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Relative Thresholding
ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring
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signal intensity
position
I
bg
I
max
T =
x
% I
max
Relative Threshold
T
, depending on the max. intensity
Commonly used:
x
=42% (40-50%)
Easy to implement
Calibration with phantom measurements possible
Frequently used in clinical routine
PET image
Line profile