dorsal/arxiv
View SchemaUltrasonic imaging with limited-diffraction beams
| Authors | Jian-yu Lu |
|---|---|
| Categories | |
| ArXiv ID | physics/0603190 |
| URL | https://arxiv.org/abs/physics/0603190 |
| Journal | Localized Waves, Editors: Hugo E. Hernandez-Figueroa, Michel Zamboni-Rached, and Erasmo Recami, Publisher: John Wiley & Sons, Inc., New Jersey, Chapter 4, pp. 97-128, 2008 (ISBN: 978-0-470-10885-7) |
Abstract
Limited-diffraction beams are a class of waves that may be localized in space and time. Theoretically, these beams are propagation invariant and can propagate to an infinite distance without spreading. In practice, when these beams are produced with wave sources of a finite aperture and energy, they have a very large depth of field, meaning that they can keep a small beam width over a large distance. Because of this property, limited-diffraction beams may have applications in various areas such as medical imaging and tissue characterization. In this paper, fundamentals of limited-diffraction beams are reviewed and the studies of these beams are put into a unified theoretical framework. Theory of limited-diffraction beams is further developed. New limited-diffraction solutions to Klein-Gordon Equation and Schrodinger Equation, as well as limited-diffraction solutions to these equations in confined spaces are obtained. The relationship between the transformation that converts any solutions to an (-1)-dimensional wave equation to limited-diffraction solutions of an -dimensional equation and the Lorentz transformation is clarified and extended. The transformation is also applied to the Klein-Gordon Equation. In addition, applications of limited-diffraction beams are summarized.
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"abstract": "Limited-diffraction beams are a class of waves that may be localized in space\nand time. Theoretically, these beams are propagation invariant and can\npropagate to an infinite distance without spreading. In practice, when these\nbeams are produced with wave sources of a finite aperture and energy, they have\na very large depth of field, meaning that they can keep a small beam width over\na large distance. Because of this property, limited-diffraction beams may have\napplications in various areas such as medical imaging and tissue\ncharacterization. In this paper, fundamentals of limited-diffraction beams are\nreviewed and the studies of these beams are put into a unified theoretical\nframework. Theory of limited-diffraction beams is further developed. New\nlimited-diffraction solutions to Klein-Gordon Equation and Schrodinger\nEquation, as well as limited-diffraction solutions to these equations in\nconfined spaces are obtained. The relationship between the transformation that\nconverts any solutions to an (-1)-dimensional wave equation to\nlimited-diffraction solutions of an -dimensional equation and the Lorentz\ntransformation is clarified and extended. The transformation is also applied to\nthe Klein-Gordon Equation. In addition, applications of limited-diffraction\nbeams are summarized.",
"arxiv_id": "physics/0603190",
"authors": [
"Jian-yu Lu"
],
"categories": [
"physics.gen-ph",
"physics.med-ph"
],
"journal_ref": "Localized Waves, Editors: Hugo E. Hernandez-Figueroa, Michel\n Zamboni-Rached, and Erasmo Recami, Publisher: John Wiley \u0026 Sons, Inc., New\n Jersey, Chapter 4, pp. 97-128, 2008 (ISBN: 978-0-470-10885-7)",
"title": "Ultrasonic imaging with limited-diffraction beams",
"url": "https://arxiv.org/abs/physics/0603190"
},
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