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Ventricle Boundary in CT : Partial Volume Effect and Local Thresholds
Joint Authors
Volkau, Ihar
Puspitasari, Fiftarina
Nowinski, Wieslaw L.
Source
International Journal of Biomedical Imaging
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-05-17
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
We present a mathematical frame to carry out segmentation of cerebrospinal fluid (CSF) of ventricular region in computed tomography (CT) images in the presence of partial volume effect (PVE).
First, the image histogram is fitted using the Gaussian mixture model (GMM).
Analyzing the GMM, we find global threshold based on parameters of distributions for CSF, and for the combined white and grey matter (WGM).
The parameters of distribution of PVE pixels on the boundary of ventricles are estimated by using a convolution operator.
These parameters are used to calculate local thresholds for boundary pixels by the analysis of contribution of the neighbor pixels intensities into a PVE pixel.
The method works even in the case of an almost unimodal histogram; it can be useful to analyze the parameters of PVE in the ground truth provided by the expert.
American Psychological Association (APA)
Volkau, Ihar& Puspitasari, Fiftarina& Nowinski, Wieslaw L.. 2010. Ventricle Boundary in CT : Partial Volume Effect and Local Thresholds. International Journal of Biomedical Imaging،Vol. 2010, no. 2010, pp.1-6.
https://search.emarefa.net/detail/BIM-489513
Modern Language Association (MLA)
Volkau, Ihar…[et al.]. Ventricle Boundary in CT : Partial Volume Effect and Local Thresholds. International Journal of Biomedical Imaging No. 2010 (2010), pp.1-6.
https://search.emarefa.net/detail/BIM-489513
American Medical Association (AMA)
Volkau, Ihar& Puspitasari, Fiftarina& Nowinski, Wieslaw L.. Ventricle Boundary in CT : Partial Volume Effect and Local Thresholds. International Journal of Biomedical Imaging. 2010. Vol. 2010, no. 2010, pp.1-6.
https://search.emarefa.net/detail/BIM-489513
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-489513