Contrast enhancement of invasive ultrasound transducers using denoising wavelets to establish dynamic threshold and gain

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)597-598
Journal / PublicationAnnual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) - Proceedings
Volume17
Issue number1
Publication statusPublished - 1995
Externally publishedYes

Conference

TitleProceedings of the 1995 IEEE Engineering in Medicine and Biology 17th Annual Conference and 21st Canadian Medical and Biological Engineering Conference. Part 2 (of 2)
CityMontreal, Can
Period20 - 23 September 1995

Abstract

Next generation in-vivo ultrasound probes will in all likelihood be multiple frequency and may be capable eventually of volume acquisition. Recent advances in gas bubble contrast agents such as Albunex now make possible capillary imaging of the heart. Although previous gas bubble contrast agents could not pass through the lungs, and only allowed for right heart imaging, with recent instability problems improved it is now possible to image the left heart which is clinically more significant [1]. At present small invasive catheter based ultrasound probes are beginning to be developed [2]. This paper presents initial discussion on the issue and examines some practical considerations to perhaps exploiting the reduction in the dynamic gain requirements of such devices as a means to enhance dynamic contrast by dynamic thesholding. Using denoising wavelets we examine the change in specular information before and after threshold change and examine the contrast advantages of such a simple technique. We conclude that it may be possible to develop a dynamic threshold and gain control for the purposes of feature extraction.

Bibliographic Note

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Citation Format(s)

Contrast enhancement of invasive ultrasound transducers using denoising wavelets to establish dynamic threshold and gain. / Xiang, S. H.; Miller, A. G.; Zhang, Y. T.

In: Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) - Proceedings, Vol. 17, No. 1, 1995, p. 597-598.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review