A study of two-dimensional array transducers for limited diffraction beams.

A study of two-dimensional array transducers for limited diffraction beams. Research Abstract Details 

Research Abstract Table of Contents

Jump to the:

A study of two-dimensional array transducers for limited diffraction beams. Abstract Text:

J Y Lu,J F Greenleaf,

The newly developed limited diffraction beams such as the Bessel beams and X waves have a large depth of field and approximate depth-independent property. They have possible applications in medical imaging, color Doppler imaging, tissue characterization, and nondestructive evaluation of materials, and in other wave related physical branches such as electromagnetics and optics. However, limited diffraction beams are currently produced with an annular array transducer that has to be steered mechanically. In this paper, we study the feasibility of steering these beams with a two-dimensional array, and show that there will be almost no distortion of beams if the effective aperture reduction of the array is properly compensated so that the beams have a constant transverse profile as they are steered. In addition, methods for reducing the complexity of the electronic multiplexing of the array elements are proposed. We also investigate the influences of the interelement distance and the size of array elements on the sidelobes and grating lobes of limited diffraction beams as the beams are steered. They are similar to those previously reported for conventional beams.

A study of two-dimensional array transducers for limited diffraction beams. Publishing Authors By Initials

JY Lu,JF Greenleaf,

For similar abstracts research abstracts see: abstracts research

PUBMED ID PMID:

MEDLINE DATE:

A study of two-dimensional array transducers for limited diffraction beams. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: IEEE transactions on ultrasonics, ferroelectrics,

VOLUME: 41

Page Numbers: 724-39

Journal Abbreviation:

ISSN: 0885-3010

DAY: 11

MONTH: 02

YEAR: 1994

A study of two-dimensional array transducers for limited diffraction beams. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 9882735

A study of two-dimensional array transducers for limited diffraction beams. Keywords Mesh Terms:

KEYWORDS:

MESH TERMS:

Chemical & Substance for Abstract: A study of two-dimensional array transducers for limited diffraction beams. Information

Substance Name:

Registry Number:

Grant and Affiliation Information for A study of two-dimensional array transducers for limited diffraction beams.

AFFILIATION: Dept. of Physiol. and Biophys., Mayo Clinic, Rochester, MN.

Country: United States

AGENCY:

GRANT:

ACRONYM:

MEDLINETA: IEEE Trans Ultrason Ferroelect

REFSOURCE:

DATABASENAME:

ACCESSION NUMBER:

Number Hits: 0

A study of two-dimensional array transducers for limited diffraction beams Related Publications

• A study of two-dimensional array transducers for limited diffraction beams.
• Adaptive speckle reduction filter for log-compressed B-scan images.
• Detection of tissue harmonic motion induced by ultrasonic radiation force using pulse-echo ultrasound and Kalman filter.
• Estimation of tissue stiffness with the surface wave generated by ultrasound.
• Estimation of tissue's elasticity with surface wave speed.
• Experimental verification of nondiffracting X waves.
• Harmonic pulsed excitation and motion detection of a vibrating reflective target.
• In vitro and in vivo real-time imaging with ultrasonic limited diffraction beams.
• Measurement of wave velocity in arterial walls with ultrasound transducers.
• Modulated ultrasound and multifrequency radiation force.
• Multifrequency vibro-acoustography.
• Narrowband chemical-shift imaging.
• Nondiffracting X waves-exact solutions to free-space scalar wave equation and their finite aperture realizations.
• Phase aberration correction using ultrasound radiation force and vibrometry optimization.
• Sidelobe reduction for limited diffraction pulse-echo systems.
• Stable and unbiased flow turbulence estimation from pulse echo ultrasound.
• State-of-the-art surgery, circa 1897-1905.
• The effect of concave and convex weight adjustments on self-organizing maps.
• Ultrasonic nondiffracting transducer for medical imaging.
• Viscoelastic properties of myocardium tissue with surface and shear wave methods.
• Wave propagation modes and arterial stiffness.