Fig. 1

BOLD-MRI and renal pathological pictures of kidneys. Representative magnetic resonance images of a III type LN (a,e,i), III + V type (b,f,j), IV type (c,g,k) and IV + V type (d,h,l) LN patients. The BOLD-MRI pictures were expressed as pseudo-color maps. For example, blue represents the areas of lowest R2* values and oxyhemoglobin levels, whereas green, yellow, and red, in that order, represent increasing R2* values and higher oxyhemoglobin levels on the colored R2* map