Based on optoacoustic effect, time-resolved optoacoustic technique effectively combines optical technology with acoustic technology and partly overcomes the biological tissue's scatter characteristics which might influence the results of measurement. Optoacoustic technique has the advantages of high sensitivity and high resolution and has been widely applied in biomedicine field. In this paper, the measuring principles, the key technique, application and future direction of this technique are synthetically reviewed to promote the research in theory and application in the future.
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