Semi-Automatic Image Segmentation for Volumetric Visualization of Pelvis CT Scan-Images

• Main Authors: Suprijanto Suprijanto, Farida Muchtadi, Irwan Setiawan
• Format: Article
• Language: English
• Published: Universitas Indonesia 2010-10-01
• Series: Makara Journal of Technology
• Subjects: active contour, image segmentation, multi slice ct images, pelvis bones, volumetric visualization
• Online Access: http://journal.ui.ac.id/technology/journal/article/view/162

<p>The current&nbsp;development of computerized tomography (CT) has enable us to obtain cross sectional image using multi slicing&nbsp;techniques in an order of few seconds. The obtained images represent several tissue structures on cross section slice&nbsp;being imaged. One challenge to help diagnosis using CT images is extracting an anatomic structure of interest using a&nbsp;method of image segmentation and volumetric visualization with the assistance of computers. In case of volumetric&nbsp;visualization of pelvis bones extracted from multi-slice CT images, whole images which are containing part of pelvis&nbsp;bone structures must be segmented. In this research, an image segmentation technique based on active contour is&nbsp;implemented for semi-automatic multi slice image segmentation. Image segmentation steps are initialized with a define&nbsp;model of 2D curve on the first slice image manually. Next, its model curve is deformed to reach the final result of 2D&nbsp;curve that fits to boundary edges of pelvis bone image. The final result of 2D curve on previous slice image was used as&nbsp;an initialization model of 2D curve on the next slice images. This process will continue until the final slice image. This&nbsp;segmentation method was compared with the segmentation method based on threshold from homogenous intensity&nbsp;distribution and manual segmentation method. Quantitative analysis from the results of segmentation on each slice and&nbsp;qualitative analysis on the representation of volumetric visualization are performed in this research.</p>