Table 2.

Gamma pass rate for a plan with and without airway removed from the ROI.

Beam	Regular ROI	ROI with airway removed
1	93.6	97.5
2	92.9	95.0
3	90.1	94.4
4	93.3	96.8
5	87.3	93.3
6	90.4	96.9
7	91.3	97.6
8	96.0	98.5
9	96.5	94.6
10	92.0	90.6
11	93.7	88.0
12	69.2	81.8
13	82.1	93.8
Average	89.9	93.8

ROI, region of interest.