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71results about How to "Many points" patented technology

Reslution optical & ultrasound devices for imaging and treatment of body lumens

A rotationally vibrating imaging catheter and method of utilization has an array of ultrasound or optical transducers and an actuator along with signal processing, display, and power subsystems. The actuator of the preferred embodiment is a solid-state nitinol actuator. The actuator causes the array to oscillate such that the tip of the catheter is rotated through an angle equal to or less than 360 degrees. The tip is then capable of rotating back the same amount. This action is repeated until the desired imaging information is acquired. The rotationally vibrating catheter produces more imaging points than a non-rotating imaging catheter and eliminates areas of missing information in the reconstructed image.Rotationally vibrating catheters offer higher image resolution than stationary array catheters and greater flexibility and lower costs than mechanically rotating imaging catheters.The rotationally vibrating array carried on a catheter is vibrated or rocked forward and backward to allow for acquisition of three-dimensional information within a region around the transducer array.The addition of adjunctive therapies to the imaging catheter enhances the utility of the instrument. Examples of such therapies include atherectomy, stent placement, thrombectomy, embolic device placement, and irradiation.
Owner:LENKER JAY A

Underwater terrain inversion method for coal mining subsidence ponding area by utilizing InSAR monitoring data

The invention discloses an underwater terrain inversion method for coal mining subsidence ponding area by using InSAR monitoring data. The method comprises the steps: firstly obtaining SAR images before and after the subsidence of a research area and DEM data before the subsidence of the subsidence area, and obtaining surface subsidence information after subsidence through employing the D-InSAR technology; solving a probability integral method parameter of a working surface according to the surface subsidence information and parameters such as working surface angular point coordinates, miningthickness and inclination angle; and finally, inverting the dynamic change of the underwater topography of the subsidence area and the final form of the underwater topography after stopping mining byadopting a model based on a probability integral method. According to the method, the InSAR data acquisition cost is low; the surface subsidence data obtained by the D-InSAR technology is high in precision and large in data volume; the parameter inversion is based on semi-measured data, a parameter inversion result is suitable for the research area, the underwater topography of a ponding area in the mining process of a working face can be inversed, the establishment of an amphibious composite ecosystem of the subsidence area is guided, and an important reference is provided for land utilization planning, land reclamation, ecological restoration and the like of the land surface of the subsidence area.
Owner:ANHUI UNIVERSITY
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