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Advantages of capacitive micromachined ultrasonic transducers (CMUTs) such as wide frequency bandwidth could be used in nonlinear contrast imaging. However, the driving electrostatic force induces a nonlinear behavior of the CMUT generating thus undesirable harmonic components. Consequently, the use of CMUT for harmonic imaging, with or without contrast agents becomes challenging. To insure their...
Contrast agents for ultrasound imaging, composed of tiny gas microbubbles, have become a reality in clinical routine. They are extensively used in radiology for detection and characterization of various tumors and in cardiology for left ventricular opacification. Recent experimental studies showed that ultrasound waves in combination with contrast agent microbubbles increase transiently cell membrane...
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