搜索

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

基于胶囊内窥镜的胃部肿瘤检测方法

陈功 张业荣

引用本文:
Citation:

基于胶囊内窥镜的胃部肿瘤检测方法

陈功, 张业荣

A method of detecting stomach tumour based on capsule endoscopy

Chen Gong, Zhang Ye-Rong
PDF
导出引用
  • 为准确快速地检测胃部肿瘤,提出将信号发射源放置于胶囊内窥镜中,运用时域有限差分法建立胃部的全电磁场模拟模型.首先通过该电磁场模型产生精确的人体胃部雷达数据,然后将雷达仿真数据代入BP(后向投影)算法中进行电磁逆散射计算成像.成像算法必须考虑人体中各个组织器官对电磁波传播的影响:电磁波在穿越人体时会有反射、折射和漫射现象,传播速率减慢,所携带的能量也有所减弱,这些因素最终会导致像的偏移,乃至产生虚像.通过迭代法算出准确的电磁波传播路径,对成像算法中的时间元素进行修正,可以有效地抑制像的偏移.结果证明:基于胶囊内窥镜的超宽带雷达能准确地呈现二维胃部模型中的肿瘤的位置和尺寸.
    In order to solve the problems of rapidly recognizing the shapes of the tumour in the stomach, a new kind of capsule endoscopy with through-body radar is utilized for the first time. Finite difference time domain method is used to establish an electromagnetic simulation model of stomach. After being swallowed by a patient, the capsule which consists of the radar moves through esophagus and stomach. Finally it drains out of the body by the self peristalsis of the human GI tract. During this time, the radar is used to transmit accurate radar data of human stomach. Then we will carry out electromagnetic inverse scattering imaging by back projection algorithm with the radar data. The algorithm must consider the influence of various tissues in the human body: the attenuation of the signal strength of electromagnetic waves, the decrease in speed and the refraction due to the different permittivities between the different organs of the body. These factors will eventually lead to image offset, and even generating a virtual image. It is effective to refrain the displacement of image with modifying the time element of the imaging algorithm by iteration. It is shown that ultra-wideband radar built-in capsule endoscopy can track and locate targets in the human's stomach.
      通信作者: 张业荣, Zhangyr@njupt.edu.cn
    • 基金项目: 南京邮电大学校引进人才项目(批准号:NY213021)和南京邮电大学校项目(批准号:NY214047)资助的课题.
      Corresponding author: Zhang Ye-Rong, Zhangyr@njupt.edu.cn
    • Funds: Project supported by the Nanjing University of Posts and Telecommunications Foundation of China (Grant No. NY213021), and Nanjing University of Posts and Telecommunications Foundation of China (Grant No. NY214047).
    [1]

    Liu G D 2011 Ph. D. Dissertation (Nanjing: Nanjing University of Posts and Telecommunications) (in Chinese) [刘广东2011博士学位论(南京: 南京邮电大学)]

    [2]

    Winters D W, Shea J D, Kosmas P, Veen B D, Hagness S C 2009 IEEE Trans. Med. Imag. 28 969

    [3]

    Yan G Z 2010 Ph. D. Dissertation (Shanghai: Shanghai Jiao Tong University) (in Chinese) [颜国正2010博士学位论文(上海: 上海交通大学)]

    [4]

    Li C Y, Zhang B L, Chen C X 2008 J. Zhejiang Univ. 9 857

    [5]

    Ge D B, Yan Y B 2005 Finite-Difference Time-Domain Method for Electromagneitc Waves (2nd Ed.) (Xi'an: Xidian University Press) (in Chinese) [葛德彪, 闫玉波2005电磁波时域有限差分方法(第二版) (西安: 西安电子科技大学出版社)]

    [6]

    Hagness S C, Taflove A, Bridges J E 1998 IEEE Trans. Biomed. Engineer. 45 1470

    [7]

    Fang Q Q, Meaney P M, Paulsen K D 2010 IEEE Trans. Antennas Propag. 58 449

    [8]

    Chew W C, Wang Y M 1990 IEEE Trans. Med. Imag. 9 218

    [9]

    Cui T J, Chew W C, Aydiner A A, Chen S Y 2001 IEEE Trans. Geosci. Remote Sens. 39 339

    [10]

    Soldovieri F, Solimene R 2007 IEEE Geosci. Remote Sens. Lett. 4 513

    [11]

