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Artifacts in urinary tract ultrasonography
1Yale University School of Medicine, New Haven, CT 06510.
Urologic Radiology
|January 1, 1991
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.