The average CNR values of the full k-space reference image, the CS reconstructed image at 1/100 & 1/11 undersampling rates and the iCS reconstructed image of each slice.

By using the iCS method, the CNR of each slice is significantly improved compared with that of the CS method at the same undersampling rate or the same acquisition time.

采用iCS方法时，在相同欠采样率或相同采集时间的条件下，各切片的对比度噪声比（Contrast-to-Noise Ratio, CNR）均较CS方法得到显著提升。