Jing Lian1, Bin Shi2, Mingcong Li3, Ziwei Nan4, Yide Ma5. 1. School of Information Science and Engineering, Lanzhou University, Lanzhou, 730000, Gansu, China. 2. Equipment Management Department, Gansu Provincial Hospital, Lanzhou, 730000, Gansu, China. 3. Biology Department, Lanhua No.1 High School, Lanzhou, 730060, Gansu, China. 4. School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou, 730070, Gansu, China. 5. School of Information Science and Engineering, Lanzhou University, Lanzhou, 730000, Gansu, China. 1084275957@qq.com.
Abstract
PURPOSE: Since pre-processing and initial segmentation steps in medical images directly affect the final segmentation results of the regions of interesting, an automatic segmentation method of a parameter-adaptive pulse-coupled neural network is proposed to integrate the above-mentioned two segmentation steps into one. This method has a low computational complexity for different kinds of medical images and has a high segmentation precision. METHODS: The method comprises four steps. Firstly, an optimal histogram threshold is used to determine the parameter [Formula: see text] for different kinds of images. Secondly, we acquire the parameter [Formula: see text] according to a simplified pulse-coupled neural network (SPCNN). Thirdly, we redefine the parameter V of the SPCNN model by sub-intensity distribution range of firing pixels. Fourthly, we add an offset [Formula: see text] to improve initial segmentation precision. RESULTS: Compared with the state-of-the-art algorithms, the new method achieves a comparable performance by the experimental results from ultrasound images of the gallbladder and gallstones, magnetic resonance images of the left ventricle, and mammogram images of the left and the right breast, presenting the overall metric UM of 0.9845, CM of 0.8142, TM of 0.0726. CONCLUSION: The algorithm has a great potential to achieve the pre-processing and initial segmentation steps in various medical images. This is a premise for assisting physicians to detect and diagnose clinical cases.
PURPOSE: Since pre-processing and initial segmentation steps in medical images directly affect the final segmentation results of the regions of interesting, an automatic segmentation method of a parameter-adaptive pulse-coupled neural network is proposed to integrate the above-mentioned two segmentation steps into one. This method has a low computational complexity for different kinds of medical images and has a high segmentation precision. METHODS: The method comprises four steps. Firstly, an optimal histogram threshold is used to determine the parameter [Formula: see text] for different kinds of images. Secondly, we acquire the parameter [Formula: see text] according to a simplified pulse-coupled neural network (SPCNN). Thirdly, we redefine the parameter V of the SPCNN model by sub-intensity distribution range of firing pixels. Fourthly, we add an offset [Formula: see text] to improve initial segmentation precision. RESULTS: Compared with the state-of-the-art algorithms, the new method achieves a comparable performance by the experimental results from ultrasound images of the gallbladder and gallstones, magnetic resonance images of the left ventricle, and mammogram images of the left and the right breast, presenting the overall metric UM of 0.9845, CM of 0.8142, TM of 0.0726. CONCLUSION: The algorithm has a great potential to achieve the pre-processing and initial segmentation steps in various medical images. This is a premise for assisting physicians to detect and diagnose clinical cases.
Authors: Yurun Ma; Li Wang; Yide Ma; Min Dong; Shiqiang Du; Xiaoguang Sun Journal: Int J Comput Assist Radiol Surg Date: 2016-06-13 Impact factor: 2.924