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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: J Magn Reson Imaging. 2014 Oct 1;42(1):23–41. doi: 10.1002/jmri.24768

Figure 2.

Figure 2

Flowcharts of processing steps of SWI (a) and QSM (b). (a) SWI combines both the magnitude and a filtered phase map in a multiplicative relationship to enhance image contrast. Minimum intensity projection (MIP) is commonly applied to highlight the veins. The contrast can be adjusted by varying the number of slices used in MIP (examples shown in later figures). SWI flowchart adapted from Reichenbach et al (3). (b) There are two major steps involved in QSM: filtering background phase and solving an inverse problem.