[The recording of renal cortical blood flow by laser Doppler flowmetry].

Several techniques are available for measuring the microcirculation. The results, however, cannot be extrapolated due to the different, intricate microvasculature of each organ system. We measured the renal cortical blood flow using laser Doppler flowmetry. This flowmeter permits blood flow measurements of very small areas of tissue. Precise information from selected areas, such as the renal cortex, can thus be obtained. The results are expressed in perfusion units (PU).