학술논문

Measurement of organ blood flow with coloured microspheres: a first time-saving improvement using automated spectrophotometry
Document Type
Conference
Source
Proceedings of Computers in Cardiology Conference Computers in cardiology Computers in Cardiology 1993, Proceedings.. :691-694 1993
Subject
Bioengineering
Computing and Processing
Signal Processing and Analysis
Fluid flow measurement
Blood flow
Application software
Automatic control
Pressure control
Valves
Volume measurement
Instruments
Dogs
Animal structures
Language
Abstract
The authors report on the development and application of automated spectrophotometry for regional blood flow measurement using the coloured microsphere (CM) dye-extraction technique. A software program running under Microsoft Windows 3.1 was written to simultaneously control an autosampler, sipper pump, pressure valves and spectrophotometer with an exclusively designed small-volume flow-cell. The system allowed consecutive measurements of over 200 tissue samples in volumes as small as 40 /spl mu/L without any attendance. The system was validated in eight chronically instrumented dogs. A comparison between the advanced CM technique and the standard radionuclide microspheres method demonstrated a strong correlation for blood flows to various organs in awake animals. The system proved to be a reliable, user-friendly and time-saving application for the CM dye-extraction technique.ETX