Conclusion: NTHI two - dimensional echocardiography can provide accurate estimation of left ventricular systolic function.

结论: 超声NTHI技术能准确可靠测定左室容量和射血分数,为评价左室收缩功能提供简便易行的方法.

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Results NTHI showed structural confusion fluid dark areas and network topology surrounding portal vein blocked.

结果　自然组织谐波成像能清晰显示门脉海绵样变性,门脉癌阻塞部位周围结构紊乱,呈蜂窝样或迂曲管状结构.

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Objective : To investigate wather native tissue harmonic imaging ( NTHI ) can improve sonograph and increase diagnosis rate.

目的: 研究自然组织谐波成像技术对超声图像的影响,旨在提高诊断率.

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