Pituitary Adenoma Segmentation

Details Pituitary Adenoma Segmentation Pituitary Adenoma Segmentation

2011-03-09

arxiv.org/abs/1103.1778v1

Computer Science

Computational Engineering, Finance, and Science

4 pages, 5 figures, BIOSIGNAL, Berlin, 2010

Scientific paper

Sellar tumors are approximately 10-15% among all intracranial neoplasms. The most common sellar lesion is the pituitary adenoma. Manual segmentation is a time-consuming process that can be shortened by using adequate algorithms. In this contribution, we present a segmentation method for pituitary adenoma. The method is based on an algorithm we developed recently in previous work where the novel segmentation scheme was successfully used for segmentation of glioblastoma multiforme and provided an average Dice Similarity Coefficient (DSC) of 77%. This scheme is used for automatic adenoma segmentation. In our experimental evaluation, neurosurgeons with strong experiences in the treatment of pituitary adenoma performed manual slice-by-slice segmentation of 10 magnetic resonance imaging (MRI) cases. Afterwards, the segmentations were compared with the segmentation results of the proposed method via the DSC. The average DSC for all data sets was 77.49% +/- 4.52%. Compared with a manual segmentation that took, on the average, 3.91 +/- 0.54 minutes, the overall segmentation in our implementation required less than 4 seconds.

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