Angular Spectrum Filtering of Parasitic Images Introduced by the Spatial Sampling of Acoustical Images

  • C. Bruneel
  • B. Delannoy
  • R. Torguet
  • E. Bridoux
  • J. M. Rouvaen
Part of the Acoustical Imaging book series (ACIM, volume 8)


The power level of the acoustic echoes used in acoustical imaging systems is very low. The signal processing is therefore eased by sampling the reflected acoustic field with a receiving piezoelectric transducer array before subsequent amplification. This spatial sampling introduces parasitic images. By filtering the most inclined part of the angular spectrum, the power level of these ghosts may be severely reduced. A parallel is drawn between the present case and the situation arising in grating optics and the results of this analysis are well supported by the experimental findings.


Acoustic Field Spatial Sampling Transducer Array Filling Ratio Fresnel Zone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    N.Bom, CT Lancee and J. Honkoop “Ultrasonic viewer for cross sectionnal analysis of moving cardiac structures”, Bio-med eng 6, 500, 1971.Google Scholar
  2. 2.
    P. Alais, M. Fink “Fresnel zone focussing of linear arrays applied to B and C echography” Acoustical Holography and Imaging Vol. 7, Chicago 1976.Google Scholar
  3. 3.
    M. Berson, A. Roncin, L. Pourcelot “Appareil multitransducteur à focalisation dynamique”, S.F.A.U.M.B. Paris 1977.Google Scholar
  4. 4.
    JC Somer “Phased array systems”, Symposium on echocardiography Rotterdam June 1977 Google Scholar
  5. 5.
    E.B. Miller, F.L. Thurstone “Linear ultrasonic array design for echosonography”, J. Acoust. Soc. Am, Vol. 61, N° 6, June 1977.Google Scholar
  6. 6.
    R. Torguet, C. Bruneel, E. Bridoux, JM. Rouvaen and B. Nongaillard, Acoustical Holography and Imaging Vol. 7, Chicago 1976.Google Scholar
  7. 7.
    C. Bruneel, R. Torguet, E. Bridoux, JM. Rouvaen, B. Delannoy and M. Moriamez, I.E.E.E. Ultrasonic Symposium, Phoenix, Oct. 1977.Google Scholar
  8. 8.
    C. Bruneel, B. Nongaillard, R. Torguet, E. Bridoux, JM Rouvaen Ultrasonics Nov. 1977, 263–264.Google Scholar
  9. 9.
    C. Bruneel - thèse de doctorat (1978).Google Scholar
  10. 10.
    B. Delannoy, R. Torguet, C. Bruneel, E. Bridoux, JM. Rouvaen and H. Lasota “Acoustical image reconstruction using parallel processing analogical electronic systems” to be published. J.A.P.Google Scholar
  11. 11.
    C. Bruneel, E. Bridoux, B. Delannoy, B. Nongaillard, J.M. Rouvaen and R. Torguet, J.A.P., Vol. 49, N° 2, 569–573, 1978.Google Scholar
  12. 12.
    J.W. Goodman, Introduction to Fourier Optics. Mc Graw Hill, New York 1968.Google Scholar
  13. 13.
    M. Born, E. Wolf, Principles of Optics,(third Edition) Pergamon Press 1965.Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • C. Bruneel
    • 1
  • B. Delannoy
    • 1
  • R. Torguet
    • 1
  • E. Bridoux
    • 1
  • J. M. Rouvaen
    • 1
  1. 1.Centre Universitaire de ValenciennesValenciennes CédexFrance

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