Figure 5: Treatment planning CT scan showing the dose to the reirradiated spinal cord at the level of the 8. thoracic vertebra (total dose to the ICRU reference point 30 Gy, dose per fraction 3 Gy). The maximum dose to the spinal cord equalled 98% of the reference dose. The lowest dose level displayed here is the 50% isodose. The treatment planning system was Eclipse by Varian Inc.