Trostad B L, Sheridan J P, Link V S, Hennes M K, Stinnett H O
Department of Electrical Engineering, School of Engineering & Mines, University of North Dakota, Grand Forks 58202-7165.
Biomed Sci Instrum. 1994;30:51-5.
Harmonic analysis of the pressure and wall responses of a blood vessel exposed to a dynamic pressure input signal required the development of a software application which could properly synchronize the data gathered by two separate microcomputers. In order to accomplish this task, the Pressure-Image Editor was developed. The first computer is used to generate a swept frequency sinusoidal dynamic pressure input signal while at the same time monitoring the resulting response pressures. The second computer is used to record the physical (visual) response of the artery to the pressure signal via a high speed CCD camera and video digitizer. Using the Pressure-Image Editor, 256 animated images along with 65,536 pressure points can be combined and synchronized based on the camera frame rate, input trigger frequency, and any internal timing delays. The Pressure-Image Editor is a object-oriented application written in C++ and includes a window based graphical user interface.
对暴露于动态压力输入信号的血管压力和血管壁反应进行谐波分析，需要开发一款软件应用程序，该程序能够恰当地同步由两台独立微型计算机收集的数据。为完成这项任务，开发了压力图像编辑器。第一台计算机用于生成扫频正弦动态压力输入信号，同时监测由此产生的响应压力。第二台计算机用于通过高速CCD相机和视频数字化仪记录动脉对压力信号的物理（视觉）反应。使用压力图像编辑器，可以基于相机帧率、输入触发频率和任何内部定时延迟，将256幅动画图像与65,536个压力点进行组合和同步。压力图像编辑器是一个用C++编写的面向对象应用程序，包括一个基于窗口的图形用户界面。
