title: The vanishing target sign: confirmation of intraluminal needle position for ultrasound guided vascular access.
authors.affiliation: Section of Emergency Medicine, Yale University School of Medicine, New Haven, CT. sheeja.thomas@yale.edu.
authors.forename: Sheeja
authors.initials: S
authors.lastname: Thomas
authors.forename: Christopher L
authors.initials: CL
authors.lastname: Moore
mesh_terms: D002406:Catheterization, Peripheral / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D009339:Needles; D018084:Ultrasonography, Interventional; D062666:Vascular Access Devices; D014680:Veins / Q000000981:diagnostic imaging*