Study observation:Find:Pt:Head.third ventricle^Fetus:Nar:US.measured
study observation:find:pt:head.third ventricle^fetus:nar:us.measured
Study observation:Finding:To identify measures at a point in time:Head.third ventricle^Fetus:Narrative:Ultrasound.measured
study observation:finding:to identify measures at a point in time:head.third ventricle^fetus:narrative:ultrasound.measured