    Wang F F, Zhang Y R 2012 Acta Phys. Sin. 61 084101 (in Chinese) [王芳芳, 张业荣2012物理学报61 084101]

    [12]

    Wei B, Li X Y, Wang F, Ge D B 2009 Acta Phys. Sin. 58 6174 (in Chinese) [魏兵, 李小勇, 王飞, 葛德彪2009物理学报58 6174]

    [13]

    Wang F F, Zhang Y R 2010 Chin. J. Radio 25 569(in Chinese) [王芳芳, 张业荣2010电波科学学报25 569]

    [14]

    Wang F F 2012 Ph. D. Dissertation (Nanjing: Nanjing University of Posts and Telecommunications) (in Chinese) [王芳芳2012博士学位论(南京: 南京邮电大学)]

    [15]

    Liu G D, Zhang Y R 2010 Acta Phys. Sin. 59 6969 (in Chinese) [刘广东, 张业荣2010物理学报59 6969]

    [16]

    Zhang H M, Zhang Y R, Wang F F 2015 Chin. J. Radio 30 153(in Chinese) [张华美, 张业荣, 王芳芳2015电波科学学报 30 153]

  • [1]

    Liu G D 2011 Ph. D. Dissertation (Nanjing: Nanjing University of Posts and Telecommunications) (in Chinese) [刘广东2011博士学位论(南京: 南京邮电大学)]

    [2]

    Winters D W, Shea J D, Kosmas P, Veen B D, Hagness S C 2009 IEEE Trans. Med. Imag. 28 969

    [3]

    Yan G Z 2010 Ph. D. Dissertation (Shanghai: Shanghai Jiao Tong University) (in Chinese) [颜国正2010博士学位论文(上海: 上海交通大学)]

    [4]

    Li C Y, Zhang B L, Chen C X 2008 J. Zhejiang Univ. 9 857

    [5]

    Ge D B, Yan Y B 2005 Finite-Difference Time-Domain Method for Electromagneitc Waves (2nd Ed.) (Xi'an: Xidian University Press) (in Chinese) [葛德彪, 闫玉波2005电磁波时域有限差分方法(第二版) (西安: 西安电子科技大学出版社)]

    [6]

    Hagness S C, Taflove A, Bridges J E 1998 IEEE Trans. Biomed. Engineer. 45 1470

    [7]

    Fang Q Q, Meaney P M, Paulsen K D 2010 IEEE Trans. Antennas Propag. 58 449

    [8]

    Chew W C, Wang Y M 1990 IEEE Trans. Med. Imag. 9 218

    [9]

    Cui T J, Chew W C, Aydiner A A, Chen S Y 2001 IEEE Trans. Geosci. Remote Sens. 39 339

    [10]

    Soldovieri F, Solimene R 2007 IEEE Geosci. Remote Sens. Lett. 4 513

    [11]

    Wang F F, Zhang Y R 2012 Acta Phys. Sin. 61 084101 (in Chinese) [王芳芳, 张业荣2012物理学报61 084101]

    [12]

    Wei B, Li X Y, Wang F, Ge D B 2009 Acta Phys. Sin. 58 6174 (in Chinese) [魏兵, 李小勇, 王飞, 葛德彪2009物理学报58 6174]

    [13]

    Wang F F, Zhang Y R 2010 Chin. J. Radio 25 569(in Chinese) [王芳芳, 张业荣2010电波科学学报25 569]

    [14]

    Wang F F 2012 Ph. D. Dissertation (Nanjing: Nanjing University of Posts and Telecommunications) (in Chinese) [王芳芳2012博士学位论(南京: 南京邮电大学)]

    [15]

    Liu G D, Zhang Y R 2010 Acta Phys. Sin. 59 6969 (in Chinese) [刘广东, 张业荣2010物理学报59 6969]

    [16]

    Zhang H M, Zhang Y R, Wang F F 2015 Chin. J. Radio 30 153(in Chinese) [张华美, 张业荣, 王芳芳2015电波科学学报 30 153]

