Figure 13.

Illustration of commonly used coil combination schemes. Four coil images are show in the central row of the figure. To the right of the coil image is an illustration of a simple but commonly used coil combination method; the root-sum-squares (RSS) coil combination. Above and below the coil images are two different sets of coil sensitivity maps. On the top, absolute coil sensitivities have been used to generate a B1-weighted coil combination with uniform intensity. On the bottom relative coil sensitivities have been used to generate an adaptively combined image.