| 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 |
| Full Text |
|
| 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 |
