liver segmentation from ct scan matlab code
#1

Hello,
I am Timea from Romania, and i need to segment the liver, and the liver tumor from a CT image in order to determine the type of tumor.
I need help on matlab code for liver segmentation (i was thinking of region growing) and some kind of threasholding or level based method for extracting the tumor. I only need to know the mean gray value of the tumor vs liver (is it lighter, darker or isoatenuant).
Could you help me with this?

Kind regards,
Timea NAGY
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#2
This study describes a new liver segmentation method for purpose of transplantation surgery as a treatment for liver tumors. Liver segmentation is not only the key process for volume computation but also fundamental for further processing to get more anatomy information for individual patient. Due to the low contrast, blurred edges, large variability in shape and complex context with clutter features surrounding the liver that characterize the liver CT images, it is a convoluted problem and still a challenge task to robustly and accurately segment the liver. In this paper, we overcome these difficulties with a novel variational model based on the idea of intensity probability distribution propagation and region appearance propagation with which we can focus on the target liver regardless of how complex the uninterested background is. This segmentation is based on combining a modified k-means segmentation method with a special localized contouring algorithm. In the segmentation process in order to divide the image, five separate regions are identified on the computerized tomography image frames. The merit of the proposed method lays in its potential to provide fast and accurate liver segmentation and 3-D rendering as well as in delineating tumor region(s), all with minimal user interaction.
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