[Retracted] Medical Image Encryption Based on 2D Zigzag Confusion and Dynamic Diffusion

Table 8

UACI results for test images.

Tested image size M-by-N 512-by-512		UACI critical value [40]
		Name	UACI (%)	UACI test results
				0.05-level	0.01-level	0.001-level
CT	32.3884	Fail	Fail	Fail
MRI	31.4729	Fail	Fail	Fail
Ultrasound	32.4262	Fail	Fail	Fail
Tested image size M-by-N 1024-by-1024		UACI critical value [40]
		Name (size)	UACI(%)	UACI test results
				0.05-level	0.05-level	0.05-level
X-ray	31.5516	Fail	Fail	Fail
CT-kidney	32.8412	Fail	Fail	Fail