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The paper aims to present a method of obtaining quantitative information from X-rays based on the shades of grey. Relative shades of grey in radiographs are obtained due to different acquisition parameters (tube voltage, tube current and exposure time) and material type and thickness. For this method, samples made from the same material, but with different thickness, were used to create a calibration curve based on the variable grey values obtained as a result of thickness variation. To be able to create a data base for future uses, the chemical components of the sample material must be known, for this purpose a complementary elemental analysis technique, such as XRF (X-Ray Fluorescence Spectroscopy) or LIBS (Laser Induced Breakdown Spectroscopy) can be applied..
Grey shades, Thickness, Cultural heritage.
A. CHELMUS, R. RADVAN, L. GHERVASE, Corroborated X-ray imaging and elemental analysis for obtaining quantitative information from radiographs, Optoelectronics and Advanced Materials - Rapid Communications, 12, 5-6, May-June 2018, pp.314-318 (2018).
Submitted at: Dec. 4, 2017
Accepted at: June 7, 2018