| 基于双带宽高斯滤波器的磁共振弹性图局域频率估算算法研究与实现 |
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| 引用本文： | 汪红志,蔡筱云,王鹤,黄清明,陈奇特,俞捷,王晓琰,陆伦,黄勇,程红岩,张学龙,李鲠颖.基于双带宽高斯滤波器的磁共振弹性图局域频率估算算法研究与实现[J].物理学报,2011,60(9):90204-090204. |
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| 作者姓名： | 汪红志 蔡筱云 王鹤 黄清明 陈奇特 俞捷 王晓琰 陆伦 黄勇 程红岩 张学龙 李鲠颖 |
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| 作者单位： | (1)第二军医大学附属东方肝胆医院,上海 200438; (2)法国贡比涅工程技术大学,贡比涅,法国; (3)华东师范大学物理系,上海市磁共振重点实验室,上海 200062; (4)华东师范大学物理系,上海市磁共振重点实验室,上海 200062;上海理工大学医学影像工程研究所,上海 200093;上海医疗器械高等专科学校,上海 200093; (5)上海理工大学医学影像工程研究所,上海 200093; (6)上海理工大学医学影像工程研究所,上海 200093;上海医疗器械高等专科学校,上海 200093; (7)通用电器医疗系统(中国)有限公司,上海 201203 |
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| 基金项目： | 上海市科研创新基金(批准号:10YZ237),上海市教育高地建设项目科研基金(批准号:P0502)和上海市教育发展基金会"晨光计划"项目(批准号:2010CGB02)资助的课题. #通讯联系人. Email: gyli@phy.ecnu.edu.cn |
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| 摘 要： | 本文对生物体软组织的生物力学模型进行了分析推导和简化,得到了磁共振相位图与生物组织弹性之间的力学关系,根据该关系研究了局域频率估算算法,应用Matlab对算法进行了编程实现,体模弹性图的实现验证了算法有效性,为后续开展临床肝纤维化分级研究奠定基础.
关键词：
磁共振弹性成像
弹性生物力学模型
局域频率估算
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| 关 键 词： | 磁共振弹性成像 弹性生物力学模型 局域频率估算 |
| 收稿时间： | 2010-08-19 |
| 修稿时间： | 1/5/2011 12:00:00 AM |
Study and realization of local frequency estimation algorithm in magnetic resonance elasto-graphy based on dual-bandwidth Gaussian filters |
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| Wang Hong-Zhi,Cai Xiao-Yun,Wang He,Huang Qing-Ming,Chen Qi-Te,Yu Jie,Wang Xiao-Yan,Lu Lun,Huang Yong,Cheng Hong-Yan,Zhang Xue-Long and Li Geng-Ying.Study and realization of local frequency estimation algorithm in magnetic resonance elasto-graphy based on dual-bandwidth Gaussian filters[J].Acta Physica Sinica,2011,60(9):90204-090204. |
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| Authors: | Wang Hong-Zhi Cai Xiao-Yun Wang He Huang Qing-Ming Chen Qi-Te Yu Jie Wang Xiao-Yan Lu Lun Huang Yong Cheng Hong-Yan Zhang Xue-Long and Li Geng-Ying |
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| Institution: | Shanghai Key Laboratory of Magnetic Resonance, Department of Physics, East China Normal University, Shanghai 200062, China;Shanghai Medical Instrumentation College, Shanghai 200093, China;University of Technology Compiegne, Compiegne, France;GE Healthcare (China), Shanghai 201203, China;Institute of Medical Imaging Technology, University of Shanghai Science and Technology, Shanghai 200093, China;Shanghai Medical Instrumentation College, Shanghai 200093, China;Institute of Medical Imaging Technology, University of Shanghai Science and Technology, Shanghai 200093, China;Institute of Medical Imaging Technology, University of Shanghai Science and Technology, Shanghai 200093, China;Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China;Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China;Institute of Medical Imaging Technology, University of Shanghai Science and Technology, Shanghai 200093, China;Shanghai Medical Instrumentation College, Shanghai 200093, China;Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, China;Institute of Medical Imaging Technology, University of Shanghai Science and Technology, Shanghai 200093, China;Shanghai Medical Instrumentation College, Shanghai 200093, China;Shanghai Key Laboratory of Magnetic Resonance, Department of Physics, East China Normal University, Shanghai 200062, China |
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| Abstract: | In the present study we analyze the biomechanical properties of life-form parenchyma, derive the relationship between MR displacement-phase image and the elasticity of life-form parenchyma, thereby study the local frequency estimation(LFE) algorithm. Finally the algorithm is relized by Matlab, and the inversion results of phantom MRE image demonstrate the effectiveness of the LFE algorithm, which would form a basis for subsequent research on liver fibrosis classification . |
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| Keywords: | MRE elastic biomechanical model LFE |
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