Figure 4.

Percent depth dose measurements (a) comparing measurements performed in water and Solid Water using parallel plate chambers; (b) comparing measurements performed with parallel plate chambers, a scanning ion chamber, and a stereotactic diode. Setup geometry was $10\times 10\hspace{0.17em}{\text{cm}}^2$ field size, 90 cm SSD, and 6 MV photons. Depth dose data are normalized to 10 cm depth.