title: Needle guidance techniques.
authors: W N
authors: WN
authors: McDicken
mesh_terms: D001707:Biopsy, Needle; D005260:Female; D006801:Humans; D009339:Needles; D011247:Pregnancy; D013242:Sterilization; D014463:Ultrasonography / Q000379:methods*; D016216:Ultrasonography, Prenatal / Q000379:methods*