Digital ultrasound imaging techniques using vector sampling and raster line reconstruction

Ultrasonic Imaging

Volumn 3, Issue 1, 1981, Pages 83-107

  Gehlbach, Steve M ^a   Alvarez, Robert E ^a  

^a VARIAN MEDICAL SYSTEMS   (United States)

Author keywords

Digital signal processing; frequency conversion; phased array; quadrature; scan conversion; synthetic aperture; ultrasonic imaging

Indexed keywords

DIAGNOSIS; ECHOGRAPHY; METHODOLOGY; SIGNAL PROCESSING; THEORETICAL STUDY;

COMPUTERS; MODELS, STRUCTURAL; MODELS, THEORETICAL; SUPPORT, U.S. GOV'T, NON-P.H.S.; ULTRASONICS;

EID: 0019505525     PISSN: 01617346     EISSN: None     Source Type: Journal    
DOI: 10.1177/016173468100300104     Document Type: Article

References (13)

1. Corl P. D. Kino G. S. De Silet C. S. Grant P. M., A Digital Synthetic Focus Imaging System, in Acoustical Imaging, Vol. 8, Metherell A. F., ed. pp. 39-53 (Plenum Press, New York, NY, 1978).
2. Pridham R. G. Mucci R. A., Digital interpolation beamforming for low-pass and band-pass signals, Proc. IEEE 67, 904-919 (1979).
3. Pridham R. G. Mucci R. A., Shifted sideband beamforming, IEEE Trans. Acoust. Speech, Signal Processing ASSP-27, 713-722 (1979).
4. Dick M. L. Dick D. E. McLeod F. D. Kindig N. B., Ultrasonic Synthetic Aperture Imaging, in Acoustic Holography, Vol.7, Kessler L. W., ed., pp. 327-346 (Plenum Press, New York, NY, 1977).
5. Papoulis A., The Fourier Integral and its Applications, pp. 130-131, (McGraw-Hill, New York, NY, 1962).
6. Bracewell R. N., The Fourier Transform and its Applications, pp. 267-272 (McGraw-Hill, New York, NY, 1978).
7. We must keep in mind that fo is constrained to be within the occupied spectrum of s(t), and for most cases of interest also near the (arithmetic) center of the occupied spectrum. The mixer frequency f1 is completely arbitrary, and when it is outside the occupied spectrum, one is operating at an intermediate frequency. When we refer to fo = f1, we mean an intermediate frequency is not being used, and the signal is fully translated to baseband.
8. Macovski A., Ultrasonic imaging using arrays, Proc. IEEE 67, 484-495 (1979).
9. A more complex matched filter reconstruction as described in [4] could be used, but since it follows easily from these calculations and is not practical in a real-time instrument at present, we develop only the simple case for the pulse center.
10. Engeler W. E. Tiemann J. J., ultrasonic Imaging System, U. S. Patent No. 4,155,260 (1979).
11. Maslak S. H., Acoustic Imaging Apparatus, U. S. Patent No. 4,140,022 (1979).
12. Shafer R. W. Rabiner L. R., A digital signal processing approach to interpolation, Proc. IEEE 61, 692-720 (1973).
13. Keating P. N. Kopplemann R. F. Sawatari T. Steinberg R. F., Holographic Aperture Synthesis Via a Transmitter Array, in Acoustical Imaging, Vol. 6, Booth N., ed., pp. 485-506, (Plenum Press, New York, NY, 1975).