  • [1] 冯乃星, 王欢, 朱子贤, 董纯志, 李宏杨, 张玉贤, 杨利霞, 黄志祥. 基于极限梯度提升的完美匹配单层智能算法实现航空瞬变电磁问题高效吸收. 物理学报, 2024, 73(6): 065201. doi: 10.7498/aps.73.20231724
    [2] 何欣波, 魏兵. 基于悬挂变量的显式无条件稳定FDTD亚网格算法. 物理学报, 2024, 0(0): . doi: 10.7498/aps.73.20231813
    [3] 杨红卫, 孟珊珊, 高冉冉, 彭硕. 光子晶体传输特性的时域精细积分法分析. 物理学报, 2017, 66(8): 084101. doi: 10.7498/aps.66.084101
    [4] 王飞, 魏兵, 杨谦, 李林茜. 基于Newmark算法的任意磁化方向铁氧体电磁散射时域有限差分分析. 物理学报, 2014, 63(16): 164101. doi: 10.7498/aps.63.164101
    [5] 刘广东, 张开银. 二维电磁逆散射问题的时域高斯-牛顿反演算法. 物理学报, 2014, 63(3): 034102. doi: 10.7498/aps.63.034102
    [6] 陈思, 赵惠昌, 张淑宁, 陈勇. 基于dechirp弹载SAR的改进后向投影算法. 物理学报, 2013, 62(21): 218405. doi: 10.7498/aps.62.218405
    [7] 岳庆炀, 孔凡敏, 李康, 赵佳. 基于缺陷光子晶体结构的GaN基发光二极管光提取效率的有关研究. 物理学报, 2012, 61(20): 208502. doi: 10.7498/aps.61.208502
    [8] 颛孙旭, 马西奎. 一种适用于任意阶空间差分时域有限差分方法的色散介质通用吸收边界条件算法. 物理学报, 2012, 61(11): 110206. doi: 10.7498/aps.61.110206
    [9] 刘广东, 张业荣. 乳腺癌检测的三维微波热声成像技术. 物理学报, 2011, 60(7): 074303. doi: 10.7498/aps.60.074303
    [10] 刘广东, 张业荣. 二维有耗色散介质的时域逆散射方法. 物理学报, 2010, 59(10): 6969-6979. doi: 10.7498/aps.59.6969
    [11] 魏兵, 董宇航, 王飞, 李存志. 基于移位算子时域有限差分的色散薄层节点修正算法. 物理学报, 2010, 59(4): 2443-2450. doi: 10.7498/aps.59.2443
    [12] 魏兵, 李小勇, 王飞, 葛德彪. 一种色散介质FDTD通用吸收边界. 物理学报, 2009, 58(9): 6174-6178. doi: 10.7498/aps.58.6174
    [13] 张玉强, 葛德彪. 一种基于数字信号处理技术的改进通用色散介质移位算子时域有限差分方法. 物理学报, 2009, 58(12): 8243-8248. doi: 10.7498/aps.58.8243
    [14] 傅佳辉, 孟繁义, 杨国辉, 吴 群, 刘心蕾. 基于非分裂FDTD的左手介质电磁特性的研究. 物理学报, 2008, 57(7): 4070-4075. doi: 10.7498/aps.57.4070
    [15] 李明宇, 顾培夫, 张锦龙, 郑臻荣, 刘 旭. 金属薄膜亚波长近场成像特性研究. 物理学报, 2008, 57(7): 4564-4569. doi: 10.7498/aps.57.4564
    [16] 姜彦南, 葛德彪. 层状介质时域有限差分方法斜入射平面波引入新方式. 物理学报, 2008, 57(10): 6283-6289. doi: 10.7498/aps.57.6283
    [17] 安治永, 李应红, 吴 云, 苏长兵, 宋慧敏. 对称等离子体激励器系统电场仿真研究. 物理学报, 2007, 56(8): 4778-4784. doi: 10.7498/aps.56.4778
    [18] 李民权, 陶小俊, 赵 瑾, 吴先良. 基于辛Runge-Kutta-Nystrom方法的雷达散射截面计算. 物理学报, 2007, 56(4): 2115-2118. doi: 10.7498/aps.56.2115
    [19] 刘大刚, 周 俊, 刘盛纲. 用时域有限差分法实现金属支撑杆的计算机模拟. 物理学报, 2007, 56(12): 6924-6930. doi: 10.7498/aps.56.6924
    [20] 王 刚, 温激鸿, 韩小云, 赵宏刚. 二维声子晶体带隙计算中的时域有限差分方法. 物理学报, 2003, 52(8): 1943-1947. doi: 10.7498/aps.52.1943
计量
  • 文章访问数:  4916
  • PDF下载量:  216
  • 被引次数: 0
出版历程
  • 收稿日期:  2016-01-14
  • 修回日期:  2016-07-06
  • 刊出日期:  2016-10-05

/

返回文章
返回