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Mean LV twist for healthy subjects (A) and patients with DMD (B) for breath-held (BH, solid), free-breathing with averaging (AVG, dashed) and bellows gated (BEL, dash-dotted) respiratory motion compensation. Error bars are standard error of the mean for clarity and characterize within group physiologic variance. BH LV twist is generally higher compared with AVG or BEL, especially at its peak.
