<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The method for analysing transversal plane images from computer tomography scans is considered in the paper. This method allows not only approximating ribs-bounded contour but also evaluating patient rotation around the vertical axis during a scan. In this method, a mathematical model describing the ribs-bounded contour was created and the problem of approximation has been solved by finding the optimal parameters of the mathematical model using least-squares-type objective function. The local search has been per-formed using local descent by quasi-Newton methods. The benefits of analytical derivatives of the function are disclosed in the paper.</p></abstract>

The method for analysing transversal plane images from computer tomography scans is considered in the paper. This method allows not only approximating ribs-bounded contour but also evaluating patient rotation around the vertical axis during a scan. In this method, a mathematical model describing the ribs-bounded contour was created and the problem of approximation has been solved by finding the optimal parameters of the mathematical model using least-squares-type objective function. The local search has been per-formed using local descent by quasi-Newton methods. The benefits of analytical derivatives of the function are disclosed in the paper.

Speeding-up the Fitting of the Model Defining the Ribs-bounded Contour

Applied Computer Systems

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Speeding-up the Fitting of the Model Defining the Ribs-bounded Contour"}

The method for analysing transversal plane images from computer tomography scans is considered in the paper. This method allows not only approximating...

Speeding-up the Fitting of the Model Defining the Ribs-bounded Contour

Published Online: Jun 13, 2017

Page range: 66 - 70

DOI: https://doi.org/10.1515/acss-2017-0009

Keywords
Analytical models, computed tomography, least squares approximation, medical diagnostic imaging

© Riga Technical University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Speeding-up the Fitting of the Model Defining the Ribs-bounded Contour

Published Online: Jun 13, 2017

Page range: 66 - 70

DOI: https://doi.org/10.1515/acss-2017-0009

KeywordsAnalytical models, computed tomography, least squares approximation, medical diagnostic imaging

© Riga Technical University

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Analytical models, computed tomography, least squares approximation, medical diagnostic imaging