Molecular Imaging 2017

Gradient-based PET segmentation improves target volume definition in NSCLC

Wanet M et al. Radiother Oncol 2011;98:117-25. • N=10 NSCLC patients

• GTV delineation on CT ± PET

Comparison with surgical specimen PET yields more robust delineation in poorly defined tumors

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• Gradient based seg. outper- formed threshold method in terms of accuracy and robustness