Evaluation of the lower limit of accuracy in a virtual simulation system

The assessment of tumor margins in Radiotherapy is linked to the quality and accuracy of treatment. The determination of a reliable PTV is determined by multiple components, such as determining the GTV (or CTV), their physiological movements and reproducibility of placement in the diagnosis and treatment units, among others. Likewise, separate the various variables is a complex process dependent largely on the diagnostic units, locking systems and tumor location. Our intention is to obtain a threshold for determining treatment volumes based on these parameters.