title: [Ultrasonic tissue characterization of parotid tumors--measurement of attenuation coefficient in excised specimens].
mesh_terms: D000230:Adenocarcinoma / Q000503:physiopathology; D000236:Adenoma / Q000503:physiopathology; D006801:Humans; D066298:In Vitro Techniques; D010307:Parotid Neoplasms / Q000503:physiopathology*; D014465:Ultrasonics / Q000295:instrumentation