【摘 要】
：
Background, Motivation and Objective Currently, the mechanical properties of anisotropic tissues such as skeletal muscle are evaluated by assuming the media to be transversely isotropic (TI) and estim
【机 构】
：
Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, Rochester, MN, USA
论文部分内容阅读
Background, Motivation and Objective Currently, the mechanical properties of anisotropic tissues such as skeletal muscle are evaluated by assuming the media to be transversely isotropic (TI) and estimating the shear wave group velocity (cg) as a function of the angle between the tissue fibers and the direction of shear wave propagation in the range -180° to +180°. Here, we propose a simplified method, called In-Plane Anisotropy (IPA), to estimate the TI shear moduli by measuring the shear waves directed at different angles with respect to the main axis of the muscle fibers, defined as 0°, in a single B-mode imaging plane. By measuring cg at angles centered around 0°, we can fit a TI model to these values to estimate the complete TI behavior. To investigate the IPA method, we used a finite element model (FEM) of the shear wave propagation in an elastic TI media, and we evaluated the properties of a TI phantom.
其他文献
Background, Motivation and Objective Optogenetics is a recently developed technique that has been widely implemented in the field of neuroscience. Channelrhodopsins (ChR), i.e., proteins that function
Background, Motivation and Objective In the past 20 years, it has been shown that Surface Acoustic Waves (SAW) actuators are versatile tools for the manipulation of fluids at micrometric scales. A non
Background, Motivation and Objective Ultrasound-based measurement of absolute concentration of scatterers has a wide range of potential applications such as in microbiology, cell culture, and blood wo
Background, Motivation and Objective In prior research, separation of particles or biological cells in liquids has been accomplished using a balance of ultrasonic forces and viscous drag forces, which
Background, Motivation and Objective This study builds on previous research to investigate the adaption of a miniaturized class IV transducer configuration, which has a needle end-effector attached, f
Background, Motivation and Objective Piezoelectric ultrasonic atomizer devices find applications from inhalation drug therapy to humidification of living environments. Through the piezoelectric action
Background, Motivation and Objective Thermal power generation increased its share up to ~88％ in 2013 Japan due to shutdown of nuclear power plants so that maintenance of thermal power plants becomes t
Background, Motivation and Objective Nowadays air-coupled ultrasonic techniques are increasingly used for non-destructive evaluation. The biggest problem is big losses of ultrasonic signals mainly due
Background, Motivation and Objective Devices for microparticle and cell manipulation have been developed for many biophysical applications. Similar to optical tweezers, tightly focused ultrasound micr
Background, Motivation and Objective Millimeter and sub-mm sized implantable medical devices with high available power are attractive for many novel therapeutic applications. Ultrasonic power delivery