Potential of microbubbles for use as point targets in phase aberration correction

Bubbles can be produced by vaporization of perfluorocarbon droplets of a few /spl mu/m diameter. These bubbles can reach over 100 /spl mu/m in diameter and their backscatter is calculated to be well more than 10 dB above that of several organ tissues. At appropriate sizes, small acoustic amplitudes,...

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Veröffentlicht in:	IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2004-12, Vol.51 (12), p.1639-1648
Hauptverfasser:	Psychoudakis, D., Fowlkes, J.B., Volakis, J.L., Carson, P.L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aberration Acoustic scattering Acoustics Algorithms Amplitudes Backscatter Backscattering Biological and medical sciences Blood Bubbles Computer Simulation Diagnostic systems Droplets Equations Exact sciences and technology Frequency estimation Fundamental areas of phenomenology (including applications) General equipment and techniques Image Enhancement - methods Image Interpretation, Computer-Assisted - methods Instruments, apparatus, components and techniques common to several branches of physics and astronomy Investigative techniques, diagnostic techniques (general aspects) Laboratories Medical sciences Microbubbles Microorganisms Microspheres Miscellaneous. Technology Models, Biological Models, Statistical Particle Size Phase error Physics Psychology Rayleigh scattering Reproducibility of Results Resonance Scattering, Radiation Sensitivity and Specificity Transducers Ultrasonic imaging Ultrasonic investigative techniques Ultrasonics, quantum acoustics, and physical effects of sound Ultrasonography - methods
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Beschreibung
Zusammenfassung:	Bubbles can be produced by vaporization of perfluorocarbon droplets of a few /spl mu/m diameter. These bubbles can reach over 100 /spl mu/m in diameter and their backscatter is calculated to be well more than 10 dB above that of several organ tissues. At appropriate sizes, small acoustic amplitudes, and diagnostic frequencies (2-15 MHz), bubbles can be approximated by the nonrigid sphere-scattering solution employed here. This paper concerns the bubble size and its implications on the backscatter amplitude and the phase error introduced in diagnostic ultrasound when assuming that the bubble acts as a point target for phase aberration correction.
ISSN:	0885-3010 1525-8955
DOI:	10.1109/TUFFC.2004.1386681