SPECIFIED PLANNING METHOD OF THE INTRAOCULAR TUMORS PROTON THERAPY
Proton therapy of malignant newgrowths is carried out at the synchrotron of the Institute of Theoretical and Experimental Physics (ITEP). The theses are presented which are accepted in dose planning for uveal melanoma of eye by means of current dose program EyePlan. Many of these malignant tumors are inaccessible for the contact radiation therapy due to their size or proximity to the posterior pole of eyeball. Patients with the intraocular tumors are treated by the physicians of the Helmholtz Institute of Eye Diseases. The possibilities of an improvement of the treatment planning quality are considered, with a more accurate definition of the eye anatomic model and the larger amount of the preliminary topometry data. A phantom was developed that imitated a pair of eyes. It was used for the gear preparations and the personal training at a model that is able to check the treatment scenario and preparedness of the staff without patients. On the basis of the patients eye topometry before the simulation a preliminary computer treatment plan is worked out. It is taken into account the convergence of optical and visual axes of eye. Thus a good coincidence of portal films with the plan is obtained and the number of preliminary simulations is reduced.