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As one of the most important and well established tools, ultrasound imaging provides noninvasive valuable diagnostic information, especially in the form of cross-sectional images of soft tissues. In this work, we report the design, fabrication, and characterization of press-focused LiNbO3 transducer with one matching layer only. The performance of these transducers is in good agreement with the simulation...
As one of the most important and well established tools, ultrasound imaging provides noninvasive valuable diagnostic information, especially in the form of cross-sectional images of soft tissues. High frequencies are used directly to enable high resolution imaging to be of clinical benefit. As a result, high-frequency ultrasonic transducers with better resolution are needed. The difficulty of a high...
Bessel beams have been used in many applications due to their unique optical properties of maintaining their intensity profiles unchanged during propagation. In imaging applications, Bessel beams have been successfully used to provide extended focuses for volumetric imaging and uniformed illumination plane in light-sheet microscopy. Coupled with two-photon excitation, Bessel beams have been successfully...
We report a rotating-mirror scanning camera system based on a galvanometer and a CCD camera. This system improves the imaging speed by placing a series of paralleled images on the sensor of the camera so that multiple images are acquired during one single exposure; thus, the frame rate of the CCD camera does not limit the temporal resolution of recorded events. The camera is implemented on a custom...
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