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METHOD FOR DETECTING FIRST ARRIVAL PULSE IN ULTRASOUND TRANSMISSION COMPUTED TOMOGRAPHY USING WINDOWED NONLINEAR ENERGY OPERATOR
METHOD FOR DETECTING FIRST ARRIVAL PULSE IN ULTRASOUND TRANSMISSION COMPUTED TOMOGRAPHY USING WINDOWED NONLINEAR ENERGY OPERATOR
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机译:窗式非线性能量算子在超声透射计算机断层成像中第一到达脉冲的检测方法
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摘要
The present invention relates to a method for detecting a first arriving pulse in an ultrasound transceiver computed tomography (UTCT), more particularly, to an extraction of an image index for constructing a transmission ultrasound tomograph in an ultrasound imaging system, More particularly, the present invention relates to a method for detecting a first arriving pulse transmitted through a target object (hereinafter referred to as a target object) using a Windowed Nonlinear Energy Operator (wNEO) in order to utilize the reconstructed image. The transducer includes a pulse generator for generating a pulse, a transducer for converting the pulse into an ultrasonic signal and radiating the ultrasonic signal to a target object, a receiving transducer for receiving an ultrasonic signal transmitted through the object and converting the ultrasonic signal into an analog signal, A method for detecting a first arriving pulse in a transillumination ultrasound tomograph including an ultrasonic transducer and an analog-to-digital converter for converting an analog signal provided from the receiving transducer into a digital signal and outputting the digital signal, Calculating a nonlinear energy operator based on the acquired electrical pulse sequence; convoluting the calculated nonlinear energy operator with a window function to yield a windowed nonlinear energy operator; , The calculated window function is applied to the nonlinear energy operator And detecting a first arriving pulse by applying a threshold value operator to the first ultrasound pulse. Therefore, according to the present invention, by detecting the first arriving pulse by applying the window function nonlinear energy operator, a fast calculation speed can be ensured and the detection rate can be maximized. In addition, the structure is simplified, the applicability is excellent, and it can be implemented at a low cost, which is an excellent effect in image acquisition in a transmission ultrasound tomograph.
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