Abstract
Measurement of regional blood flow (RBF) by means of the radioactive microsphere method yields large sets of tissue flow values depending upon the experimental protocol. To support semiquantitative analysis and compact presentation of these data we have developed a program to produce pseudo-colour images of RBF for various projections and sections of organs (heart,kidney,brain,stomach) which visualize specific layers of tissue samples of these organs. Lower and upper limits of the total range of RBF are calculated and this range is divided linearly into 14 intervals which are represented by different colours on the monitor. A tissue sample with a flow value falling into a specific interval is displayed using the corresponding colour. This provides a tool for semiquantitative analysis of the spatial distribution and the heterogeneity of regional blood flow within the organs, for the comparison of RBF values between different parts or layers of organs, for the comparison of RBF values between different phases of an experiment, and for the comparison of RBF values between different experiments.
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