Table 3.

Comparison between TPS measured and calculated (Fitted) isodose volumes and their percentage deviations from TPS and correlation coefficient for Ir-192 HDR brachytheray sources.

Ir-192	3 Gy				9 Gy				15 Gy				18 Gy
Plans	TPS	Fitted	Fitted-TPS	% Difference	TPS	Fitted	Fitted-TPS	% Difference	TPS	Fitted	Fitted-TPS	% Difference	TPS	Fitted	Fitted-TPS	% Difference
1	531.80	532.75	0.95	0.18	105.89	103.49	−2.40	−2.27	46.76	47.65	0.89	1.90	34.12	36.06	1.94	5.69
2	566.45	566.07	−0.38	−0.07	111.84	109.27	−2.57	−2.30	48.68	50.21	1.53	3.15	35.73	37.98	2.25	6.29
3	503.82	507.46	3.64	0.72	101.22	99.10	−2.12	−2.09	45.32	45.71	0.39	0.85	33.51	34.61	1.10	3.28
4	472.86	470.69	−2.17	−0.46	95.44	92.72	−2.72	−2.85	40.76	42.88	2.12	5.20	29.23	32.50	3.27	11.17
5	554.37	549.98	−4.39	−0.79	108.87	106.48	−2.39	−2.20	46.88	48.97	2.09	4.47	33.87	37.05	3.18	9.40
6	567.08	566.07	−1.01	−0.18	111.71	109.27	−2.44	−2.18	48.69	50.21	1.52	3.13	35.65	37.98	2.33	6.53
7	562.53	562.63	0.10	0.02	110.68	108.67	−2.01	−1.81	48.22	49.95	1.73	3.58	35.26	37.78	2.52	7.15
8	518.52	517.81	−0.71	−0.14	103.71	100.89	−2.82	−2.71	45.43	46.50	1.07	2.36	33.14	35.20	2.06	6.23
9	482.69	481.03	−1.66	−0.34	95.65	94.51	−1.14	−1.19	41.40	43.67	2.27	5.49	30.06	33.09	3.03	10.08
10	510.88	513.21	2.33	0.46	102.45	100.10	−2.35	−2.30	45.51	46.15	0.64	1.40	33.67	34.94	1.27	3.77
Mean(SD)				−0.06 (0.44)				−2.19 (0.46)				3.15 (1.57)				6.96 (2.58)
Correl (p)	0.998 (0.000)				0.997 (0.000)				0.972 (0.000)				0.941 (0.000)