title: Artifacts in urinary tract ultrasonography.
abstract: Ultrasound is the only technique that uses artifacts in diagnosis. "Good through transmission" and a "refractive artifact" indicate fluid. Acoustic shadowing can be produced by different tissues leading to different types of shadows and specific diagnoses. Fat produces a decrease in the speed of sound as compared with soft tissue leading to the writing of structures behind fat distal to their actual position. Other artifacts are also described.
authors.affiliation: Yale University School of Medicine, New Haven, CT 06510.
authors.forename: A T
authors.initials: AT
authors.lastname: Rosenfield
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D014463:Ultrasonography; D014551:Urinary Tract / Q000000981:diagnostic imaging*; D014570:Urologic Diseases / Q000000981:diagnostic imaging*