发明授权
- 专利标题: Ultrasonic diagnostic apparatus, method of measuring pressure gradient, and method of measuring blood vessel elasticity
- 专利标题(中): 超声波诊断装置,压力梯度测定方法及血管弹性测定方法
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申请号: US12659361申请日: 2010-03-05
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公开(公告)号: US08444565B2公开(公告)日: 2013-05-21
- 发明人: Yuji Kondo
- 申请人: Yuji Kondo
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Edwards Neils PLLC
- 代理商 Jean C. Edwards, Esq.
- 优先权: JP2009-066833 20090318
- 主分类号: A61B8/00
- IPC分类号: A61B8/00
摘要:
An ultrasonic diagnostic apparatus capable of obtaining information on a pressure gradient in a blood vessel based on only reception signals of ultrasonic echoes reflected within an object. The apparatus includes: an ultrasonic probe for outputting reception signals; a measuring unit for measuring an inside radius of a blood vessel within the object and blood flow velocities in plural locations in a radial direction substantially at the same time based on the reception signals; and a computing unit for computing a velocity gradient in the radial direction at an inner wall point of the blood vessel by differentiating the blood flow velocities measured by the measuring unit in the radial direction, and computing a pressure gradient at ends of a predetermined length of the blood vessel based on the computed velocity gradient, the measured inside radius of the blood vessel, and a predetermined viscosity of blood.