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SPECT CT Reconstructietechnieken
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SPECT CT Reconstructietechnieken
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vTECH 05-003 SPECT/CT Reconstructietechniekeneen voorbereiding op het college “SPECT/CT Reconstructietechnieken”.
Leerdoelen
De student kan:
· De verschillen en overeenkomsten tussen CT en SPECT benoemen.
verschillen= Ct heeft een stralingsbron buiten het lichaam en SPECT heeft een
stralingsbron in het lichaam. CT =>Filtered backprojection (filtering tijdens de terugprojectie)
-Edge enhancement
-Smoothing
SPECT Butterworth (filtering op het beeld)
-Cut-off frequency
-‘Order’
overeenkomsten= heeft allebei een rij detectoren die de straling meet
· Uitleggen hoe reconstructie op basis van terugprojectie werkt.
Het beeld wordt gereconstrueerd door de projecties terug te smeren
· Uitleggen hoe iteratieve reconstructie werkt.
· Uitleggen hoe gefilterde terugprojectie werkt.
· Uitleggen wat het effect is van cut-off-frequency- en de order van het
butteworthfilter op de beeldkwaliteit is.
Cut-off frequency ( = afsnij-frequentie)
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