Molecular Imaging 2017

Take home messages • PET based target volume contouring is a open field of research, where • human brain and manual interaction is needed and desirable and • consultation of NM specialist/radiologist improves contouring accuracy

• autocontouring methods - may reduce workload - may improve inter-observer-variability - may need calibration - do bear inter-method variability

• however, e.g. 4D-contouring will require automatic methods

• institutional standardisation of process of PET based contouring should be established

• CAVE uncritical use of autosegmentation tools provided by manufacturer of PET or PS !