Table 4.

The averaged total peripheral doses in cGy over 35 fractions measured for 10 patient plans at different distances inferior to the treatment field edges for both IMRT plans and triple‐arc RA plans.

Distances (from the inferior field edge in cm, position)	Nine‐field IMRT	Triple‐arc RA
10.0 cm, near thorax and breast	$162.4\pm 28.4$	$144.6\pm 56.9$
17.5 cm, near thorax and breast	$82.8\pm 9.5$	$59.4\pm 13.7$
25.0 cm, upper abdomen	$39.1\pm 4.0$	$27.4\pm 5.8$
32.5 cm, abdomen	$27.0\pm 3.4$	$14.7\pm 3.0$
40.0 cm, lower abdomen	$24.0\pm 2.8$	$11.0\pm 2.3$
47.5 cm, pelvis	$16.4\pm 1.4$	$7.3\pm 1.3$
55.0 cm, pelvis	$8.8\pm 0.8$	$4.2\pm 0.7$