Figure 3.

Comparison of depth-dose curve along the central axis for (A) IDNF1 and (C) IDNF2. The solid and dashed curves represent the SMC and VQA doses, respectively, and the dots indicate the measured dose. In (B) and (D), the SOBP regions of respective (A) and (C) are magnified, and differences of SMC dose from the measured dose are plotted at the bottoms. Difference is defined as

$$\frac{\text{(SMC-meas.)}}{\text{(meas.)}}x\text{100(\%)}$$

. Horizontal dotted lines aid visualization for ±3%.