Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Acoustic measurements in a tissue mimicking liquid
Autore:
Macdonald, MC; Madsen, EL;
Indirizzi:
Acuson Corp, Mt View, CA USA Acuson Corp Mt View CA USAAcuson Corp, Mt View, CA USA Univ Wisconsin, Dept Med Phys, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 Dept Med Phys, Madison, WI 53706 USA
Titolo Testata:
JOURNAL OF ULTRASOUND IN MEDICINE
fascicolo: 1, volume: 18, anno: 1999,
pagine: 55 - 62
SICI:
0278-4297(199901)18:1<55:AMIATM>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEDIA;
Keywords:
ultrasound; tissue mimicking liquid; nonlinearity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
8
Recensione:
Indirizzi per estratti:
Indirizzo: Macdonald, MC GE, Med Syst, POB 414,EA-54, Milwaukee, WI 53201 USA GE POB 414,EA-54 Milwaukee WI USA 53201 waukee, WI 53201 USA
Citazione:
M.C. Macdonald e E.L. Madsen, "Acoustic measurements in a tissue mimicking liquid", J ULTR MED, 18(1), 1999, pp. 55-62

Abstract

A liquid has been developed that mimics soft tissue in terms of propagation speed, attenuation, and nonlinearity parameter B/A. Since the slope of the attenuation coefficient is nearly constant up to at least 18 MHz and the value can be anywhere in the range 0.1 through 0.7 dB/(cm.MHz), the material is ideal for assessing the effectiveness of attenuation derating of output acoustic intensities and pressures measured in water. A clinical ultrasound system was used to transmit into the tissue mimicking liquid. The pulse intensity integral and rarefactional pressure at various field locations in the tissue mimicking liquid were computed and comparedto the corresponding values measured in water with attenuation derating applied. The slope of the attenuation coefficient in the tissue mimicking liquid was used for the derating. From this data it is seen that the present practice of modeling in vi iio exposure using linearly derated measurements made in water is not always conservative.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 18:52:11