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IEEE Engineering in Medicine and Biology Magazine

Issue 5 • Sep/Oct 1995

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Displaying Results 1 - 13 of 13
  • Effect of wavelet bases on compressing digital mammograms

    Publication Year: 1995, Page(s):570 - 577
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1000 KB)

    The purposes of this paper are four-fold: (a) develop a variety of wavelet methods, including standard, hyperbolic, and adaptive wavelet bases, for the compression of high-resolution digital mammograms, (b) apply different levels of compression to the images and determine the dependence of the information loss on the compression ratio, (c) determine qualitatively the types of artifacts and errors ... View full abstract»

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  • Engineering and the law: the False Claims Act and scientific misconduct

    Publication Year: 1995, Page(s):652 - 654
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    In previous articles, we have discussed the investigation and punishment of misbehaving scientists by the Office of the Inspector General (OIG) of the Department of Health and Human Services. While these were often characterized by the “Alice in Wonderland” notion of punishment before verdict, the actions of the Appeals Boards in overturning several egregious claims was heartening to m... View full abstract»

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  • Applying wavelets to mammograms

    Publication Year: 1995, Page(s):551 - 560
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1764 KB)

    This article briefly reviews the challenges faced as technology moves toward digital mammography, presents a necessarily brief overview of multiresolution analysis, and finally, gives current and future applications of wavelets to several areas of mammography. Topics covered include data compression and teleradiology, feature enhancement and classification, wavelets, fractals and texture, and de-n... View full abstract»

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  • Image perception and enhancement for the visually impaired

    Publication Year: 1995, Page(s):594 - 602
    Cited by:  Papers (6)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1236 KB)

    Wavelets have been used extensively as a method of extracting information contained in images and even in modeling human physiological data processing. Wavelet implementation for image processing parallels the analysis done by Peli concerning image enhancement and human perception. In this article, wavelets were used to provide a new image enhancement procedure by manipulating the decomposition de... View full abstract»

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  • Adapted waveform encoding for magnetic resonance imaging

    Publication Year: 1995, Page(s):621 - 638
    Cited by:  Papers (8)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1928 KB)

    Magnetic resonance imaging is a very flexible modality; the images produced depend critically on the values of many parameters. We have presented adapted waveform encoding as a tool for the intelligent utilization of this flexibility in several specific imaging tasks. We have seen that waveform encoding can be implemented with existing scanners, and have analyzed performance with regard to several... View full abstract»

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  • Adapted waveform “de-noising” for medical signals and images

    Publication Year: 1995, Page(s):578 - 586
    Cited by:  Papers (40)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1288 KB)

    Our goal is to describe tools for adapting methods of analysis to various tasks occurring in harmonic and numerical analysis and signal processing. By choosing an orthonormal basis, in which space and frequency are suitably localized, one can achieve both understanding of structure and efficiency in computation. In fact, the search for computational efficiency is intimately related to efficiency i... View full abstract»

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  • Medical electricity. III. Faradism

    Publication Year: 1995, Page(s):655 - 656
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    Discusses the development of medical electricity with examples of a medical magneto from Sherwood, Joseph Henry's early medical coil, Sherwood's rotary magnetic machine, Sherwood's treatment for curvature of the spine, and Duchenne stimulating the muscles of the hand with his perfected medical coil View full abstract»

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  • Computer assisted diagnosis for digital mammography

    Publication Year: 1995, Page(s):561 - 569
    Cited by:  Papers (36)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1056 KB)

    This article describes the application of wavelet transform for image enhancement in medical imaging. The initial clinical application is the enhancement of microcalcification clusters (MCCs) in digitized mammograms to improve both their visualization and their detection using computer assisted diagnostic (CAD) methods. The potential universal application for improved visual interpretation of medi... View full abstract»

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  • Registration and statistical analysis of PET images using the wavelet transform

    Publication Year: 1995, Page(s):603 - 611
    Cited by:  Papers (22)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1216 KB)

    We have described a general procedure for the processing and analysis of PET data. We have used the multiresolution framework of the wavelet transform to derive new solutions for the two main processing steps. The first task was to align the various brain images using a general affine deformation model. Our registration procedure uses a continuous polynomial spline image model and takes advantage ... View full abstract»

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  • Compressing images with wavelet/subband coding

    Publication Year: 1995, Page(s):639 - 646
    Cited by:  Papers (12)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1224 KB)

    We have developed software modules (both stand-alone and in the biomedical image analysis and display package ANALYZE) that perform wavelet-based compression on both 2-D and 3-D gray scale images. We present examples of such compression on a variety of medical images, and comparisons with JPEG and other compression schemes. We also show examples of the improvements gained by true 3-D compression o... View full abstract»

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  • Wavelets for contrast enhancement of digital mammography

    Publication Year: 1995, Page(s):536 - 550
    Cited by:  Papers (122)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1684 KB)

    Multiresolution representations provided an adaptive mechanism for the local emphasis of features of importance to mammography. In general, improvements in image contrast for multiscale image processing algorithms were superior to those obtained using existing competitive algorithms. These initial results are encouraging and suggest that wavelet based image processing algorithms could play an impo... View full abstract»

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  • Applying wavelet transforms with arithmetic coding to radiological image compression

    Publication Year: 1995, Page(s):587 - 593
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB)

    Radiological archives need the images to be compressed at a moderate compression ratio between 10:1 to 20:1 while retaining good diagnostic quality. We have developed a compression algorithm based on discrete wavelet transforms (DWTs) and arithmetic coding (AC) that satisfies those requirements. This new method is superior to the previously developed full frame discrete cosine transform (FFDCT) me... View full abstract»

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  • Stabilized inversion for limited angle tomography

    Publication Year: 1995, Page(s):612 - 620
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (916 KB)

    Many problems in applied mathematics involve recovering a function f from measurements of Lf, where L is a known operator. We study the recovery of a function from limited knowledge of its Fourier transform. The inversion of a compact operator L (for limited data) is considered from a discrete signal processing perspective. In this context, the continuous operator L is naturally viewed as the limi... View full abstract»

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Aims & Scope

IEEE Engineering in Medicine and Biology Magazine contains articles on current technologies and methods used in biomedical and clinical engineering.

 

This Magazine ceased publication in 2010. The current retitled publication is IEEE Pulse.

Full Aims & Scope