title: Phased-array ultrasound technology enhances accuracy of dual frequency ultrasound measurements - towards improved ultrasound bone diagnostics.
abstract: Overlying soft tissues attenuate ultrasound backscattered from bone, complicating diagnostics of osteoporosis at the most important fracture sites. Dual-frequency ultrasound technique (DFUS) has been proposed to solve this problem through determination of thickness and composition of overlying soft tissue. This study applies DFUS technique for the first time with a phased-array transducer to investigate if the thickness of two interfering layers (oil and water) can be accurately determined in a variety of configurations. Results indicate that DFUS may be used with phased-array ultrasound systems, making them a suitable combination to consider in future development of clinical in vivo ultrasound methodologies.
authors.affiliation: a Department of Applied Physics , University of Eastern Finland , Kuopio , Finland ;|b Diagnostic Imaging Centre , Kuopio University Hospital , Kuopio , Finland.
authors.forename: Hans
authors.initials: H
authors.lastname: Linder
authors.affiliation: a Department of Applied Physics , University of Eastern Finland , Kuopio , Finland ;
authors.forename: Markus K H
authors.initials: MK
authors.lastname: Malo
authors.affiliation: a Department of Applied Physics , University of Eastern Finland , Kuopio , Finland ;
authors.forename: Jukka
authors.initials: J
authors.lastname: Liukkonen
authors.affiliation: a Department of Applied Physics , University of Eastern Finland , Kuopio , Finland ;|b Diagnostic Imaging Centre , Kuopio University Hospital , Kuopio , Finland.
authors.forename: Jukka S
authors.initials: JS
authors.lastname: Jurvelin
authors.affiliation: a Department of Applied Physics , University of Eastern Finland , Kuopio , Finland ;|b Diagnostic Imaging Centre , Kuopio University Hospital , Kuopio , Finland.
authors.forename: Juha
authors.initials: J
authors.lastname: Töyräs
mesh_terms: D001842:Bone and Bones / Q000000981:diagnostic imaging*; D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D008954:Models, Biological; D010024:Osteoporosis; D019047:Phantoms, Imaging; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*
keywords: Phased-array; pulse-echo; quantitative; ultrasound