Mantle treatment. Absorbed dose measurements in patients compared with dose planning

In vivo dose measurements were performed in the hypopharnyx-oesophagus for 60 adult patients receiving mantle treatment with 60Co. The measurements of absorbed dose in more than 1 600 points were analysed and compared with dose plans for the same patients. For the technique used the mean difference between in vivo measured and planned absorbed dose is within +0.4 and -1.3 per cent with a standard error of the mean of 0.4 per cent.