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Fig. 2A —Single-shot fast spin-echo (TE = 90 milliseconds; flip angle, 90°; slice thickness, 7.0 mm). Conventional implementation (TR = 1,510 milliseconds; breath-hold, 19 seconds; 13 slices) (A) and time-efficient implementation (TR = 530 milliseconds; breath-hold, 12 seconds; 22 slices) (B) images. Image quality is visually similar between the two implementations, although signal-to-noise ratios differ (see Table 3) and there are subtle tissue contrast differences. Time-efficient image shows hypointensity in major organs (liver, spleen, skeletal muscle, and kidney), but CSF and fat appear visually similar between the two implementations.