An Advanced Technique for Volumetric Analysis

An accurate segmentation is critical, especially when the tumor morphological changes remain subtle, irregular and difficult to assess by clinical examination. This quantitative measurement depends on the accuracy of the segmentation method used. The undesired partial volume effect, which lies on a boundary between a high intensity region and low intensity region, makes unerring boundary determination a difficult task. A new approach to segmentation is proposed that removes the adverse effect on the boundary, which is unwanted especially from the point of view of volume rendering. This approach gives more accurate boundary detection and holes filling after segmentation. A semi-automatic calculation of volumetric size of brain tumor has been implemented in this approach. A comparative analysis of manual, seeded region growing and this advance approach shows more accurate and better performance for 3D volume measurements. This method is tested by two patients of different tumor type and shape, and better results are reported.

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