Medicina nuclear y radioterapia

Dosimetric Comparison of SBRT Plans in Cyberknife and Helical Tomotherapy in Non-Small Cell Lung Cancers

Abstract

Tugce Tekirdag, Adem Sengul, Onur Buyukok, Asl?han Uzun and Zemzem Uyanik

It was aimed to make a dosimetric comparison by delivering the plans of patients treated with the robotic radiosurgery Cyberknife device using the density-adjusted radiotherapy (IMRT) technique in the treatment of non-small cell lung cancers (NSCLC) to the Helical Tomotherapy device. In cases where stereotactic body radiotherapy (SBRT) treatment cannot be performed in Cyberknife device, it is aimed to offer alternative treatment methods for NSCLC patients with the same cases.

In this study, the plans of 10 patients were evaluated retrospectively. For each of the 2 different techniques (Planned Target Volume), the minimum, maximum and average doses of PTV; homogeneity index and conformity index; the doses taken by the planned risky organs; the data of 20% and 50% isodoses and the statistical analysis of the values taken by the (monitor unit) were compared using the Social Sciences Statistical Package (SPSS) data analysis system. In the treatment of lung cancer patients, it was aimed to protect the critical organs at the maximum level; As Low as Reasonably Achievable principle optimization was achieved by irradiating the lesion at the destructive level.