On the role of polymer gels in the dosimetry of small photon fields used in radiotherapy

摘要

Volume averaging problems, set-up errors and detector perturbation effects are the main problems present in small photon field dosimetry. Polymer gel dosimetry characteristics allow the elimination of these problems. Polymer gels can and should become a useful tool in clinical practice for small field data acquisition and periodic quality assurance in modern radiotherapy techniques where small photon fields are used.