Annals of Biomedical Engineering

, Volume 6, Issue 3, pp 250–309 | Cite as

Evolution of instrumentation and techniques for the study of cardiovascular dynamics from the thirties to 1980, alza lecture, April 10, 1978

  • Earl H. Wood


Milestones in physiology are marked by development of new devices and techniques for dynamic measurements of bodily functions and many of the earliest contributions to instrumentation in all fields of science were made by biomedical scientists. As a result of developments since 1940 stimulated by needs to study the effects of environmental stresses encountered in aerial combat and for accurate diagnosis prior to cardiac surgery, it was possible by the late 1950s to measure practically all of the external functions of the heart and lungs. An unfufilled need still exists, however, for accurate dynamic measurements of the shape and dimensions of the myocardium required to assess the intrinsic status, i.e., the cardiac reserve of a given patient's myocardium.

A 28 X-ray source high-temporal resolution cylindrical-scanning computerized tomographic system is being fabricated to meet this need. This system, which will scan synchronously up to 250 parallel cross sections of the body over an axial range of 25 cm within 0.01 sec at a maximum rate of 60 scans/sec, promises to facilitate noninvasive studies of moving organ systems and to have dramatically beneficial effects on clinical diagnosis and health care.


Environmental Stress Maximum Rate Accurate Diagnosis Bodily Function Dynamic Measurement 
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Copyright information

© Academic Press, Inc. 1978

Authors and Affiliations

  • Earl H. Wood
    • 1
  1. 1.Biodynamics Research UnitMayo Medical SchoolRochester

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