In vivo EBT radiochromic film dosimetry of electron beam for Total Skin Electron Therapy (TSET)

Bufacchi, A.; Carosi, A.; Adorante, N.; delle Canne, S.; Malatesta, T.; Capparella, R.; Fragomeni, R.; Bonanni, A.; Leone, M.; Marmiroli, L.; Begnozzi, L.

doi:10.1016/j.ejmp.2007.03.003

« Previous Next »Physica Medica: European Journal of Medical Physics
Volume 23, Issue 2 , Pages 67-72, June 2007

In vivo EBT radiochromic film dosimetry of electron beam for Total Skin Electron Therapy (TSET)

A. Bufacchi
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
- Corresponding author.
A. Carosi
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
N. Adorante
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
S. delle Canne
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
T. Malatesta
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
R. Capparella
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
R. Fragomeni
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy
A. Bonanni
- AFaR U.O.C. Radioterapia, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Rome, Italy
M. Leone
- AFaR U.O.C. Radioterapia, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Rome, Italy
L. Marmiroli
- AFaR U.O.C. Radioterapia, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Rome, Italy
L. Begnozzi
- AFaR U.O.C. Fisica Sanitaria, Ospedale “S. Giovanni Calibita Fatebenefratelli”, Isola Tiberina, 39, 00186 Rome, Italy

Received 25 January 2007; received in revised form 19 March 2007; accepted 22 March 2007. published online 26 May 2007.

Abstract

EBT radiochromic films were used to determine skin-dose maps for patients undergone Total Skin Electron Therapy (TSET). Gafchromic EBT radiochromic film is one of the newest radiation-induced auto-developing photon and electron-beam analysis films available for therapeutic radiation dosimetry in radiotherapy applications. EBT films can be particularly useful in TSET; due to patient morphology, underdosed regions typically occur, and the radiochromic film represents a suitable candidate for monitoring them.

In this study, TSET was applied to treat cutaneous T-cell lymphoma. The technique for TSET was implemented by using an electron beam with a nominal energy of 6MeV. The patient was treated in a standing position using dual angled fields in order to obtain the greatest dose uniformity along the patient's longitudinal axis. The electron beam energy was degraded by a PMMA filter. The in vivo dose distribution was determined through the use of EBT films, as well as of thermoluminescent dosimeters for comparison (TLDs). EBT results showed a reasonable agreement with TLDs data.