Exploring the limits of spatial resolution in radiation dose delivery.

摘要: Flexibility and complexity in patient treatment due to advances radiotherapy techniques necessitates a simple method for evaluating spatial resolution capabilities of the dosedelivery device. Our purpose this investigation is evaluate model that describes ability radiation therapy device deliver desired dose distribution. The based on linear systems theory analogous methods used describe degradation imaging systems. A qualitative analysis using presented frequency domains. predict effects geometric conformity volumes evaluated by varying multileaf collimator leaf width magnitude spreading. Dose distributions three clinical shapes, circular shapes diameter one intensity modulated shape are evaluation. We show accurately predicts dependence these parameters. different devices can be quantified model, providing comparing machine characteristics. Also, as sites have requirements may tailor characteristics specific site.