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基于波纹相关性分析和脉冲逆转技术的组织超声波成像
Xiaoyan Zhao1, Cuiyun Yang1, Yuchao Lyu1
1Department of Information Engineering, School of Information Science and Technology, Qingdao University of Science and Technology, Tsingtao, Shandong, China.
概括
一种基于脉冲逆转的新组织波成像技术,使用连续波段变换和定制"组织波段"显著提高了超声波图像质量. 这种方法提高了横向空间分辨率,对比率和对比度与噪声比率,克服了传统方法的局限性.
科学领域:
- 超声波成像 超声波成像
- 医学物理 医学物理
- 信号处理 信号处理
背景情况:
- 基于脉冲逆转的组织波成像 (PIHI) 减少了波泄漏,但容易受到运动工件的影响,限制了空间分辨率和对比度.
- 现有的方法在运动灵敏度和低于最佳的图像质量方面扎.
研究的目的:
- 为了提高超声波图像质量,使用一种基于脉冲逆转的新组织波成像技术.
- 解决运动器件,改善超声波成像中的空间分辨率和对比度.
主要方法:
- 使用连续波段转换来将母波段与收到的超声波回声相关联.
- 使用霍克洛夫-扎博洛茨卡亚-库兹涅佐夫 (KZK) 波方程设计了一种新的"组织波段",以改善相关性.
- 使用Ultrasonix SonixTouch系统获取射频数据,并对幽灵和人体组织进行了测试.
主要成果:
- 与标准PIHI相比,拟议的技术显示横向空间分辨率平均有49.52%的改善.
- 对比率 (CR) 和对比度与噪声比率 (CNR) 分别显著增加5.55dB和1.40dB.
- 定制的"组织波段"在所有测试的指标中都超过了标准的Mexh和Morl波段.
结论:
- 开发的基于脉冲逆转的技术有效地提高了超声波图像质量.
- 在横向空间分辨率,CR和CNR方面取得了显著的改进.
- 新的"组织波段"为超声波组织波成像提供了卓越的性能.
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