Radiation therapy, Total skin electron beam therapy (TSEBT), achieves a high response rate and is an effective treatment for cutaneous T-cell lymphoma affecting the superficial region. One the most widely used TSEBT techniques consists of six dual fields initially developed at Stanford University. However, deviations occur from the prescription dose up to 40% and the surface dose inhomogeneity as much as 90% in body areas such as the perineum and eyelid.