Using the treatment planning system

Using the treatment planning system, four verification plans, namely, V1–V4, with different phantoms were designed. Three 2D isocenter plane verification plans and one 3D stereoscopic verification plan were designed. In V1, all field angles were converted to 0°, and PTW 729 RW3 solid water was used. In V2, all field angles were converted to 0°, and the PTW Octavius4D phantom was used. The actual angle and the Octavius4D phantom were used to obtain one-plane verification (V3) and stereoscopic verification (V4).zon the RW3 solid water module image composed of PTW 729 ionization chamber matrix plus 4.2cm solid water + ionization chamber matrix +5cm solid water.