Abstract
Recently, Photoacoustic imaging (PAI) technique has been developed to achieve volumetric imaging of blood vessel in biological tissue. Comparing with Optical Coherence Technique or Near Infra-Red Spectroscopy, PAI is expected as more deep part measurement technique due to only one way propagation of light in tissue. In PAI technique, conventional UT probe which needs to contact with tissue surface is generally used for detecting ultrasonic induced by Photoacoustic effects. The author developed laser-ultrasonics which performs remote and non-contacting ultrasonic measurement by laser interferometer. Using this technique, the author has achieved non-contacting measurement of ultrasonic signal induced by photoacoustic effects. In my presentation, we will show a result of three-dimensional imaging of artificial blood vessel with 0.1 mm diameter in simulated biological tissue by aqueous suspensions of Intralipid.
