Evaluation Of Micro-Focal Spot X-Ray Tubes And Rare Earth Oxysulfide Intensifying Screens In Magnification Radiography

H. Eisenberg; M. Braun; B. Arnold; W. Holland; R. Gould

doi:10.1117/12.954288

1 May 1974 Evaluation Of Micro-Focal Spot X-Ray Tubes And Rare Earth Oxysulfide Intensifying Screens In Magnification Radiography

H. Eisenberg, M. Braun, B. Arnold, W. Holland, R. Gould

Author Affiliations +

Proceedings Volume 0056, Medical X-Ray Photo-Optical Systems Evaluation; (1974) https://doi.org/10.1117/12.954288
Event: Medical X-Ray Photo-Optical Systems Evaluation, 1974, Columbia, United States

Abstract

The results of some preliminary measurements of the modulation transfer functions of (1) micro-focal spots of prototype x-ray tubes and (2) rare-earth oxysulfide intensifying screens are presented. The micro-focus tubes when used in conjunction with the rare earth screen-film systems have sufficient output to stop biologic motion in most clinical examinations. Optimum magnification is arrived at by use of the "effective sampling aperture" as suggested by Wagner (Ref. 1). An optimized micro-focus-rare-earth system is then compared to a conventional system of similar speed using calcium tungstate screens and 0.3 mm focal spot. The results show that a considerable improvement in contrast transfer is obtainable with the new system. Supportative radiolpgical evidence is presented.

Citation Download Citation

H. Eisenberg, M. Braun, B. Arnold, W. Holland, and R. Gould "Evaluation Of Micro-Focal Spot X-Ray Tubes And Rare Earth Oxysulfide Intensifying Screens In Magnification Radiography", Proc. SPIE 0056, Medical X-Ray Photo-Optical Systems Evaluation, (1 May 1974); https://doi.org/10.1117/12.954288

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