FIGURE 11.

A, RF pulse and corresponding slice excitation profiles of single‐band and multi‐band pulses. The phase modulation of the multi‐band pulse reduced the peak B ₁ ⁺ while keeping the bandwidth of each band and pulse duration the same. B, The proposed multi‐band density‐weighted CRT MRSI method using the third STEAM pulse as a multi‐band excitation pulse. 96 rings with different radii are distributed evenly in three sets of rings with different z‐blip gradients. The single‐slice sequence has the same 96 rings in the k _x‐k _y plane without encoding with z‐blip gradients. Reproduced from the work of Xia et al ²²⁰