Figure 1: Geometry of head model used in temperature calculations.

Figure 2: Distributions of B₁+ (left), SAR (center), and resulting temperature increase (right) for quadrature surface ciol (placed at back of head) at 300MHz. Linear grayscale from 0 (black) to 15 mT (white) for B₁+, 0 to 20 w/kg for SAR, and 0 to 1.5 degree C for temperature increase. Contours for temperature increase at 0.5, 1, 1.5, 2.0, and 2.5 degree C.

Figure 3: Sagittal slice through occipital lobe showing calculated heating effects in occipital lobe during functional activation of the calcarine fissure. Model geometry (top) baseline temperature (T_base) distribution (middle) and change in temperature upon activation (ΔT; bottom) of grey matter (G.M.) in calcarine fissure for normal physiological parameters. Slice shown is on sagittal section through calcarine fissure of complete three-dimensional head model (2). T_blood is 37 degree C.