Figure 2

Dose volume histograms of case 4. (a) GTV, (b) PTV and (c) normal liver in the practice plan; (d) GTV, (e) PTV and (f) normal liver in protocol plan 1; and (g) GTV, (h) PTV and (i) normal liver in protocol plan 2.
Dose volume histograms of case 4. (a) GTV, (b) PTV and (c) normal liver in the practice plan; (d) GTV, (e) PTV and (f) normal liver in protocol plan 1; and (g) GTV, (h) PTV and (i) normal liver in protocol plan 2.