Influence of anode and filter material on image quality and glandular dose for screen-film mammography

L. Desponds*, C. Depeursinge, M. Grecescu, C. Hessler, A. Samiri, J. F. Valley

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

The influence of anode and filter materials on the performance (image quality and dose) of a mammography system is investigated. The image quality is evaluated with the image quality index method. A computer simulation has been developed to calculate the physical parameters of the image quality index (contrast, resolution and noise) as well as the mean glandular dose. The calculations take into account the successive steps of the process: X-ray production, filtration, interaction with the test object, anti-scatter grid, interaction with the image detector (screen-film system). An excellent correlation is obtained between the results predicted by the model and those of experimental measurements, suggesting that the model may be used for the prediction of the performance of mammographic equipment. The experimental conclusions are confirmed: the use of a tungsten anode with a rhodium filter allows a dose reduction without a significant degradation of image quality. The computer program can also be used to simulate the influence of factors which are difficult to combine in practice, e.g., various anode and filter materials, monoenergetic X-rays, etc.

Original languageEnglish (US)
Article number002
Pages (from-to)1165-1182
Number of pages18
JournalPhysics in Medicine and Biology
Volume36
Issue number9
DOIs
StatePublished - 1991
Externally publishedYes

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Medicine(all)
  • Radiology Nuclear Medicine and imaging

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