目的探讨组织谐频成像（THI）与常规基频成像（FI）的对比观察，研究THI改善声像图质量，增强图像的显现力。
Objective To study the method of how to improve the quality of sonograms and increase sonograms reveal rate by comparative observation between tissue harmonic imaging(THI)and fundamental imaging (FI).
目的探讨组织谐频成像（THI）与常规基频成像（FI）的对比观察，研究THI改善声像图质量，增强图像的显现力。
Objective To study the method of how to improve the quality of sonograms and increase sonograms reveal rate by comparative observation between tissue harmonic imaging(THI)and fundamental imaging (FI).
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