HIGHER HARMONICS OF VIBRATING GAS-FILLED MICROSPHERES .2. MEASUREMENTS

Authors
DEJONG N CORNET R LANCEE CT
Citation
N. Dejong et al., HIGHER HARMONICS OF VIBRATING GAS-FILLED MICROSPHERES .2. MEASUREMENTS, Ultrasonics, 32(6), 1994, pp. 455-459
Citations number
13
Categorie Soggetti
Acoustics,"Radiology,Nuclear Medicine & Medical Imaging
Journal title
Ultrasonics → ACNP
ISSN journal
0041624X
Volume
32
Issue
6
Year of publication
1994
Pages
455 - 459
Database
ISI
SICI code
0041-624X(1994)32:6<455:HHOVGM>2.0.ZU;2-6
Abstract
Acoustic measurements on diluted Albunex at two driving frequencies (1 and 2 MHz) are reported which show that the level of the second-harmo nic response is about 20 dB below the first harmonic at an acoustic pr essure amplitude of 50 kPa. It is demonstrated that, under controlled conditions, it is possible to discriminate between Albunex and other s cattering/reflecting objects using the non-linear behaviour of the mic rospheres.