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Titolo:
Detection of bone disease with ultrasound - comparison with bone densitometry
Autore:
Litniewski, J; Nowicki, A; Sawicki, A;
Indirizzi:
Inst Fundamental Technol Res, Ultrason Dept, PL-00049 Warsaw, Poland Inst Fundamental Technol Res Warsaw Poland PL-00049 00049 Warsaw, Poland Natl Food & Nutr Inst, PL-02903 Warsaw, Poland Natl Food & Nutr Inst Warsaw Poland PL-02903 st, PL-02903 Warsaw, Poland Warsaw Osteoporosis Ctr, PL-02123 Warsaw, Poland Warsaw Osteoporosis Ctr Warsaw Poland PL-02123 , PL-02123 Warsaw, Poland
Titolo Testata:
ULTRASONICS
fascicolo: 1-8, volume: 38, anno: 2000,
pagine: 693 - 697
SICI:
0041-624X(200003)38:1-8<693:DOBDWU>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Keywords:
backscattering; bones; frequency shift; in-vivo measurements; osteoporosis;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
3
Recensione:
Indirizzi per estratti:
Indirizzo: Litniewski, J Inst Fundamental Technol Res, Ultrason Dept, Swietokrzyska 21, PL-00049 Warsaw, Poland Inst Fundamental Technol Res Swietokrzyska 21 Warsaw Poland PL-00049
Citazione:
J. Litniewski et al., "Detection of bone disease with ultrasound - comparison with bone densitometry", ULTRASONICS, 38(1-8), 2000, pp. 693-697

Abstract

A system for ultrasonic in-vivo examination of a heel bone (calcaneus) wasdeveloped. When operating in transmission mode, the system can measure broadband ultrasonic attenuation-BUA, speed of sound-SOS and thickness of bone. BUA and SQS are measured by comparing the pulses transmitted through the heel with the reference pulse transmitted through water. In our approach, we operate in the backscattered mode in addition to transmission. The backscattered ultrasonic technique for bone characterization is very promising because the magnitude of backscattered waves depends on the scattering cross-section of a trabecular structure that, to some extent, describes the microarchitecture of a calcaneus. Additionally, when the backscattered and transmitted signals are compared, some of the signal distortions caused by tissue and bone interfaces are reduced. A set of data representing signals transmitted through the heel and reflected inside a calcaneus for patients with osteoporosis was collected. Several signal-processing techniques were applied in order to smooth the backscattered signal and to calculate a trabecular structure crossection (TSC) function. Results obtained by these approaches along with a spectral shift method and a standard BUA measurement are presented and compared to X-ray bone mineral density determination results. (C) 2000 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 27/09/20 alle ore 22:11:36