Table 4.

Comparison of DVH parameters and point B dose for the obturator, external iliac and internal iliac nodal groups by applicator type. Data includes 27 tandem and ovoids (T&O) and 23 tandem and rings (T&R) for point A at 2 cm.

	T&O Mean dose(Gy)	T&R Mean dose (Gy)	Δ (Gy)	t-test
Obturator nodal group
D100	0.73 ± 0.15	0.61 ± 0.17	−0.12	0.010
D90	1.00 ± 0.16	0.87 ± 0.19	−0.13	0.013
D50	1.31 ± 0.17	1.19 ± 0.20	−0.12	0.033
2 cc	1.50 ± 0.22	1.41 ± 0.21	−0.09	0.084
1 cc	1.64 ± 0.24	1.54 ± 0.23	−0.10	0.068
0.1 cc	1.94 ± 0.29	1.81 ± 0.25	−0.13	0.066
External iliac lymph nodes
D100	0.26 ± 0.08	0.20 ± 0.05	−0.06	0.004
D90	0.49 ± 0.12	0.43 ± 0.09	−0.06	0.085
D50	0.81 ± 0.20	0.76 ± 0.16	−0.05	0.305
2 cc	1.12 ± 0.29	1.08 ± 0.24	−0.04	0.600
1 cc	1.22 ± 0.30	1.17 ± 0.25	−0.04	0.526
0.1 cc	1.44 ± 0.31	1.40 ± 0.28	−0.04	0.602
Internal iliac lymph nodes
D100	0.68 ± 0.17	0.73 ± 0.18	0.04	0.371
D90	0.91 ± 0.18	0.96 ± 0.18	0.05	0.343
D50	1.16 ± 0.22	1.27 ± 0.21	0.11	0.064
2 cc	1.42 ± 0.28	1.64 ± 0.27	0.22	0.007
1 cc	1.53 ± 0.29	1.77 ± 0.31	0.24	0.008
0.1 cc	1.79 ± 0.33	2.07 ± 0.39	0.29	0.007
Point B dose	1.45 ± 0.15	1.38 ± 0.14	−0.07	0.088