2results about How to "Solve the large measurement error" patented technology

The application discloses a method for obtaining a left ventricular papillary muscle target section and an ultrasonic evaluation method thereof, which comprises obtaining a standard basic section conforming to a guideline, and then determining a corresponding target section and a two-dimensional ultrasonic probe adjustment mode according to a front-lateral or rear-medial papillary muscle type to be imaged and a current standard basic section. Through taking the probe pose when the standard basic section is obtained as a benchmark, the two-dimensional ultrasonic probe is rotated by a specified angle or is directionally tilted under the premise of maintaining an acoustic window unchanged, so that an image of the target section clearly displaying a specific papillary muscle long axis or short axis shape is obtained; the problem of incomplete papillary muscle imaging and distorted shape caused by the fixed section of the conventional two-dimensional ultrasonic is solved, the target section can be repeatedly and stably obtained, and the integrity and accuracy of the papillary muscle ultrasonic imaging are significantly improved.

This invention relates to the field of marine environmental monitoring technology. Specifically, it relates to a high-power marine acoustic tomography system for marine environmental monitoring. The system includes a regional deployment and clock synchronization module, a signal generation and high-power transmission module, a signal reception and propagation time measurement module, a sound velocity calculation and reference area selection module, a sound velocity parameter weighted correction module, and an environmental parameter inversion and result fusion module. By constructing a standardized end-to-end technical solution from regional deployment, signal transmission and reception, parameter calculation to environmental inversion, it achieves large-area, high-precision, and continuous environmental monitoring of target marine areas. Through standardized gridded regional division, GPS carrier phase positioning node calibration, and high-precision clock synchronization using GPS-acquired atomic clocks, a standardized underwater mooring node network is established, ensuring the basic accuracy of underwater acoustic signal propagation time measurement and sound velocity parameter calculation from a hardware deployment perspective.