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syngo CT 2007E Emotion Operator Manual
02/2008
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Glossary
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CT
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Computed Tomography.
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CTDI 100
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CTDose Index, calculated as absorbed dose to air according to
IEC 60601-2-44. The Integral of the dose profile is calculated
along a line perpendicular to the tomographic plane (from -50
mm to +50 mm).
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CTDI vol
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The CTDose Index volume (IEC 60601-2-44) is the approxima-
tion of the average dose over a single slice in the standard head
or body CT dosimetry phantom, expressed in terms of absorbed
dose to air (mGy).
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CTDI
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CTDose Index, calculated as absorbed dose to PMMA (lucite)
according to 21CFR, § 1020.33. The Integral of the dose profile
is calculated along a line perpendicular to the tomographic
plane (from -7T to +7T, T is the nominal tomographic slice thick-
ness).
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D
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Density determination
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Quantitative evaluation of the CT values in a CT image.
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Detector array
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System of detectors for acquiring radiation intensities.
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