Source of Support: None, Conflict of Interest: None
Stereotactic radiosugery treatment planning is done in a dedicated planning system. In the present study, an attempt has been made to transfer the radiosugery patient data to a 30 planning system and compare the treatment plans with various parameters. Circular collimators were created in a rectangular field using blocks and this simulated radiosurgical beam delivery system. Twelve patients with diagnosis of acoustic neuromas and meningiomas who were treated with radiosurgery were selected for this study. Conformity index (CI), Homogeneity index (HI), target volume and monitor unit calculations were the indices for comparative analysis. It was observed that most of the parameters analysed yielded results within 2 5% between two planning systems. Though stereotactic localization of the target isocenter is not possible with conventional planning system, there is a feasibility of radiosurgery treatment planning within acceptable limits.