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. 2015 Apr 29;10(4):e0124118. doi: 10.1371/journal.pone.0124118

Fig 1. Data acquisition and image processing.

Fig 1

(A) The first excitation of diffusion-weighted images including T2WI, DWIx, DWIy and DWIz was discarded as a dummy scan (not shown here). After reaching the equilibrium state of the magnetization, diffusion-weighted images were dynamically acquired in the order of T2WI, DWIx, DWIy and DWIz (long arrow) on each excitation for a total of 8 repetitions (short arrow). (B) Images with the top four SNR were averaged to generate a reference image. By this way, mean T2WI, DWI(x, y and z) were generated to serve as reference images. Then reference ADC(x, y and z) were calculated based on the reference T2WI and DWI(x, y and z). (C) T2WI, DWI(x, y and z) and ADC(x, y and z) with a NEX of 3 to 8 were generated from the raw images. For example, a set of “3” continuous raw images were averaged to generate an image with a NEX = 3, and so forth.