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syngo CT 2007E
Emotion Operator Manual
02/2008
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Information about Personal Safety
Safety
A.2-32
Measurement related artifacts
A.2
The most significant measurement related artifacts are the fol-
lowing:
A.2
❏
Partial volume effects
❏
Beam hardening
❏
Metal artifacts
❏
Motion artifacts
Partial volume effects
A.2
Thick slices are often preferred instead of thin slices. This helps
to increase signal to noise ratio and to limit the examination
time by reducing the number of slices. However, this may result
in partial volume effects. These are caused by high density tis-
sues (such as a bone) or objects (such as pacemakers) project-
ing only partly into the slice plane. One such well-known arti-
fact is the so-called Hounsfield bar between the petrous bones.
Other regions of the skull are also problematic with regard to
partial volume effects which are visible as dark streaks. Addi-
tional correction and / or special parameter settings (head
modes) help to minimize these effects.
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✧
To avoid partial volume effects use thinner slices.
Summary of Contents for SOMATOM Emotion syngo CT 2007E
Page 4: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 ii ...
Page 8: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 vi ...
Page 240: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Console System Description B 5 24 ...
Page 264: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 System Handling C 2 ...
Page 340: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Function Tests Operation D 2 6 ...
Page 426: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Maintenance E 2 ...
Page 442: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Quality Assurance F 2 ...
Page 526: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Camera Test Quality Assurance F 6 6 ...
Page 536: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Technical Specifications G 2 ...
Page 540: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Release Information J 2 ...
Page 542: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Safety Instructions K 2 ...
Page 544: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Forms L 2 ...
Page 546: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 DIP Report M 2 ...
Page 548: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Location of labels N 2 ...
Page 566: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Glossary O 18 ...
Page 574: ...0 0 syngo CT 2007E Emotion Operator Manual 02 2008 0 0 Index P 8 ...