A gradient echo pulse sequence with 3 RF pulses (right panel in figure bellow) is used to generate 3 k-space trajectory lines (thick lines labeled as A, B, and C in left panel of figure below). Match each trajectory with the corresponding echo signal (labeled 1, 2, and 3 in the right panel). Note dotted gray lines represent kx and ky coordinate axes that cross at (kx,ky) = 10,0) in the middle of left panel. (2) B * Echo C RF O A is matched to 1, B is matched to 2, and C is matched to 3. O A is matched to 2, B is matched to 1, and C is matched to 3. A is matched to 3, B is matched to 1, and C is matched to 2. A is matched to 2, B is matched to 3, and C is matched to 1