Figure 7.

A four-channel linear array is used to acquire an image with acceleration factor R = 2. This results in four single-coil images where two pixels, I_A and I_B, are aliased. The aliased pixels, F₁ through F₄, in each single-coil image are sums of the two pixels weighted by the appropriate coil sensitivity values. Given that the coil sensitivity values (the C_A and C_B terms) are known, SENSE solves the resulting system of equations with four known values (F₁, F₂, F₃, and F₄) and two unknown values (I_A and I_B) to unfold the aliased single-coil images into a full FOV image. [Color figure can be viewed in the online issue, which is available at wileyonlinelibrary.com.]