Calculation accuracy evaluation of quantitative parameters of overall perfusion assessment
DOI:
https://doi.org/10.15587/1729-4061.2015.55908Keywords:
accuracy evaluation of perfusion characteristics, overall perfusion assessment, tomographyAbstract
The problem of compliance of quantitative parameters of overall perfusion assessment according to tomographic studies with the real values of human hemodynamic parameters was considered. The existing software-algorithmic approaches to calculating the overall perfusion parameters by discretely presented time-concentration curves were analyzed. The effect of calculated parameters on the results of the obtained values of other parameters was investigated, the scheme of interdependence in the calculation of such parameters was formalized. The calculation accuracy evaluation of quantitative parameters of overall perfusion assessment by the reference values of the main hemodynamic parameters of ghost images was carried out. According to the correlation and linear regression analyses, the algorithm for the quantitative calculation of overall perfusion assessment with achieving maximum accuracy in the values of the obtained parameters under the computer and magnetic resonance tomography was formalized. The research results show the possibility of using the parameters of overall perfusion assessment on the same level with characteristics, based on physiological models and interpolated curves of dependence of contrast agent concentration on time.References
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