A New Robust Adaptive Fusion Method for Double-Modality Medical Image PET/CT

Table 6

PSNR results of six fusion methods.

No.	Minimum	Maximum	Weighted average	W-CS	CT-CS	Proposed algorithm
1	67.6778	4.2274	16.9469	16.7103	25.9103	98.4371
2	51.3925	4.0218	17.5258	18.1958	25.8573	58.6880
3	57.8488	3.1679	16.7534	17.3400	26.3616	61.6637
4	68.9252	2.7377	15.9110	16.2908	30.5160	74.8556
5	49.1341	4.3197	17.3668	18.5973	25.9304	56.4141
6	37.8793	4.9918	17.0994	16.8266	25.6844	41.7599
7	48.6666	5.5057	19.1978	18.8378	28.1369	64.9162
8	51.7864	5.5254	19.2524	18.5608	30.6913	60.3129
9	38.8599	8.3020	21.7048	21.4392	29.9463	43.9237
10	63.0813	4.0567	16.8100	18.1006	27.2135	76.2280
11	61.1094	5.1122	17.398	17.9735	31.5651	80.3592
12	54.2517	4.9864	17.4909	17.5970	27.5333	65.8369
13	55.5879	4.2598	18.064	19.1143	27.9871	63.5656
14	63.3288	3.6572	16.3681	16.8296	22.7251	79.6963
15	58.5403	5.3442	19.1583	19.9471	28.8951	79.7845
16	64.2377	2.2901	16.1327	17.0276	24.9213	71.2614
17	70.716	2.3219	15.7789	15.8686	26.5409	78.4282
18	66.8253	2.2940	16.1412	16.5010	24.9676	73.1706
19	55.7279	2.2588	16.0742	15.9996	27.0434	63.3388
20	65.7483	4.2700	16.6521	17.3850	31.7650	91.9760