Considerations On The Falling Load Principle

Martin Braun

doi:10.1117/12.954571

25 March 1976 Considerations On The Falling Load Principle

Martin Braun

Proceedings Volume 0070, Application of Optical Instrumentation in Medicine IV; (1976) https://doi.org/10.1117/12.954571
Event: Application of Optical Instrumentation in Medicine, IV, 1975, Atlanta, United States

Abstract

Attempts to improve the resolution capability of an x-ray imaging system have to include the presence of the patient, particularly the effect of subject motion. From this it follows that the loading capability of the x-ray machine should be an integral part of the analysis and optimization of systems resolution. We have tried to quan-tify both resolution and load capacity and to merge them in a "figure of merit", which seems helpful in judging focal spot performance. A true falling load characteristic for the focal spot distribution as well as for the exposure load characteristic appears to give optimum performance in terms of systems resolution. With computer help, we have calculated the pertinent parameters, such as intensity, modulation transfer, load, and temperature as functions of spatial and temporal coordinates.

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Martin Braun "Considerations On The Falling Load Principle", Proc. SPIE 0070, Application of Optical Instrumentation in Medicine IV, (25 March 1976); https://doi.org/10.1117/12.954571

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KEYWORDS

Electron beams

X-rays

Medicine

Modulation transfer functions

Acquisition tracking and pointing

Iterative methods

Optical resolution

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