| 刘彦,冯乃章,马立勇.联合刚性和B样条弹性配准的超声弹性成像[J].中国医学影像技术,2011,27(6):1279~1282 |
| 联合刚性和B样条弹性配准的超声弹性成像 |
| Combining rigid and nonrigid registration based on B-spline in ultrasound elastography |
| 投稿时间：2010-12-25 修订日期：2011-02-19 |
| DOI： |
| 中文关键词: 弹性成像技术 B样条 图像配准 |
| 英文关键词:Elasticity imaging techniques B-spline Registration |
| 基金项目:国家自然科学基金(30800240)、山东省科技攻关项目(2009GG10001006)、山东省优秀中青年科研奖励基金(BS2010DX001)、山东省威海市科技发展计划(2010-3-96)。 |
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| 中文摘要: |
| 目的 设计一种基于图像数据的超声弹性成像方法。方法 联合刚性和B样条弹性配准方法对压缩前后的超声图像进行运动估计。首先进行全局的刚性配准,然后进行局部弹性配准,进而得出组织的运动位移,对纵向位移进行微分,求出组织的纵向应变。结果 通过对一实测超声体模数据进行估计,获得了准确的应变信息。结论 联合刚性和B样条弹性配准方法可以准确地估计出组织的应变信息,具有较好的临床应用价值。 |
| 英文摘要: |
| Objective To design an ultrasound elastography method based on B mode ultrasound images. Methods The method combined rigid and nonrigid registration based on B-spline were used to estimate the displacement field from the pre and post-compression B mode ultrasound images. The displacement captured the global and local motion of the B mode images. The axial strain was computed with gradient calculation of axial displacement field. Results Strain information was obtained correctly through estimating the displacement field from the pre and post-compression B mode phtantom images. Conclusion The proposed method can correctly obtain the strain information, therefore has potential clinical value. |
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