Figure 2From: FDG-PET/CT imaging for staging and radiotherapy treatment planning of head and neck carcinomaAxial FDG-PET/CT image of a patient with nasopharyngeal undifferentiated carcinoma. The computed tomography gross tumor volume (CT-GTV) and the positron emission tomography (PET)-GTV are highlighted with red and light blue contours, respectively. For treatment purposes both findings were taken into account.Back to article page