[Computer-assisted irradiation planning in whole-body irradiation]

Using a commercial system designed for external beam radiation treatment planning a simple method is described for calculating dose distribution in total body irradiation. Scaling factors are applied to keep the range of all distances within the limits preset for the routine use of the planning system. As an example the validity of the method is tested in the lung region which due to dose inhomogeneities is especially critical to an accurate dose determination. Comparing dose calculation and phantom measurements reasonable agreement is obtained.