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Rad Technique > Digital Image Artifacts > Flashcards

Digital Image Artifacts Flashcards

0
Q

Inage receptors artifact

A

Hardware induced artifacts

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1
Q

False visual features

A

Artifacts

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2
Q

Image processing artifacts

A

Software induced artifacts

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3
Q

Errors of the technologist

A

Image aquisition artifacts

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4
Q

Exposure on the same plate

A

Double exposure

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5
Q

Very high exposure setting

A

Inappropriate exposure factors (overexposure)

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6
Q

Very low exposure

A

Quantum mottle / noise

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7
Q

Use low grid

A

Moire pattern

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8
Q

Power failure

A

Missing lines / pixels

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9
Q

Failure of data cables

A

Alternating radiopaque and radiolucent lines

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10
Q

Implementation of edge enhancement

A

Uberschwinger artifact (Halo effect)

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11
Q

Poor basic knowledge of cassettes

A

Exposure through back of cassette

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12
Q

Cassette placed in vicinity of scattered radiation

A

Scatter radiation

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13
Q

Mishandling of image plates

A

Kink marks

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14
Q

Back scattered radiation entering imaging plates

A

Light bulb effect

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15
Q

Damaged imaging plates

A

Cracks

16
Q

Dust particles

A

Focal radiopacies

17
Q

Malfunction of rollers

A

Disparity artfacts

18
Q

Mechanical damaging of plates

A

Focal linear radiopacies

19
Q

Dust over plate during transport

A

Multiple localized radiopacies

20
Q

Slipping of feed rollers

A

Half read image

21
Q

Dirt over light guide

A

Plate reader artifact - linear radiopaque line

22
Q

Wrong body part selection/ retention of signal image

A

Ghost image

23
Q

Distortion of image

A

Image compositing

24
Q

Signal from one exposure lingering into the readout of subsequent exposure

A

Detector image lag and ghosting

25
Q

Scattered radiation incident

A

Backscatter

Rad Technique (13 decks)

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