Comparison of time difference mu (monitor unit) between 2d conventional radiotherapy treatment plan and 3d conformal radiotherapy treatment plan in linear accelerator for patient treatment

In this study, 100 cancer patients treatment plans were determined by CMS XIO brand treatment planning system with Siemens Oncor brand linear accelerator features in accordance with 3 dimensional conformal radiotherapy treatment planning and calculated treatment duration MU (monitor unit), then patients were treated in Atatürk Göğüs Hastalıkları ve Göğüs Cerrahisi Eğitim ve Araştırma Hastanesi Radiotherapy Department.Also planning two-dimensional conventional radiotherapy treatment planning and in the event the same fields, the same dose in the amount given with the heterogeneity is closed due to repeated treatment duration MU (monitor unit) calculation was conducted in two planning between one fraction of the differences were identified and as a percentage compared. The difference reached the highest for treatment of 7 patients with DVH (Dose Volume Histogram) charts were obtained, the target tumor and critical organs, the minimum, average and maximum dose they studied.According to two-dimensional conventional treatment planning techniques 10 patients of 100 patients take 3% up to 5% less dose than patients should be given, still 41 patients were taken near 3% low doses, however, 16 patients take approximately 5% more doses than the dose should be given to the patient, again 22 patients take 5% up to 10% more doses than the dose should be given and 11 patients were taken higher doses 10% up to 20% was determined.As a result of this situation which patients take low doses not being cured, and the probability of relapse, patients receiving high doses of the temporary or permanent damage will be able to occur.This is because the electron density of tissue in the body is different from each other, heterogeneity, all the electron density off accepted water equivalent was taken as a result of differences were obtained for comparison.Three-dimensional conformal radiotherapy with the results obtained with the conventional technique of two-dimensional radiotherapy treatment techniques in obtaining accurate results compared to has been shown to be superior.