Figure 2From: Re-irradiation of spinal column metastases by IMRT: impact of setup errors on the dose distributionHot spots inside the spinal canal. Sagittal icocentric slice for patient 1 with (left) and without (right) CBCT table setup correction. Hotspots (dose over the allowed tolerance dose of 18 Gy) inside the spinal canal are displayed in red. CTV is marked in purple and spinal cord in orange.Back to article page