Siemens SOMATOM Emotion syngo CT 2007E, Operator'S Manual, Page: 561 / 574

Glossary
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syngo CT 2007E Emotion Operator Manual
02/2008
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Partial volume artifact
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Artifact caused by bone structures which are only partially
included in the slice being scanned.
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Phantom
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Measuring object whose weakening properties is similar to
human; Reference body used for functional and quality assur-
ance tests.
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Pitch factor
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Term applicable only for spiral CT. It is defined as the ratio of
table feed per rotation to the collimated width of the entire
detector. Example: 16*0.75mm collimation, table feed 18 mm/
sec. This gives a volume pitch of 18 / 0.75 =24 and a pitch factor
of 18 / (16*0.75) = 18/12 = 1.5.
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Pixel
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Image element of the two dimensional image.
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R
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RAM
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Fast, non-permanent memory ( R andom A ccess M emory) with
which the computer operates. The size of the available RAM
determines other factors, including the processing speed. Data
are stored long-term on
hard disk , MOD or CD-R .
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Raw data
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Preprocessed measurement data. A raw data file corresponding
to each scan is used to reconstruct the CT image.
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Real Time Display
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Displaying of the measured image synchronous to the scanning
and just after the acquisition of a slice (rotation) is finished.
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