Study and development of two innovative electron beam imaging systems for dosimetry in IORT (Intra Operative Radiation Therapy)

Rosa Brancaccio, Matteo Bettuzzi, Franco Casali, Samantha Cornacchia, Maria Pia Morigi, Alessandro Pasini, Davide Romani, Concetta Ronsivalle, Antonino Tata

Research output: Contribution to conferencePaper

Abstract

IntraOperative Radiation Therapy (IORT) is a technique based on delivery of a high dose of ionising radiation to the cancer tissue, after tumour ablation, during surgery. The major stumbling block to the large-scale application of this radiotherapy technique is the transfer of the patient, with an open wound, form the operating room to the radiation therapy bunker, with the consequent organisational problems and the increased risk of infection. To overcome these limitations, Novac7, a new linear accelerator expressly conceived to perform in the operating room, has been developed. It can deliver electron beams of different energies with a high dose rate (up to 20 Gy/min). These peculiar characteristics give rise to some complications with classical dosimetric techniques. In the framework of a research contract between ENEA and the Physics Department of the University of Bologna, Italy, two original systems have been developed to study and visualise the Novac7 electron beam in real time. The first system is composed by an electron-light converter, a cooled CCD camera and a computer with dedicated software. The second dosimeter is based on a grid of scintillating optical fibres coupled with photodiodes. The achieved results prove that the first system is able to obtain two dimensional measurements of dose distributions in real time and it is a good system for quality controls. The second system has the same capabilities of the first one, but moreover it has the possibility to monitor the delivered beam impulse by impulse. The conclusions confirm the capability of both instruments to overcome problems encountered with classic dosimetry, showing that the results obtained strongly encourage the continuation of this research. © 2004 IEEE.

Conference

Conference2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors
CountryItaly
Period1/1/04 → …

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All Science Journal Classification (ASJC) codes

  • Radiation
  • Nuclear and High Energy Physics
  • Radiology Nuclear Medicine and imaging

Cite this

Brancaccio, R., Bettuzzi, M., Casali, F., Cornacchia, S., Morigi, M. P., Pasini, A., ... Tata, A. (2004). Study and development of two innovative electron beam imaging systems for dosimetry in IORT (Intra Operative Radiation Therapy). Paper presented at 2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors, Italy.