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Titolo:
Nonlinearity parameter for tissue-mimicking materials
Autore:
Dong, F; Madsen, EL; MacDonald, MC; Zagzebski, JA;
Indirizzi:
Univ Wisconsin, Dept Med Phys, Madison, WI 53706 USA Univ Wisconsin Madison WI USA 53706 Dept Med Phys, Madison, WI 53706 USA Acuson Inc, Mt View, CA 94043 USA Acuson Inc Mt View CA USA 94043Acuson Inc, Mt View, CA 94043 USA
Titolo Testata:
ULTRASOUND IN MEDICINE AND BIOLOGY
fascicolo: 5, volume: 25, anno: 1999,
pagine: 831 - 838
SICI:
0301-5629(199906)25:5<831:NPFTM>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
ACOUSTIC NONLINEARITY; BIOLOGICAL MEDIA; ULTRASOUND; B/A; RESOLUTION; FAT;
Keywords:
tissue-mimicking materials; nonlinearity parameter; B A; second harmonic;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
28
Recensione:
Indirizzi per estratti:
Indirizzo: Madsen, EL Univ Wisconsin, Dept Med Phys, 1530 Med Sci Ctr, Madison, WI 53706 USA Univ Wisconsin 1530 Med Sci Ctr Madison WI USA 53706 53706 USA
Citazione:
F. Dong et al., "Nonlinearity parameter for tissue-mimicking materials", ULTRASOUN M, 25(5), 1999, pp. 831-838

Abstract

A finite amplitude insert-substitution method has been used to determine the ultrasonic nonlinearity parameter BIA of nine versions of water-based, macroscopically uniform ultrasonically tissue-mimicking (TM) nonfat and fat materials. In this method, the amplitude of the second harmonic following transmission through degassed distilled water with known B/A (B/A = 5.2) andthe amplitude of the second harmonic following transmission through the unknown sample are measured. The ratio of these amplitudes allows calculationof the B/A of the sample. Measured B/A values of the nonfat materials range from 5.6 to 6.6, These values compare favorably with published values fornonfat soft tissues. In contrast, the measured B/A values for two tissue-mimicking fat materials are 9.8 and 11.1; these two values represent the lowand high end of B/A for most fresh fatty tissues. For comparison, B/A was measured for two commonly available uniform materials, corn oil and ethylene glycol, and the results are in good agreement with published values. (C) 1999 World Federation for Ultrasound in Medicine & Biology.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 17:24:16