Title Speeding-up the fitting of the model defining the ribs-bounded contour /
Authors Bilinskas, Mykolas Jurgis ; Dzemyda, Gintautas ; Sabaliauskas, Martynas
DOI 10.1515/acss-2017-0009
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Is Part of Applied computer systems / Ryga Technical University.. Warsaw : De Gruyter open. 2017, Vol. 21, no 1, p. 66-70.. ISSN 2255-8683. eISSN 2255-8691
Keywords [eng] Analytical models ; computed tomography ; least squares approximation ; medical diagnostic imaging
Abstract [eng] 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.
Published Warsaw : De Gruyter open
Type Journal article
Language English
Publication date 2017