FIGURE 3.

(a) Based on the points on a circle shown in Fig. 2c and corresponding golden angle, a radial trajectory can be designed. Here, each radial spoke starts from the center and the nth spoke rotates from the (n‐1)th spoke by a golden angle of ~137.51^°. (b) When full radial spokes are acquired, one just needs to cover 180^° to sample a full circle. The golden angle then becomes 180^°/GR ≈ 111.25^°. (c) For comparison, to sample a radial k‐space with 20 full radial spokes using standard linear ordering, each spoke rotates by an angle of 180^°/20 = 9^°.