Fig. 4From: Radiotherapy in oncological emergencies: fast-track treatment planningHU-rED calibration curves for different CT scanners from different vendors at our institution (120 kV abdominal protocol): red: Aquilion LB CT (Canon Medical Systems Corp., Otawara, JPN), blue: Discovery 690 PET-CT (GE Healthcare, Chalfont St Giles, GB), black: SOMATOM Definition AS (Siemens Healthineers, Erlangen, GER). Upper graph: HU-response curves and their mean, lower graph: deviations from the mean in absolute numbersBack to article page