审美家 发表于 2025-3-21 19:07:33
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Backscatter-Imaging Instruments,n medicine is echo or backscatter geometry. This has evolved because of the limited number of available windows into the body. Ultrasonic energy is stopped by bones and gas-filled cavities which can be found throughout the body. Therefore, medical instruments have evolved that transmit energy into aURN 发表于 2025-3-22 13:11:41
Computed Transverse Imaging,hers in implementing a wide variety of CT imaging techniques. These techniques can be divided into two broad categories. One category of methods is based on the straight-ray approximation for either transmission or reflection measurements. Because the straight-ray approximation is used, the measuremaffinity 发表于 2025-3-22 18:14:33
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Nils Kaufmann,Andre Magner,Nils Neuberin compressibility or acoustic impedance differences. In this section, we almost exclusively treat scattering as a phenomenon of redirection of energy in space. A few techniques that are currently used to extract quantitative information about the nature of the tissues in the echo mode are discussed.figurine 发表于 2025-3-23 01:26:08
Class 1, 2, and 3 Scattering,in compressibility or acoustic impedance differences. In this section, we almost exclusively treat scattering as a phenomenon of redirection of energy in space. A few techniques that are currently used to extract quantitative information about the nature of the tissues in the echo mode are discussed.逃避责任 发表于 2025-3-23 07:13:25
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