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Proceedings Paper

The algorithm study for using the back propagation neural network in CT image segmentation
Author(s): Peng Zhang; Jie Liu; Chen Chen; Ying Qi Li
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Paper Abstract

Back propagation neural network(BP neural network) is a type of multi-layer feed forward network which spread positively, while the error spread backwardly. Since BP network has advantages in learning and storing the mapping between a large number of input and output layers without complex mathematical equations to describe the mapping relationship, it is most widely used. BP can iteratively compute the weight coefficients and thresholds of the network based on the training and back propagation of samples, which can minimize the error sum of squares of the network.

Since the boundary of the computed tomography (CT) heart images is usually discontinuous, and it exist large changes in the volume and boundary of heart images, The conventional segmentation such as region growing and watershed algorithm can’t achieve satisfactory results. Meanwhile, there are large differences between the diastolic and systolic images. The conventional methods can’t accurately classify the two cases.

In this paper, we introduced BP to handle the segmentation of heart images. We segmented a large amount of CT images artificially to obtain the samples, and the BP network was trained based on these samples. To acquire the appropriate BP network for the segmentation of heart images, we normalized the heart images, and extract the gray-level information of the heart. Then the boundary of the images was input into the network to compare the differences between the theoretical output and the actual output, and we reinput the errors into the BP network to modify the weight coefficients of layers. Through a large amount of training, the BP network tend to be stable, and the weight coefficients of layers can be determined, which means the relationship between the CT images and the boundary of heart.

Paper Details

Date Published: 5 January 2017
PDF: 4 pages
Proc. SPIE 10245, International Conference on Innovative Optical Health Science, 102450B (5 January 2017); doi: 10.1117/12.2267070
Show Author Affiliations
Peng Zhang, Beijing Jiaotong Univ. (China)
Jie Liu, Beijing Jiaotong Univ. (China)
Chen Chen, Beijing Jiaotong Univ. (China)
Ying Qi Li, Beijing Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 10245:
International Conference on Innovative Optical Health Science
Xingde Li; Qingming Luo, Editor(s)

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