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Fig. 4D —35-year-old man with healthy knee. MR images show that in addition to signal-to-noise ratio and contrast-to-noise ratio advantages, IDEAL–SPGR sequence yields not only images with robust fat saturation (A) but also fat-only (B) and in-phase (C) and out-of phase (D) recombined images with no additional imaging time. This capability may lead to methods for evaluating bone marrow abnormalities such as edema, which is common in patients with osteoarthritis.