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Some perturbations on the ultrasonic measurements in phantoms using transit-time flow-metering systems

机译：使用传输时间流量计量系统对幻影超声测量的一些扰动

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The use of test and calibration systems has great importance during the design & development of medical ultrasonic devices. In the particular case of analyzing in a laboratory new transit-time designs (for flow estimation in cardiac vessels) using phantoms (artificial tissues), it is necessary to confirm the existence of a certain linearity in the measurements, and also to achieve accurate calibrations of those in absolute value. However, the distinct acoustic and elastic properties encountered in the walls of the artificial blood vessels, commonly used in laboratory (based on plastic o silicone materials), during the design and development phases, can significantly alter these results, leading en many cases to wrong conclusions in laboratory evaluations. This work is devoted to study the influence that the characteristics of artificial vessels, respect to the real blood vessels, can exert in the measures acquired by an electronic broadband Transit-Time system, which is due to the distinct propagation times through the walls of the phantom devices.
机译：在医用超声装置的设计和开发期间，使用测试和校准系统的使用具有重要意义。在实验室新的过境时间设计中分析的特定情况（用于心脏容器中的流量估计），使用幽灵（人为组织），必须确认在测量中的某种线性度存在，并且还可以实现精确的校准绝对值的那些。然而，在设计和开发阶段的实验室（基于塑料O硅胶材料）中常用的人工血管壁中遇到的不同的声学和弹性特性，可以显着改变这些结果，导致许多情况下出错在实验室评估中的结论。这项工作致力于研究人造血管特征，尊重真实血管的影响，可以在电子宽带传输时间系统获得的措施中发挥，这是由于通过墙壁的不同传播时间幻影设备。

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