area should be ______________.

A

near darkness

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4
Q

The special demands of digital imaging are ________________ and _____________.

A

postprocessing; numerical analysis

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5
Q

A principal advantage of digital imaging over analog imaging is ____________________.

A

image brightness

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6
Q

Light incident on the eye must first pass through the _________________.

A

cornea

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7
Q

When light arrives at the retina, it is detected by the __________________.

A

rods and cones

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8
Q

Photopic vision is used for ______________________.

A

daylight vision

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9
Q

The interpretation of a digital medical image by a radiologist is a two-step process; _________________ followed by ______________.

A

global impression; visual search

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10
Q

The process of matching any worker to the work environment to maximize efficiency is ______.

A

ergonomics

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11
Q

Digital radiography is superior to analog radiography because of __________________.

A

image brightness

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12
Q

T or F: Visual accommodation is a term related to changes we make voluntarily and involuntarily in order to improve our image perception.

A

true

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13
Q

SMPTE stands for the _____________________________________.

A

Society of Motion Picture and Television Engineers

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14
Q

A standard pattern made to measure the resolution of digital display systems is called the _______________________.

A

SMPTE pattern

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15
Q

Medical images are transferred using the ____________ standard.

A

DICOM

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16
Q

The standard for Digital Imaging and Communication was developed by a committee of the ______________.

A

ACR and NEMA

17
Q

The quality control standard for flat panel displays was released by _______ in 1998.

A

VESA

18
Q

There are _______ types of photometers commonly used.

A

two

19
Q

A photometer is a _____________________.

A

luminescence meter

20
Q

T or F: Daily quality control testing is done by the medical physicist.

A

false