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approaches
ESTRO Teaching Course Advanced Imaging: PET – Reconstruction, Contouring
36
A
B
C
Contours created with different segmentation algorithms:
manual delineation
(21.8 ccm)
,
absolute threshold SUV=2.5 (35.0 ccm),
relative threshold 42% of
maximum PET intensity (11.5 ccm),
adaptive thresholding (10.6 ccm),
source-to-
background based algorithm of Schaefer
et al
(13.0 ccm)