[1]罗霞,罗海军,潘海涛,等. 基于滤波反投影算法磁感应成像噪声抑制能力的质量评估[J].中国医学物理学杂志,2018,35(11):1281-1286.[doi:DOI:10.3969/j.issn.1005-202X.2018.11.008]
 LUO Xia,LUO Haijun,PAN Haitao,et al. Quality evaluation of magnetic induction imaging noise suppression based on filtered back-projection algorithm[J].Chinese Journal of Medical Physics,2018,35(11):1281-1286.[doi:DOI:10.3969/j.issn.1005-202X.2018.11.008]
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 基于滤波反投影算法磁感应成像噪声抑制能力的质量评估()
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《中国医学物理学杂志》[ISSN:1005-202X/CN:44-1351/R]

卷:
35卷
期数:
2018年第11期
页码:
1281-1286
栏目:
医学影像物理
出版日期:
2018-11-18

文章信息/Info

Title:
 Quality evaluation of magnetic induction imaging noise suppression based on filtered back-projection algorithm
文章编号:
1005-202X(2018)11-1281-06
作者:
 罗霞罗海军潘海涛温开旭廖勇范嗣强
 重庆师范大学物理与电子工程学院/光电功能材料重庆市重点实验室, 重庆 401331
Author(s):
 LUO Xia LUO Haijun PAN Haitao WEN Kaixu LIAO Yong FAN Siqiang
 Chongqing Key Laboratory of Photo-Electric Functional Materials/College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China
关键词:
 磁感应成像滤波反投影生物组织噪声抑制信噪比
Keywords:
 Keywords: magnetic induction tomography filtered back-projection biological tissue noise suppression signal-to-noise ratio
分类号:
R318;TP391
DOI:
DOI:10.3969/j.issn.1005-202X.2018.11.008
文献标志码:
A
摘要:
 【摘 要】 磁感应成像是一种利用电磁感应原理重构生物组织电导率分布的非接触式电阻抗成像技术。利用一组亥姆霍兹线圈为激励源,能在成像区域内产生均匀分布的激励磁场,从而能够简化成像算法。系统模型由背景物体、异物、亥姆霍兹线圈和20个检测线圈构成。利用滤波反投影算法重构图像,研究该系统下单目标和双目标的图像重构,并且通过并利用相关系数、归一化均方距离和归一化平均绝对距离3个评估参数分析算法对不同噪声的抑制能力。结果表明,当信噪比≥30 dB时,单目标和双目标异物成像效果接近没有噪声的成像结果。
Abstract:
 Abstract: Magnetic induction imaging is a non-contact electrical impedance imaging technology that reconstructs the distribution of electrical conductivity of biological tissues by the principle of electromagnetic induction. Using a set of Helmholtz coils as the excitation source, a uniformly distributed excitation magnetic field can be produced in the imaging region, thus simplifying the imaging algorithm. The system model is made up of a background object, a foreign object, a Helmholtz coil and 20 detection coils. The filtered back-projection algorithm is utilized to reconstruct the image and the image reconstructions of the single target and dual targets are studied. Moreover, the performance of algorithm in noise suppression can be evaluated by analyzing 3 parameters, namely correlation coefficient, normalized mean square distance and normalized absolute distance. The results showed that when the signal-to-noise ratio was larger than or equal to 30, the imaging results of signal target and dual targets are close to those without noise.

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备注/Memo

备注/Memo:
 【收稿日期】2018-09-20
【基金项目】国家自然科学基金(51507023, 11647098);重庆市科委基础和前沿研究项目(CSTC2016JCYJA0920);重庆市教委科学技术研究项目(KJ1703063)
【作者简介】罗霞,硕士研究生,研究方向:磁感应成像逆问题,E-mail: 954763838@qq.com;罗海军,博士,副教授,硕士生导师,研究方向:磁场探测、磁感应成像正问题、图像重构,E-mail: luohaijun@cqnu.edu.cn
【通信作者】范嗣强,博士,副教授,研究方向:光学工程、激光医学,E-mail: mikefan111@163.com
更新日期/Last Update: 2018-11-22