title: Automated breast sonography using a 7.5-MHz PVDF transducer: preliminary clinical evaluation. Work in progress.
abstract: Breast ultrasound imaging performed with an automated machine was carried out in 89 patients, and images obtained with a conventional ceramic single-focus 4-MHz transducer and a 7.5-MHz polyvinylidene fluoride (PVDF) transducer were compared. The 7.5-MHz PVDF transducer improved overall image quality in 77% of patients and had equal penetration in 83%. It yielded greatly increased diagnostic information in 43% of 81 masses and improved visualization of calcification in 57% of 14 lesions in which calcium was visible on mammograms.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001940:Breast / Q000473:pathology; D001941:Breast Diseases / Q000175:diagnosis* / Q000000981:diagnostic imaging; D001943:Breast Neoplasms / Q000175:diagnosis* / Q000000981:diagnostic imaging; D002114:Calcinosis / Q000175:diagnosis / Q000000981:diagnostic imaging; D005260:Female; D005348:Fibrocystic Breast Disease / Q000175:diagnosis / Q000000981:diagnostic imaging; D006801:Humans; D008327:Mammography; D008875:Middle Aged; D011145:Polyvinyls; D014159:Transducers; D014463:Ultrasonography / Q000295:instrumentation; D005465:Fluorocarbon Polymers
chemical_list: D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers