Devices, systems, and methods for ultrasonically acquiring far-field and near-field images within a body are disclosed. An ultrasound imaging device adapted for insertion within a body includes a first ultrasonic sensor configured to transmit ultrasonic waves at a first frequency for acquiring far-...
A parametric speaker is a device for generating and focusing highly directional sound beams. It is essentially a by-product that comes with the nonlinearity of ultrasound. It is noteworthy that this directional beam was controlled and utilized mostly for far-field applications in the past. We empi...
Fast computation of far-field pulse-echo PSF of arbitrary arrays for large sparse 2-D ultrasound array design 2018, Ultrasonics Citation Excerpt : Therefore, in many researches [11,12] narrowband beam pattern (BP) has been chosen as the evaluation tool for designing narrowband arrays of antennas...
A method is presented to calculate the near- and far-field transient radiation of acoustical transducers using low sampling frequencies. The method is base... D’hooge,Jan - 《Journal of the Acoustical Society of America》 被引量: 51发表: 1997年 Multifrequency acoustic measurement of concentratio...
In the sub-MHz ultrasound domain, the resulting radiation force causes the particles to assemble at the pressure antinodes along concentric circles corresponding to the Bessel profile. By imposing an axial confinement in the evanescent region, the subwavelength two-plate sandwich system becomes resonant...
This nanoplatform offers a versatile approach for the diagnosis and treatment of life-threatening diseases caused by various thrombotic disorders.Similar content being viewed by others Dual-mode nanoprobe strategy integrating ultrasound and near-infrared light for targeted and synergistic arterial thrombolysis...
The formation of an occlusive thrombus in the blood vessel is the main culprit for numerous life-threatening cardiovascular diseases that represent the leading cause of morbidity and mortality worldwide. Herein, we develop a polymer nanoplatform that int
In contrast, modulation of neural activity by physical stimulus (e.g., electric current, magnetic field, and ultrasound) offers the unique advantages of strong accessibility and controllability. For instance, with the assistance of magnetic nanoparticles (MNPs), alternating magnetic field could excite ...
f Bouncing frequency dependent on the laser power and bubble radius, lines for the theory, and dots for the experiments. g The numerical simulation conforming the bouncing bubble and revealing the related velocity field. The white dash line for the location of TIL. The error bars of the data...
The use of ultrasound was found to enhance the photo-Fenton process [291] at near neutral conditions (see Fig. 30). An aerobic pre-treatments allowed for less energy and H2O2 usage and was 4 times quicker, with a cost of photo-Fenton 6.4 euro per meter3 [292]. Photo-Fenton with the...