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It is well known that ultrasound helps increase the efficiency of thrombolysis when used together with tissue plasminogen activators. Recently, a catheter device mounting a piezoelectric ultrasound transducer on its tip has been proposed. However, this device has some limitations because the supply of high-voltage electric power to piezoelectric elements in the transducer can be dangerous to a human...
The guided-wave technology becomes a powerful tool for the nondestructive inspection of cylindrical waveguides. Various wave modes such as longitudinal, torsional, and flexural modes can be used for waveguide inspection, but the nondispersive first branch of the torsional wave mode is the most attractive. So we have recently developed a torsional wave generation/measurement method using slender rectangular...
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