Table 2.

UTC spectral estimates for the 11 patients.

Patient No.	Slope (dB∕MHz)			Intercept (dB)			Midband fit (dB)
	Normal tissue	Irradiated tissue	Difference	Normal tissue	Irradiated tissue	Difference	Normal tissue	Irradiated tissue	Difference
1	1.14	1.16	0.02	−8.08	−2.38	5.70	−1.82	4.03	5.85
2	−0.19	0.42	0.61	0.22	0.91	0.69	−0.85	3.24	4.09
3	0.20	1.27	1.07	−11.47	−9.15	2.32	−10.34	−2.16	8.18
4	0.17	0.70	0.53	−8.60	−5.21	3.39	−7.65	−1.37	6.28
5	0.81	0.62	−0.19	−11.27	−5.80	5.47	−6.83	−2.36	4.47
6	1.41	1.90	0.49	−13.07	−12.32	0.75	−5.33	−1.84	3.49
7	0.51	−0.42	−0.93	−8.24	−0.61	7.63	−5.42	−2.90	2.52
8	0.75	0.91	0.16	−2.03	−0.32	1.71	2.12	4.69	2.57
9	−0.26	0.39	0.65	0.28	0.16	−0.12	−1.16	2.31	3.47
10	1.10	1.01	−0.09	−4.99	−4.13	0.86	1.06	1.46	0.40
11	1.34	1.08	−0.26	−8.18	−4.23	3.95	−0.78	1.73	2.51