Table 2. The average image error of the CS reconstructed image and the iCS reconstructed image compared with the full k-space reference image.

		Slice1	Slice3	Slice4	Slice6	Slice7	Slice9
Average Image error	CS 1/100	0.0122	0.0094	0.0098	0.0100	0.0097	0.0088
	CS 1/11	0.0108	0.0072	0.0075	0.0080	0.0078	0.0082
	iCS 1/100	0.0090	0.0066	0.0070	0.0075	0.0076	0.0052

By using the iCS method, the image error of each slice can be reduced compared with that of the CS method at the same undersampling rate or the same acquisition time, resulting in better image quality.