Siemens SOMATOM Emotion syngo CT 2007E Operator's Manual page 561

Partial volume artifact
Phantom
Pitch factor
Pixel
RAM
Raw data
Real Time Display
syngo CT 2007E
02/2008
Artifact caused by bone structures which are only partially
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included in the slice being scanned.
Measuring object whose weakening properties is similar to
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human; Reference body used for functional and quality assur-
ance tests.
Term applicable only for spiral CT. It is defined as the ratio of
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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.
Image element of the two dimensional image.
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R
Fast, non-permanent memory (Random Access Memory) with
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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.
Preprocessed measurement data. A raw data file corresponding
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to each scan is used to reconstruct the CT image.
Displaying of the measured image synchronous to the scanning
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and just after the acquisition of a slice (rotation) is finished.
Glossary
Emotion Operator Manual
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