Phantommessungen zur Bewegungsbestrahlung im Halsgebiet

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Abstract
Comparative measurements on 2 neck phantoms of calcined magnesium paraffin (diameter 11.7 and 13.5 cm, respectively) during irradiation of the larynx showed that a favorable dose distribution to the cervical region was obtained with pendular irradiation as well as with oscillatory convergent irradiation. Some important observations on the adjustment of the pivoting point and the depth of convergency were made and found to deviate from operation data. The most favorable dose distribution both for pendular irradiation and oscillatory convergent irradiation was obtained with an angular rotation of + 140[degree]. For moving field irradiation, filtration with 0.5 mm Cu gave a better relative depth dose than that obtained with 0.2 mm Cu.

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