PET/CT for radiotherapy planning of head-âÂÂneck cancer
PET/CT for radiotherapy planning of head-âÂÂneck cancer
PET/CT for radiotherapy planning of head-âÂÂneck cancer
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DelineaAon methods<br />
Available strategies<br />
! Visual / manual<br />
! SUV<br />
! % <strong>of</strong> tumor ac3vity<br />
! % <strong>of</strong> background ac3vity<br />
! Ra3o tumor -‐ background<br />
! Advanced algorithms<br />
This choice is not trivial !<br />
! Resul3ng volume depends heavily on the method<br />
! There is insufficient valida3on <strong>for</strong> all methods<br />
! At least a fixed SUV threshold is not suitable<br />
! A “best method” is currently not iden3fiable<br />
Schinagl et al., IJRBOP 2007<br />
52<br />
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