Dosimetry of translational technique for total body irradiation with electrons in Alderson anthropomorphic phantom, for the treatment of mycosis fungoides

Abstract

Total skin electron irradiation (tsei) is one of the most widely used techniques in the treatment of mycosis fungoides (mf). The objective of this work is to carry out the dosimetric characterization of the translational method using a mobile platform at constant speed for tsei, being a longitudinal prospective study design, making use of descriptive statistics with a quantitative approach. The dosimetric and geometric characteristics were established according to the Varian 21 iX linear accelerator for clinical use, treatment method and conditions of the translational platform (tp) with two degrees of freedom (speed and height), using a 1 cm thick lucite, thus degrading the energy and obtaining the maximum dose at a depth of 4.8 mm and a photon contamination of 0.74%, which are within the parameters established by the American Association of Physicists in Medicine (aapm) in report No. 23.1 In Mexico, the translational technique with tsei has not been implemented for mf cancer procedures, and due to the physical limitations of the patients, there is no homogeneous dose distribution on the skin surface with the Stanford and rotational technique

Keywords

• high dose rate
• absorbed dose
• lucite