Quantitative digital X-ray imaging using frozen hydrated and frozen dried tissue sections

Application of quantitative X-ray imaging to frozen hydrated tissue sections has presented a number of major problems including lack of a suitable algorithm which could deal effectively with mass loss due to radiation damage, problems of low characteristic X-ray signal to background ratios, and prov...

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Bibliographic Details
Published in:	Journal of microscopy (Oxford) Vol. 146; no. Pt 2; p. 169
Main Authors:	Saubermann, A J, Heyman, R V
Format:	Journal Article
Language:	English
Published:	England 01-05-1987
Subjects:	Animals Electron Probe Microanalysis - instrumentation Electron Probe Microanalysis - methods Freeze Drying Ganglia - ultrastructure Leeches Microscopy, Electron - methods Microscopy, Electron, Scanning - methods
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Summary:	Application of quantitative X-ray imaging to frozen hydrated tissue sections has presented a number of major problems including lack of a suitable algorithm which could deal effectively with mass loss due to radiation damage, problems of low characteristic X-ray signal to background ratios, and provide a means of analysis of the same location in both hydrated and dried states. This paper presents details of the application of our algorithm for analysis of frozen hydrated, then dried cryosections applied to quantitative X-ray imaging, which provides relatively high precision quantitative measurement of elemental content (related to both wet and dry weight) and water content of each pixel. This algorithm largely circumvents many of the problems of analysis of frozen hydrated tissue sections. Our algorithm for X-ray imaging obtains reasonably precise quantitative measurements coupled with morphological information by trading speed and image resolution.
ISSN:	0022-2720
DOI:	10.1111/j.1365-2818.1987.tb01338.x