[Optimizing target volume assessment in irradiation of intraocular melanomas with ruthenium applicators]. / Optimierung der Zielvolumserfassung bei der Bestrahlung intraokularer Melanome mittels Rutheniumapplikatoren.

ABSTRACT

Radioactive applicators have been used for conservative therapy of melanomas in the vicinity of the nervus opticus and of melanomas of the ciliary body for a few years. The aim of optimal radiotherapy is to destroy all tumor cells and to protect the optic nerve and macula. Therefore, we calculated the dose distributions and isodoses for ruthenium applicators. Isodoses show underdosage or overdosage in the tumor area. We also present a calculation model with which it is possible to simulate selective shielding of activated parts of the applicator.