CN100515345C - 通过超声造影成像中的补给曲线拟合进行的血液流动估计 - Google Patents
通过超声造影成像中的补给曲线拟合进行的血液流动估计 Download PDFInfo
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- CN100515345C CN100515345C CNB2004800164561A CN200480016456A CN100515345C CN 100515345 C CN100515345 C CN 100515345C CN B2004800164561 A CNB2004800164561 A CN B2004800164561A CN 200480016456 A CN200480016456 A CN 200480016456A CN 100515345 C CN100515345 C CN 100515345C
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Abstract
Description
x | 像平面内的空间坐标,与波束正交的(横)向 |
y | 像平面上的空间坐标,与波束正交的(垂直)方向 |
z | 像平面内的空间坐标,沿波束的(深度)方向 |
D | 垂直(y)方向上微泡破坏的空间范围 |
F | 超声频率 |
c | 声速 |
A | 超声波长 |
m | 自然对数的均值 |
s | 自然对数的标准差 |
μ | 对数正态分布的均值 |
σ<sup>2</sup> | 对数正态分布的方差 |
γ | 对数正态分布的偏度 |
τ | 从受破坏区域的边缘到中心的流动渡越时间 |
τmean | τ的均值 |
C | 微泡的概率密度或相对浓度 |
A | 参数方程中的幅度因子 |
O | 参数方程中的偏移因子 |
a | y方向上的半孔径宽度 |
v | 局部流动速度(v<sub>x</sub>,v<sub>y</sub>,v<sub>z</sub>分量) |
K<sub>Tx</sub>,K<sub>Rx</sub> | 发射和接收处的2α/λz参数 |
K | 由K<sup>2</sup>=K<sup>2</sup><sub>Tx</sub>+K<sup>2</sup><sub>Rx</sub>确定的发射-接收参数 |
Y | 无单位变量Y=Ky |
Θ | 流动方向和像平面的法向之间的角度 |
β | 一级指数函数的“速度”项 |
GL | 视频信号的灰度级 |
t | 时间 |
dt | 小波分析中的时间采样 |
η | 累积对数正态概率分布函数中的偏差项 |
Γ | 任意比例常数 |
初始mse | 最终mse | |
J=25 | 111.434 | 12.5768 |
J=50 | 111.434 | 0.5925 |
J=100 | 111.434 | 0.4729 |
Claims (38)
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EP03405423.9 | 2003-06-12 | ||
EP03405423 | 2003-06-12 | ||
EP03405903.0 | 2003-12-17 |
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CN1805712A CN1805712A (zh) | 2006-07-19 |
CN100515345C true CN100515345C (zh) | 2009-07-22 |
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Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011001332A1 (en) * | 2009-06-30 | 2011-01-06 | Koninklijke Philips Electronics N.V. | Quantitative perfusion analysis |
CN103330576B (zh) * | 2013-06-09 | 2015-05-13 | 西安交通大学 | 一种基于组织中微泡动力学模型的微弹性成像方法 |
CN104287764B (zh) | 2014-09-11 | 2017-05-31 | 沈阳东软医疗系统有限公司 | 一种ct灌注成像方法和设备 |
CN110892260B (zh) * | 2017-06-09 | 2023-04-14 | 埃因霍温科技大学 | 使用局部系统识别的剪切波粘弹性成像 |
CN108553763B (zh) * | 2018-01-19 | 2020-02-18 | 北京工业大学 | 一种基于超声回波去相关成像技术的微波热疗监测方法 |
CN110400360B (zh) * | 2019-07-25 | 2021-03-19 | 北京航空航天大学 | 一种基于全卷积神经网络的声波渡越时间检测方法 |
CN110353729B (zh) * | 2019-07-30 | 2022-02-15 | 北京航空航天大学 | 一种基于双向长短期记忆网络的声波渡越时间检测方法 |
CN112785588B (zh) * | 2021-02-05 | 2021-09-14 | 南京钺曦医疗科技有限公司 | 一种ct与mr脑灌注数据的运动幅度自动估计方法 |
CN115990034B (zh) * | 2021-10-19 | 2024-09-10 | 复旦大学 | 一种随机空间采样的超快超声血流成像方法及系统 |
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2004
- 2004-06-11 CN CNB2004800164561A patent/CN100515345C/zh not_active Expired - Lifetime
Non-Patent Citations (6)
Title |
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Fractal modeling of microbubble destruction-reperfusioninunresolves vessels. raffi,kharchakdjian,et,al.2001 IEEE ULTRASONICS SYMPOSIUM. 2001 |
Fractal modeling of microbubble destruction-reperfusioninunresolves vessels. raffi,kharchakdjian,et,al.2001 IEEE ULTRASONICS SYMPOSIUM. 2001 * |
Hardware and software platform ofr real-time processingandvisualization of echographic radiofrequency signals. Marco Scabia et al.IEEE TRANSCTIONS ON ULTRASONICS,FERROELECTRICS AND FREQUENCY CONTROL. 2002 |
Hardware and software platform ofr real-time processingandvisualization of echographic radiofrequency signals. Marco Scabia et al.IEEE TRANSCTIONS ON ULTRASONICS,FERROELECTRICS AND FREQUENCY CONTROL. 2002 * |
Quantification of blood flow. DAVID COSGROVE, ROBERT ECKERSLEY.EUROPEAN RADIOLOGY,Vol.VOL.11 No.NO.8. 2001 |
Quantification of Myocardial Blood FlowWithUltrasound-Induced Destruction ofMicrobubblesAdministeredas a Constant Venous Infusion. WEI K ET AL.CIRCULATION,Vol.VOL.5 No.NO.97. 1998 |
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