A method is presented for improving the lateral resolution of diagnostic B-scan images. Wiener filtering is applied on sequences of A-scan echo amplitudes acquired during B-scanning, using a simple scanning action. The first applications to clinical B-scan data show an improvement in the image quality. The filtered images obtained by this technique may provide an improvement in the performance of pattern recognition methods on medical ultrasonic image data.
FatemiM.KakA. C., Ultrasonic B-scan imaging: theory of image formation and a technique for restoration, Ultrasonic Imaging2, 1–47 (1980).
2.
HundtE. E.TrautenbergE. A., Digital processing of ultrasonic data by deconvolution, IEEE Trans. Sonics UltrasonicsSU-27249–252 (1980).
3.
VollmanW., Resolution enhancement of ultrasonic B-scan images by deconvolution, IEEE Trans. Sonics UltrasonicsSU-2978–83 (1982).
4.
PapoulisA.BeretskyI., Improvement of Range Resolution of a Pulse-echo System, in Ultrasound in Medicine, Vol. 3B, WhiteD.BrownR. E., eds., pp. 1613–1627, (Plenum Press, New York, 1977).
RosenfeldA.KakA. C., Digital Picture Processing, Ch. 7 (Academic Press, New York, 1976).
7.
BerglandG. D., A guided tour of the fast Fourier transform, IEEE Spectrum6, 41–52 (1969).
8.
WellsP. N. T., Biomedical Ultrasonics (Academic Press, London, 1977).
9.
FarrellE. J., Processing Limitations of Ultrasonic Image Reconstruction, in 1978 IEEE Conf. on Pattern Recognition and Image Processing, pp. 8–15 (IEEE Cat. No. 78CH 1318-5C).
10.
AndrewsH. C.HuntB. R., Image Restoration, (Prentice Hall, Inc., New Jersey, 1977).