[P193] Improved method for in vivo dosimetry in pelvic intra-operative radiation therapy using Gafchromic films and customized digitization templates

In vivo measurements using three 1.5  × 1.5 cm2 pieces of Gafchromic EBT3 film are part of our routine quality assurance during electron intra-operative radiation therapy (IOERT) for rectal cancer. The complexity of the pelvic irradiation geometry makes it desirable to increase the number of film samples, to ensure complete cove rage of the irradiated length. The positioning of small films for digitization is time consuming and challenging, because of the need to minimize undesirable scanning artifacts.

Source: Physica Medica: European Journal of Medical Physics - August 1, 2018 Category: General Medicine Authors: Joana Santos, Sofia Silva, Sandra Sarmento Source Type: research