Evaluation of plain-film digitizers: A comparison of different systems and models

H. Roehrig, W. J. Dallas, H. Blume, E. A. Krupinski, M. M. Rogulski, J. Fan, K. Gandhi

Research output: Contribution to journalArticlepeer-review


This paper describes the results of the comparison of 5 film digitizers designed for medical application to find an appropriate film digitizer for a project involving display of mammograms on a high performance CRT. Two of the digitizers were of the laser-scanning type while 3 were based on CCD technology. The comparison included estimates of linearity, uniformity, signal-to-noise ratio and spatial resolution in terms of the Modulation Transfer Function (MTF). The digitizers investigated show vastly different results. No system excelled in all performance parameters. A laser scanning digitizer was chosen for the planned display project because (1) it had the best linearity (down to OD 4); (2) it had the highest SNR at OD 4; (3) it had a comparatively good MTF.

Original languageEnglish (US)
Pages (from-to)694-703
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 2002

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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