Figure 1.

Calculation of the vascular hysteresis loops. (a) Conventional MRIs of a 54-year-old female patient suffering from a recurrent glioma. (b) The principle of the VAM technique by using a dual contrast agent injections approach. (c) Calculation of $R2,\mathrm{GE}$ versus $R_{2,\mathrm{SE}}^{3/2}$ diagrams, which we termed vascular hysteresis loops (VHLs).