Recent developments in phonon imaging have increased its value as a tool for studying phonon reflection and transmission at surfaces and have extended its range into the ultrasonic frequency domain. In the process a number of interesting new phenomena have been observed, including reflection phonon ima...
Plane wave imaging persists as a focal point of research due to its high frame rate and low complexity. However, in spite of these advantages, its performance can be compromised by several factors such as noise, speckle, and artifacts that affect the image quality and resolution. In this ...
The medical ultrasound transducer or array not only directly impact on the quality of medical ultrasound imaging system, but also affect its clinical applications. 医疗超声换能器或基阵不仅直接影响到医疗超声图像的质量,同时也决定了系统设备的应用。 20. 54kb The matching of the local light wavefro...
Here we introduce a technique, spectrally multiplexed tomogra- phy (SMT), which provides single-shot, ultrafast CT imaging with a continuous range of angles. In the SMT concept, multiplexing, which is the key to single-shot CT, is done spectrally. The wave- length of a broadband source is...
Ag alignment marks are fabricated on a SiO2(1 μm)/Si substrate using electron-beam lithography with double PMMA layer followed by thermal evaporation of 2 nm/60 nm Cr/Ag and lift-off in ultrasound with acetone. The marks form a grid of 4 × 4 squares of 20 × 20 μm2 eac...
LIPUS is a type of ultrasound that operates in a pulsed wave mode and is typically delivered at significantly lower intensity levels, usually below 3 W/cm2, which is in accordance with safety standards and clinical practice. Also, studies have shown that low-frequency ultrasound, typically at ...
A Novel Synchronous Micro Motor for Intravascular Ultrasound Imaging IEEE Trans. Biomed. Eng., 66 (3) (2019), pp. 802-809, 10.1109/TBME.2018.2856930 View in ScopusGoogle Scholar [15] L. Wang, Y. Hou, K. Zhao, H. Shen, Z. Wang, C. Zhao, X. Lu A novel piezoelectric inertial rotar...
imaging system a phase-mask can be placed that generates a double-helix point spread function. In particular the phase-mask can be implemented with a spatial light modulator placed in the Fourier plane of the microscope or any other appropriate plane. Various other lens, filters, polarizers, ...
single-pixel imaging; microelectromechanical systems (MEMS); computational technology; MEMS scanners; MEMS modulators1. Introduction In conventional imaging systems, the scenery is usually focused by camera lenses onto a focal plane where it is captured by a pixel array detector. Current cameras can ...
Targeted micro-bubble contrast agent can reach a specific target via intravenous injection, and improve the resolution of local tissues under the action of low power ultrasound imaging. 12. 31kb 推导了无线电波传输路径上各点经纬度及高度坐标等参数,并在此基础上进行了波束覆盖区功率密度的估算。 On...