J Med Phys Close
 

Figure 3: Fluence distributions for radiation emitted from the flattening filter and flattening filter free linacs in 5 cm×5 cm, 10 cm×10 cm, 20 cm×20 cm, and 30 cm×30 cm fields. (a) Photon fluence and (b) electron fluence.

Figure 3: Fluence distributions for radiation emitted from the flattening filter and flattening filter free linacs in 5 cm×5 cm, 10 cm×10 cm, 20 cm×20 cm, and 30 cm×30 cm fields. (a) Photon fluence and (b) electron fluence.