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Computer-assisted echography: statistical analysis of A-mode video echograms obtained by tissue sampling

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Abstract

The A-mode video echograms of ophthalmological equipment are quantitatively analysed while using an online connection to a digital computer. A series of echograms is collected while the examiner carries out slight manual scanning movements with the transducer, thus performing a kind of statistical tissue sampling. The amplitude of the echoes is expressed as a percentage of the maximum display magnitude. The attenuation is estimated by a regression analysis while taking into account the amplifier gain curve of the equipment and is expressed in dB/mm tissue. The relative reflectivity of large structure boundaries is expressed in dB. The texture of tissue echograms is analysed by means of amplitude histograms.

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References

  • Bevington, P. R. (1969) Data reduction and error analysis for the physical sciences. McGraw-Hill, New York.

    Google Scholar 

  • Kervel van, S., Weil van de, J. M. andThijssen, J. M. A device for the display and adjustment of the amplifier gain curve of ultrasonic A-mode equipment. Submitted toUltrasonics.

  • Mountford, R. A. andWells, P. N. T. (1972) Ultrasonic liver scanning: the A-scan in the normal and cirrhosis.Phys. Med. Biol.,17, 261–269.

    Article  Google Scholar 

  • Oksala, A. (1962) About selective echography in some eye diseases.Acta Ophthalmol.,40, 466–474.

    Article  Google Scholar 

  • Ossonig, K. C. (1974) Quantitative echography—the basis of tissue differentiation.J. Clin. Ultrasound,2, 33–46.

    Google Scholar 

  • Poujol, J. (1974) Echographic diagnosis of tumors in ophthalmology. InUltrasonics in Medicine,de Vlieger,M.,White,D. N. andMcReady,V. R. (Eds.), Amsterdam, Excerpta Medica, 147–165.

    Google Scholar 

  • Thijssen, J. M. andVerbeek, A. M. (1980) Computer analysis of echograms from choroidal melanoma. In the Proceedings of The SIO UO 8 Symposium,Thijssen, J. M. andVerbeek, A. M. (Eds.), Doc. Ophthal. Proceedings Series Vol. 29, The Hague (in press).

  • Till, P. (1976) Solid tissue model for the standardization of the echo-ophthalmography 7200 MA (Kretztechnik).Doc. Ophthalmol.,46, 205–240.

    Article  Google Scholar 

  • Till, P. andOssoinig, K. C. (1975) Ten-year study on clinical echography in intraocular disease. InBibliotheca Ophthalmologica, No. 83,Streiff, E. B., (Ed.) Lausanne.

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Authors and Affiliations

  1. Institute of Ophthalmology, University of Nijmegen, Nijmegen, The Netherlands

    J. M. Thijssen, A. L. Bayer & M. Cloostermans

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  1. J. M. Thijssen
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  2. A. L. Bayer
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  3. M. Cloostermans
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Thijssen, J.M., Bayer, A.L. & Cloostermans, M. Computer-assisted echography: statistical analysis of A-mode video echograms obtained by tissue sampling. Med. Biol. Eng. Comput. 19, 437–442 (1981). https://doi.org/10.1007/BF02441309

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  • DOI: https://doi.org/10.1007/BF02441309

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