[Principles of general ultrasonographic practice. I. Basic concepts and definitions].
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D002769:Cholelithiasis / Q000000981:diagnostic imaging; D006391:Hemangioma / Q000000981:diagnostic imaging; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging; D008113:Liver Neoplasms / Q000000981:diagnostic imaging; D012680:Sensitivity and Specificity; D013154:Spleen / Q000000981:diagnostic imaging; D013163:Splenomegaly / Q000000981:diagnostic imaging; D013961:Thyroid Gland / Q000000981:diagnostic imaging; D014463:Ultrasonography / Q000379:methods