By Topic

IEE Proceedings A - Physical Science, Measurement and Instrumentation, Management and Education - Reviews

Issue 2 • February 1987

Filter Results

Displaying Results 1 - 17 of 17
  • Medical imaging

    Publication Year: 1987
    IEEE is not the copyright holder of this material | PDF file iconPDF (147 KB)
    Freely Available from IEEE
  • Objectives of medical imaging

    Publication Year: 1987
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (498 KB)

    Central to the western model of medicine is the concept of specific identifiable diseases, and their identification is an essential prerequisite to treatment to secure the best prognosis. Modern radiological methods are powerful tools in assisting the clinician in his diagnostic endeavours, but, more than this, they provide vital information on the extent of spread of disease which guide the appli... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dirac, faraday, born and medical imaging

    Publication Year: 1987, Page(s):101 - 106
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (830 KB)

    Most modern medical imaging methods rely on the analysis and processing of acquired data to reconstruct a desired tomographic image, generally via digital methods. A unified view of these techniques is developed here, using classical approaches associated with Dirac, Faraday and Born. A formalism due to Dirac is shown to provide a unifying basis for standard reconstruction- from-projection algorit... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Conventional X-ray imaging

    Publication Year: 1987, Page(s):107 - 114
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1239 KB)

    The paper discusses conventional X-ray imaging in all its forms. From the X-ray source, with its continuous spectrum, through to scatter control and image intensification, both theoretical and practical problems are considered. Hospital X-ray departments are cost-conscious and so improvements in X-ray tube design, grids, rare-earth screens and films have all been forthcoming. The paper concludes w... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Digital X-ray imaging

    Publication Year: 1987, Page(s):115 - 125
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1583 KB)

    A brief rationale for the desirability of implementing digital X-ray imaging techniques is provided in the paper. The technology presently available or under development for actually producing digital X-ray data is described under two separate headings, namely: (a) imageintensifier/TV systems and (b) radiographic (filmreplacement) systems. The underlying design requirements for digital fluorograph... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A review of physical aspects of X-ray transmission computed tomography

    Publication Year: 1987, Page(s):126 - 135
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1763 KB)

    The physical aspects of X-ray transmission computed-tomography scanners are reviewed with particular emphasis on X-ray sources and detectors. Physical aspects have been interpreted widely to embrace the choice and specification of imaging geometry and corresponding reconstruction theory. The review pertains to both commercial production machines and special-purpose (generally one-off) developments... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Allowing for variable resolution and constant attenuation in SPECT

    Publication Year: 1987, Page(s):136 - 142
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1022 KB)

    By representing an image as a distribution of Gaussian blobs, due account is taken, for a single photon emission computed tomography (SPECT) system, of finite detector resolution (leading to spatially varying image resolution) and constant attenuation of the radiations on their passage through a body. A simple enhancement procedure is proposed. It is argued that the effects of variable attenuation... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Aspects off the engineering design of whole-body nuclear magnetic resonance machines

    Publication Year: 1987, Page(s):143 - 160
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2828 KB)

    Whole-body nuclear magnetic resonance (NMR) machines are being installed at a surprisingly rapid rate in hospitals worldwide. There they are seen as having an imaging sensitivity at least as good as that of CT X-ray scanners with additional capabilities for the display and measurement of flow and of noninvasive chemical analysis for the monitoring of metabolism. The engineering of such machines is... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radionuclide imaging

    Publication Year: 1987, Page(s):161 - 170
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1796 KB)

    In radionuclide imaging the gamma radiation emerging from a patient is measured to infer the distribution of radioactivity within the tissues. This can provide useful information on the structure and function of many different organs. The procedure is relatively simple and painless for the patient, but it inevitably entails a small radiation dose to the body from the radioactivity administered. In... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Microwave thermography for medical applications

    Publication Year: 1987, Page(s):171 - 174
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (606 KB)

    A scanning microwave thermograph has been built, operating in the band 9¿¿10 GHz, which produces a video display of the variations in the emission temperature of the human body. Image processing is incorporated in the instrument to reduce the effects of noise and antenna smoothing and also to assist in image analysis. Preliminary medical studies on a number of patients suffering from occlusive vas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A review of the display of combined images

    Publication Year: 1987, Page(s):175 - 178
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (920 KB)

    The potential and problems of the superimposition of medical images from different techniques is addressed. Examples of current work and methods of combining images from nuclear medicine and radiology are presented, with discussion of their usefulness. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ultrasonic imaging in medical diagnosis

    Publication Year: 1987, Page(s):179 - 187
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1624 KB)

    The use of ultrasound as an imaging technique for nondestructive visualisation in medical diagnosis has been under development since the late 1940s. In recent years, the resolution of images has improved markedly, and now ultrasound investigations are often the first imaging procedure that a patient encounters in hospital. The mode of operation of current scanners is described in this review, toge... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Deterministic approach towards ultrasound speckle reduction

    Publication Year: 1987, Page(s):188 - 192
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (781 KB)

    The realisation that speckle in an ultrasound pulse-echo image arises from destructive interference of the received echoes, allows a deterministic technique for marking the presence of the speckle artefact, within a single RF A-line. The method is based on an analysis of the behaviour of the instantaneous frequency (time derivative of the signal phase) of the echo waveform, and is developed in ter... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A clinical microwave thermography system

    Publication Year: 1987, Page(s):193 - 200
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (952 KB)

    Microwave thermography is the technique of observing the natural thermal radiation from the tissues of the body at centimetric wavelengths to obtain information about internal body temperature patterns. The ability of the technique to relatively directly obtain a measurement of body internal temperatures is the result of the relative transparency of body tissues to microwave radiation at the lower... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrical impedance imaging

    Publication Year: 1987, Page(s):201 - 210
    Cited by:  Papers (16)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1715 KB)

    Electrical impedance imaging is introduced on a descriptive and historical basis. The physical situation to which it applies is identified, and its representation as mathematical equations is stated. Emphasis is made of the assumptions in the derivation and solution of the equations. Techniques for synthesising data are outlined and the practical problems of measuring data are covered. Methods of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Image perception

    Publication Year: 1987, Page(s):211 - 224
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2378 KB)

    While it is not possible to specify in any general way how best to display clinical images, in recent years significant progress has been made in understanding the factors which determine the effectiveness of image presentation. The paper reviews the work on displaying medical images, in particular the relatively noisy images encountered in nuclear medicine and radiology. The need to present the r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Medical thermography

    Publication Year: 1987, Page(s):225 - 236
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2082 KB)

    Skin surface temperature distributions portrayed by infra-red imaging techniques can be used to identify areas of thermal abnormality, to monitor disease processes and to monitor the efficacy of treatment procedures. Technology, originally developed for military purposes, is now being utilised in medical imaging equipment. InSb and CdHgTe (CMT) detectors are used most frequently in these systems, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.