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Combined correlation estimation of axial displacement in optical coherence elastography: assessment of axial displacement sensitivity performance relative to existing methods

机译：光学相干弹性成像中轴向位移的组合相关估计：相对于现有方法的轴向位移灵敏度性能评估

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摘要

A combined correlation method is introduced to optical coherence elastography for axial displacement estimation. Its performance is compared with that of amplitude correlation tracking and phase shift estimation. Relative sensitivities to small (sub-micron), and large (pixel-scale) axial displacements are analysed for a Perspex test object and gelatine phantom. The combined correlation method exhibited good overall performance, with a larger dynamic range than phase shift estimation and higher sensitivity than amplitude correlation tracking.

机译：将组合相关方法引入光学相干弹性成像，以估计轴向位移。将其性能与幅度相关跟踪和相移估计的性能进行比较。分析了有机玻璃测试对象和明胶体模对小（亚微米）和大（像素级）轴向位移的相对灵敏度。组合相关方法具有良好的整体性能，其动态范围大于相移估计，灵敏度高于幅度相关跟踪。

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《Optical Elastography and Tissue Biomechanics II》|2015年|93270W.1-93270W.6|共6页
会议地点 San Francisco CA(US)
作者
A. Grimwood; A. Messa; J. C. Bamber;
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作者单位

Department of Medical Physics, Royal Surrey County Hospital, Egerton Road, Guildford, Surrey, GU2 7XX, UK;

Division of Radiotherapy and Imaging, Institute of Cancer Research and Royal Marsden Hospital, Downs Road, Sutton, Surrey, SM2 5PT, UK;

Division of Radiotherapy and Imaging, Institute of Cancer Research and Royal Marsden Hospital, Downs Road, Sutton, Surrey, SM2 5PT, UK;

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正文语种 eng
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关键词
optical coherence tomography elastography correlation phase displacement estimation;

机译：光学相干断层成像弹性成像相关相移估计。;

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机译：弹性成像中二维空间综合相关降低组织侧向位移引起的去相关效应。

Combined correlation estimation of axial displacement in optical coherence elastography: assessment of axial displacement sensitivity performance relative to existing methods

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