The "silhouette" sign in urinary tract calculi Experimental demonstration.
D015502:Absorptiometry, Photon; D003973:Diatrizoate; D006801:Humans; D008962:Models, Theoretical; D001744:Urinary Bladder Calculi / Q000000981:diagnostic imaging; D014545:Urinary Calculi / Q000000981:diagnostic imaging*
D003973:Diatrizoate