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The Ultrasound Journal
Fig. 2 | The Ultrasound Journal

Fig. 2

From: Assessment of residual gastric volume using point-of-care ultrasonography in adult patients who underwent elective surgery

Fig. 2

a Sonoanatomy of empty gastric antrum. Antrum appears flat or bull’s eye shaped structure; RA (rectus abdominis), IVC (inferior vena cava). b Sonoanatomy of distended antrum. In early-stage, solids resembles ground glass appearance, the posterior wall of antrum is obscured; RA (rectus abdominis). c Sonoanatomy of distended antrum. In late-stage, solids appear heterogenous and hyperechoic (rectus abdominis). d Distended antrum with clear fluids and gas having/hypoechoic appearance (“starry night”)

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