Table 3.

Maximum variation from the nominal R₉₀ and R₈₀ range in mm, R_i − R_nom, and the maximum percent difference from the nominal range, (R_i − R_nom)/R_nom × 100% for each patient considered where R_i is the range of the beams simulated with increased/decreased tissue I-values.

	Prostate Patient				Pancreas Patient			Liver Patient
	Field 1	Field 2	Field 3	Field 4	Field 1	Field 2	Field 3	Field 1	Field 2
R90 Max Difference (mm)	4.4	−3.5	−4.2	−4.1	−5.3	−4.6	7.7	3.4	3.7
R90 % of Range (%)	1.7%	−1.4%	−1.7%	−1.6%	−2.1%	1.7%	4.4%	2.5%	3.2%
R80 Max Difference (mm)	−3.4	−3.7	−3.8	−3.5	−4.1	−4.8	4.2	1.6	1.4
R80 % of Range (%)	−1.3%	−1.5%	−1.5%	−1.4%	−1.6%	−1.9%	−1.4%	1.2%	1.2%