artifact

artifact /ar·ti·fact/ (ahr´ti-fakt?) any artificial (man-made) product; anything not naturally present, but introduced by some external source.

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ar·ti·fact or ar·te·fact (ärt-fkt)

n.

1. A structure or substance not normally present but produced by an external agent or action, such as a structure seen in a microscopic specimen after fixation that is not present in the living tissue.

2. A skin lesion produced or perpetuated by self-inflicted action.

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arti·fac·titious (-fk-tshs), arti·factu·al (-fkch-l) adj.

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artifact,

n 1. anything made by human hands or activities.
2. a product that may develop during an analysis performed to identify the composition of a substance. Mainly a consequence of the conditions of the analysis.

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artifact (är´tfakt),

n a blemish or image in the radiograph that is not present in the roentgen image of the object.

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artifact

a structure or appearance that is not natural, but is due to manipulation (man-made).

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dermatohistopathological artifact

may be due to sampling errors (selection, preparation or technique) or processing of specimens.

radiological artifact

defects in the x-ray film image due to faults in the cassette (screen artifact) or in the film (film artifact).

static artifact

a mark on x-ray film caused by discharge of static electricity.

ultrasound artifact

irregularities produced in the image display. See acoustic shadowing, acoustic enhancement, comet-tail, reverberation.