title: Improved needle-tip visualization by color Doppler sonography.
authors.affiliation: Russell H. Morgan Department of Radiology and Radiological Science, Johns Hopkins Medical Institutions, Baltimore, MD 21205.
authors.forename: U M
authors.initials: UM
authors.lastname: Hamper
authors.forename: B L
authors.initials: BL
authors.lastname: Savader
authors.forename: S
authors.initials: S
authors.lastname: Sheth
mesh_terms: D001707:Biopsy, Needle / Q000379:methods*; D003116:Color; D006801:Humans; D009339:Needles; D014463:Ultrasonography / Q000379:methods*