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Microdensitometer system for microradiography

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Summary

A microdensitometer system for point measurements in areas down to a few square micrometers is described. The detector system is connected to an integrating digital voltmeter, constituting a very sensitive system. The digital output signals and a digital identification are registered on a recorder and on a tape punch, thus facilitating computer analysis.

The precision of the equipment varied from ∼1.1 per cent, for low signal levels, to ∼0.3 percent for the highest signal levels. Stray light, the only important source of systematic errors, was found to influence the output signal level. Concerning determinations of the densities, however, a variation of the order of 1 per cent was only obtained for small areas with densities differing from that of the background.

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Lindström, B., Philipson, B. Microdensitometer system for microradiography. Histochemie 17, 187–193 (1969). https://doi.org/10.1007/BF00309862

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  • DOI: https://doi.org/10.1007/BF00309862

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