Comparative dosimetry study of three UK centres implementing total skin electron treatment through external audit

• DOI: 10.1259/bjr.20140723
• Publication Date: 2015-03-11T16:29:18Z
• Authors: S Misson-Yates; R Gonzalez; M McGovern; A Greener
• Keywords: Flatness (cosmology)

This article describes the external audit measurements conducted in two UK centres implementing total skin electron beam therapy (TSEBT) and results obtained.Measurements of output, energy, flatness symmetry at a standard distance (95 or 100 cm SSD) were performed using parallel plate chamber solid water. Similarly, output energy also treatment plane for single dual fields. Clinical simulations carried out thermoluminescent dosemeters (TLDs) Gafchromic® film (International Specialty Products, Wayne, NJ) on an anthropomorphic phantom.Extended confirmed that local values dosimetry Centres A B within 2% outputs 1-mm agreement expected depth which dose is 50% maximum depth-dose curve water (R50,D) value. simulation TLDs) showed -1.6% -6.7% compared with mean trunk each centre, respectively, variation 10% (±1 deviation) across trunk. The delivery technique audited centre complies European Organisation Research Treatment Cancer recommendations.This methodology has proven to be successful way confirm dosimetric parameters TSEBT treatments both could serve as basis template used by other groups.TSEBT audits are not established owing limited number carrying technique. prior their clinical implementation.