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Some improvements in the acquisition of pulsed signals of TTFM type for USB compatible display in cardiovascular ultrasonic flow-metering

机译:在心血管超声波流量计量中获取TTFM型TTFM型脉冲信号的一些改进

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The blood flow in coronary vessels is measured, in a non-invasive way, by using a method known as Transit Time Flow Measurement (TTFM), which is considered as the most accurate at present. It is an indispensable complement in the checking of coronary implants (artery bypass grafts) during surgery process. This paper shows an improvement in TTFM blood flow-metering systems designed for narrowband and broadband regimes, in the CSIC and the ICIMAF centres, into the frame of a consortium CYTED R&D project. An efficient signal acquisition and a useful USB compatible display are provided. These TTFM systems are composed by a detection analogic module, an acquisition & pre-processing stage and a portable PC. Our own-design acquisition system has been upgraded by integrating a PIC18F4550 microcontroller, which lets that to be cheaper and smaller. And practical new software is presented offering to surgeons good operation facilities and a more economic and robust flow-metering tool.
机译:通过使用称为运输时间流量测量(TTFM)的方法,以非侵入方式测量冠状动脉血管中的血流,其被认为是目前最准确的。 在手术过程中检查冠状动脉植入物(动脉旁路移植物)是一种不可或缺的补充。 本文显示了在CSIC和ICIMAF中心的窄带和宽带制度设计的TTFM血流计量系统进入联盟患者的框架。 提供有效的信号采集和有用的USB兼容显示。 这些TTFM系统由检测模块,获取和预处理阶段和便携式PC组成。 我们的设计采集系统通过集成PIC18F4550微控制器来升级,这使得能够更便宜和更小。 为外科医生提供了良好的运营设施和更加经济和强大的流量计量工具,提供了实用的新软件。

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