Nonlinear Bessel Beam and Its Application in Tissue Harmonic Imaging

Author

Du, Hong-wei ; Feng, Huan-Qing

Author_Institution

Dept. of Electron. Sci. & Technol., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2009

fDate

26-28 Dec. 2009

Firstpage

3685

Lastpage

3688

Abstract

Bessel beam has a large depth of field and has been applied in high frame rate (HFR) ultrasonic imaging. In order to improve the spatial resolution in HFR imaging, a theoretical and numerical study for the second harmonic component of J₀ Bessel beam is presented, based on the nonlinear KZK equation. B-mode fundamental and second harmonic images of scatters in typical tissue-like medium are constructed using a computation imaging model. The result shows that the second harmonic of Bessel beam is limited diffracting and has a narrower mainlobe beyond the near-field. Harmonic imaging with Bessel beam can provide better spatial resolution than fundamental imaging. Thus an imaging method with high time and spatial resolution is feasible.

Keywords

acoustic signal processing; biomedical ultrasonics; harmonic generation; medical signal processing; nonlinear acoustics; ultrasonic imaging; B-mode fundamental images; Bessel beam second harmonic component; HFR imaging spatial resolution; HFR ultrasonic imaging; Khokhlov-Zabolotskaya-Kuznetsov equation; computational imaging model; high frame rate imaging; nonlinear Bessel beam; nonlinear KZK equation; second harmonic images; tissue harmonic imaging; tissue like medium; Absorption; Apertures; Computational modeling; Diffraction; Focusing; High-resolution imaging; Information science; Nonlinear equations; Spatial resolution; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Science and Engineering (ICISE), 2009 1st International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-4909-5

Type

conf

DOI

10.1109/ICISE.2009.786

Filename

5455716