| Elasticity imaging for regularly spaced structures utilizing WT matched filtering method |
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| 作者姓名： | CUI Yaoyao WAN Mingxi ZHEN Bin LI Junbo WANG Supin |
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| 作者单位： | Department of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, China,Department of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, China,Department of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, China,Department of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, China,Department of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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| 基金项目： | Supported by National Natural Science Foundation of China (Grant Nos. 69925101, 39970208) and Science and Technology Foundation for Ph. D Subject of college (Grant No. 98069826) |
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| 摘 要： | Based on wavelet transform of time-scale domain, a new strain estimation method is presented to position the regular scatterers, calculate the local scatterer spacing and its change, and estimate the internal strain distribution of tissue mimicking phantom. Simulation and experiment results for uniform and nonuniform phantoms show the internal strain of regularly spaced structures can be estimated accurately using this method and the influence of global boundary condition on the estimated strain distribution can be eliminated by reconstructing the real elasticity distribution. This approach has the potentials to become a valuable tool for the regularly spaced structures.
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| 关 键 词： | elastography local scatterer spacing wavelet transform strain imaging |
Elasticity imaging for regularly spaced structures utilizing WT matched filtering method |
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| CUI Yaoyao,WAN Mingxi,ZHEN Bin,LI Junbo,WANG Supin.Elasticity imaging for regularly spaced structures utilizing WT matched filtering method[J].Progress in Natural Science,2002,12(8):608-614. |
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| Authors: | CUI Yaoyao WAN Mingxi ZHEN Bin LI Junbo WANG Supin |
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| Institution: | Department of Biomedical Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | Based on wavelet transform of time-scale domain, a new strain estimation method is presented to position the regular scatterers, calculate the local scatterer spacing and its change, and estimate the internal strain distribution of tissue mimicking phantom. Simulation and experiment results for uniform and nonuniform phantoms show the internal strain of regularly spaced structures can be estimated accurately using this method and the influence of global boundary condition on the estimated strain distribution can be eliminated by reconstructing the real elasticity distribution. This approach has the potentials to become a valuable tool for the regularly spaced structures. |
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| Keywords: | elastography local scatterer spacing wavelet transform strain imaging |
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