Table 1.

Statistical metrics for CT modality without noise.

Images	Histogram		Correlation	Differential Attack		PSNR	Information Entropy
	Standard	Encrypted		NPCR (%)	UACI (%)
Image 1	1,555,164	3,375,508	0.9970	99.611	33.461	34.623	5.5081
Image 2	1,942,777	5,880,577	0.9964	99.610	33.460	33.186	5.2665
Image 3	2,926,366	6,511,850	0.9976	99.609	33.463	34.982	4.8647
Image 4	1,969,829	5,299,018	0.9954	99.611	33.459	33.182	5.077
Image 5	2,776,087	5,805,249	0.9967	99.610	33.460	34.945	4.6828
Image 6	1,983,221	5,394,168	0.9956	99.610	33.462	33.198	5.0558
Image 7	3,108,704	6,811,427	0.9974	99.611	33.460	35.053	4.5683
Image 8	2,783,671	8,248,927	0.9958	99.610	33.460	33.483	4.5248
Image 9	2,887,118	6,433,437	0.9976	99.612	33.461	34.979	4.7115
Image 10	1,168,385	3,379,135	0.9956	99.610	33.463	32.850	5.6934