Fig. 3.

Phantoms with their supports. (a) The water phantom rests on four variations of the simplified support. The head phantom lies on (b) the clinical headrest and (c) the custom‐made headrest.

Phantoms with their supports. (a) The water phantom rests on four variations of the simplified support. The head phantom lies on (b) the clinical headrest and (c) the custom‐made headrest.