Fig. 3
Simulation of ghost peak for interleaved two flyback gradient echo trains. The true water line was set at 0 ppm. The reference spectrum, without a ghost peak in each group of the spectra, was computed from the original flyback echo train. (a, b) Simulations of the water ghost peaks, gw, caused by the temporal offset of echoes in the second echo train by 1.1, 2.3, and 3.46 µs. Spectra were computed from the VOI (a) V1, and (b) V2 shown in Fig. 2. (c, d) Simulations of the ghost peaks induced by changes in the magnitude of echoes in the second echo train. (c) Echoes decreased by factors of 0.9, 0.8, and 0.7. (d) Echoes increased by factors of 1.1, 1.2, and 1.3. (e, f) Simulation of ghost peaks caused by zero-order phase shifts of echoes in the second echo train by (e) -20°, -40°, -60°, and (f) by 20°, 40°, 60°.
