Support Vector Machines in MR Images Segmentation

0398102 - ÚPT 2014 RIV SK eng C - Conference Paper (international conference)
Mikulka, J. - Bartušek, Karel - Dvořák, P.
Support Vector Machines in MR Images Segmentation.
Measurement 2013. Proceedings of the 9th International Conference on Measurement. Bratislava: Institute of Measurement Science SAS, 2013, s. 157-160. ISBN 978-80-969672-5-4.
[Measurement 2013. International Conference on Measurement /9./. Smolenice (SK), 27.05.2013-30.05.2013]
R&D Projects: GA ČR GAP102/12/1104; GA MŠMT ED0017/01/01
Institutional support: RVO:68081731
Keywords : perfusion analysis * brain tumor segmentation * data classification * support vector machines * multi-parametric segmentation
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

The problem most frequently encountered in the practical processing of medical images consists in the lack of instruments enabling machine evaluation of the images. A typical example of this situation is perfusion analysis of brain tumor types. The first and very significant step lies in the segmentation of individual parts of the brain tumor; after segmentation, the rate of penetration by the applied contrast agent is observed in the parts. The common method, in which a high error rate has to be considered, is to mark these tumor portions manually. The quality of brain tissue segmentation exerts significant influence on the quality of evaluation of perfusion parameters; consequently, the tumor type recognition is also influenced. The authors describe classification methods enabling the segmentation of images acquired via magnetic resonance tomography. During the edema segmentation, we obtained the following data: sensitivity 0.78+-0.09, specificity 1.00+-0.00, error rate 0.45+-0.24 %, surface overlap 69.36+-12.04 %, accuracy 99.55+-0.24 %, and surface difference -7.80+-9.13 %.
Permanent Link: http://hdl.handle.net/11104/0225647