Abstract
A system for Doppler ultrasound flow imaging and CW spectral analysis of the carotid artery is described. The system uses a 24 element linear array with the long axis aligned perpendicular to the axis of the artery. Alteration of the array aperture function allows either a narrow beam to be produced for flow imaging, or a beam as wide as the artery to be produced for CW spectral analysis. For flow imaging, a narrow beam produced by an eight element crystal group is swept across the artery by sequentially shifting the group along the array. The system is designed to image flow along a line of approximately 2 cm length. A two-dimensional map of blood flow projected onto the plane of the surface of the skin is obtained by moving the array along the vessel axis using a one-dimensional position sensor. The CW spectral analysis mode of operation uses the middle twelve elements to produce a uniform 4 mm wide beam at a depth of 4 cm. Initial results with a partially tested system are described.
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References
Reid, J.M., Spencer, M.P. and Davis, D.L., “Ultrasonic Doppler Imaging System”, pp. 1127–1235 in “Ultrasound in Medicine”., D.N. White and R. Brown (Eds.), Vol. 3B, Plenum Press, New York, 1977.
Curry, G.R. and White, D.N., “Color Coded Ultrasonic Differential Velocity Arterial Scanner (Echoflow),” Ultrasound Med. Biol., 4:27–35, 1978.
Kasai, C, Namekawa, K., Koyano, A., and Omoto, R. “Real-Time Two-Dimensional Blood Flow Imaging Using an Autocorrelation Technique,” IEEE Trans. Sonics Ultrason., SU-32:458–454, 1985.
Switzer, D.F., and Nanda, N.C., “Doppler Color Flow Mapping,” Ultrasound Med. Biol., 11:403–416, 1985.
Powis, P.L., “Angiodynography: A New Real-Time Look at the Vascular System,” Applied Radiology, 15:55–59, 1986.
Arenson, J.W., Cobbold, R.S.C., and Johnston, K.W., “Real-Time Two-Dimensional Blood Flow Imaging Using a Doppler Ultrasound Array”, pp. 529–538 in “Acoustic Imaging”, E.A. Ash and CR. Hill (Eds.), Vol. 12, Plenum Press, New York, 1982.
Cobbold, R.S.C., Veltink, P.H., and Johnston, K.W., “Influence of Beam Profile and Degree of Insonation on CW Doppler Ultrasound Spectrum and Mean Velocity”, IEEE Trans. Sonics Ultrason., SU-30:364–370, 1983.
Brown, P.M. and Johnston, K.W., “The Difficulty of Quantifying the severity of Carotid Stenoses”, Surgery, 92:468–473, 1982.
Douville, Y., Arenson, J.W., Johnston, K.W., Cobbold, R.S.C., and Kassam, M., “Critical Evaluation of Continuous Wave Doppler Probes for Carotid Studies”, J. Clin. Ultrasound, 11:83–90, 1983.
Arenson, J.W., Cobbold, R.S.C., and Johnston, K.W., “Computer Aided Design of Ultrasonic Imaging Arrays”, Digest 8th CMBES Conf., pp.162–163, 1980.
Mehi, J.I. An Ultrasound Array for Arterial Doppler Flow Imaging and Spectral Analysis, MASc. Thesis, University of Toronto, 1985.
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© 1987 Plenum Press, New York
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Mehi, J.I., Cobbold, R.S.C., Johnston, K.W., Royer, C. (1987). A Flow Imaging and CW Spectral Analysis System. In: Jones, H.W. (eds) Proceedings of the Fifteenth International Symposium, July 14–6, 1986. Acoustical Imaging, vol 15. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-5320-1_27
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DOI: https://doi.org/10.1007/978-1-4684-5320-1_27
Publisher Name: Springer, Boston, MA
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