Facultatea de Fizică
Universitatea "Al.I.Cuza" Iaşi
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| Titlu: Monte Carlo Commissioning of a Linear Accelerator for Intraoperative Radiation Therapy |
| Autori: Ion Creanga, Dan Mihailescu |
| Afiliere: Faculty of Physics,“Alexandru Ioan Cuza” University, Iasi, Romania |
| Abstract: Intraoperative Radiation Therapy (IORT) is a treatment modality of cancer which involves the direct delivery of a high-level radiation dose (~ 20 Gy) to the residual tumour or to the tumour bed while the target area is exposed during
surgery, after the removal of a neoplastic mass. IORT is currently performed using 9–12 MeV electron beams produced by conventional electron accelerators adapted for IORT or by mobile dedicated accelerators directly co-located in the operating room. The IORT accelerators are equipped with long cylindrical applicators. Due to their length, the IORT applicators have a
major contribution to the energy degradation, as well as to the spatial and angular distributions of the electrons at the phantom/patient surface. Most of these physical characteristics of the IORT electron beams are difficult or even impossible to
be measured with a reasonable accuracy. The alternative consists in the use of the Monte Carlo method to determine, accurate enough, all the physical characteristics necessary for the commissioning of a linear accelerator for radiation therapy. This technique, usually called Monte Carlo commissioning, is described in our work for a linear accelerator for Intraoperative Radiation Therapy. |
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