Fahimi Monzari S, Geraily G, Aghili M, Toolee H. Evaluation of Dose Distribution in Optimized Stanford Total Skin Electron Therapy (TSET) Technique in Rando Anthropomorphic Phantom using EBT3 Gafchromatic Films.
J Biomed Phys Eng 2021;
11:425-434. [PMID:
34458190 PMCID:
PMC8385220 DOI:
10.31661/jbpe.v0i0.1035]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 10/24/2018] [Indexed: 12/05/2022]
Abstract
Background:
The Total Skin Electron Therapy (TSET) targets the whole of skin using 6 to 10 MeV electrons in large field size and large Source to Surface Distance (SSD).
Treatment in sleeping position leads to a better distribution of dose and patient comfort.
Objective:
This study aims to investigate the uniformity of absorbed dose in the sleeping Stanford technique on the Rando phantom using dosimetry.
Material and Methods:
It is an experimental study which was performed using 6 MeV electron irradiation produced by Varian accelerator in the AP and PA positions with gantry angles of 318/3, 0 and 41/5 degrees,
and RAO, LAO, RPO and LPO with 291/4 gantry angle and 45 degrees of collimator angle in the sleeping position.
Results:
The results show that the dose uniformity achieved in this technique is in the range of (100 ± 25%) and, the dose accuracy was 6%.
Conclusion:
Total Skin Electron Therapy (TSET) technique in sleeping position is very suitable for elderly and disabled patients, and meets the required dose uniformity.
Furthermore, the use of a flattening filter is recommended for the more dose distribution uniformity.
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