20 April 2006 The method of analysis of joint space width measurement results: practical verification
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Proceedings Volume 6158, Lightmetry and Light and Optics in Biomedicine 2004; 61580N (2006) https://doi.org/10.1117/12.675793
Event: Lightmetry and Light and Optics in Biomedicine 2004, 2004, Warsaw, Poland
Abstract
The difficulties in accuracy of performed measurements assessment was appeared when author analyzed measurement results of joint space width on the basis of radiographs. It's followed mainly from accuracy of patient position at X-ray unit. So that to solve this problem author worked out methods of elimination measured data of patients for which variation of measurement results was highest (i.e. lowest repeatability of radiographs execution). In this way we can perform fewer radiographs for the others patients to decrease of mean standard deviation of measured data identified with measuring error. Author checked practical application of methods outlying observation reduction and innovative methods of elimination measured data with excess variance at independence as well as dependence of variables. Elaborated methods were verified on the basis of measurement results of knee-joint width space got from radiographs. Measurements were carried out by two methods: directly on the radiographs as well as indirectly on the digital images of radiographs. Results of examination confirmed legitimacy to using of elaborated methodology and measurement procedures. It's solved important problems from metrology, which have application in many medical departments, especially if it's hard to achieve reduction of random error by increase numbers of measurements. Radiology is such a discipline. There is the most essential to reduce ionizing radiation dose for patient during examinations.
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Grażyna Gilewska, Grażyna Gilewska, } "The method of analysis of joint space width measurement results: practical verification", Proc. SPIE 6158, Lightmetry and Light and Optics in Biomedicine 2004, 61580N (20 April 2006); doi: 10.1117/12.675793; https://doi.org/10.1117/12.675793
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