Radiation Oncology

Table 3 Comparison of the mean pixel values in fat and muscle between the pCT, CBCT and corrected CBCT images with the three different DR algorithms

From: Assessing the impact of choosing different deformable registration algorithms on cone-beam CT enhancement by histogram matching

Mean pixel values [HU]
Patient’s number	Fat
Patient’s number	pCT	CBCT	CBCT_DR-NCC	CBCT_DR-MI	CBCT_DR-NMI
1	− 108.16	− 144.37	−90.73	−92.50	−92.06
2	−87.68	− 163.92	−84.98	−88.25	−85.77
3	−104.83	− 139.75	−90.03	−91.48	−91.16
4	− 103.80	− 151.60	−104.64	− 105.23	−105.19
5	−103.43	− 170.34	− 102.28	−103.16	−102.89
6	−109.43	− 130.55	−98.50	− 99.30	−99.09
7	−97.70	− 148.56	−97.08	−98.47	−97.97
8	−108.62	− 213.92	− 108.76	− 108.53	−108.04
9	− 110.23	−160.35	− 105.87	− 106.76	−106.82
10	−99.50	−123.33	−100.24	− 101.55	−101.40
RMSD		56.83	8.19	7.38	7.57
	Muscle
1	49.45	−1.37	31.76	30.62	30.68
2	51.61	25.39	42.09	41.12	41.68
3	47.59	59.00	53.25	54.53	53.25
4	42.17	45.81	50.65	51.61	50.93
5	48.87	11.70	47.66	47.66	47.65
6	49.68	40.03	50.09	50.78	50.25
7	49.73	28.39	45.44	46.12	46.01
8	46.46	13.39	36.65	39.04	39.34
9	48.85	56.30	52.18	51.95	51.86
10	49.44	51.98	45.97	47.25	46.40
RMSD		25.49	7.72	8.28	8.02

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ISSN: 1748-717X

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