where ytand yt+1are the location of early foci in two subsequent steps, γsis the degree of autocorrelation with the previous movement vector (dt−1), T is a rotation matrix for the average turn angle (θs), and Σsis the random walk displacement matrix. Random movement is determined ...
When the vascular bed is quantified with spin-echo (SE) sequence, the blood flow and volume are capillary weighted with a radius lower than 10 μm13, while with gradient-echo (GE) sequence, the hemodynamic parameters are weighted to total vessels of all size14. In this way, separate ...