A new method of truncation MR artifact reduction is proposed in this paper.

本文提出一种消除磁共振图像截断伪影的新方法。

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This method is based on the techniques of block truncation coding and vector quantization.

该方法是以分块截断编码技术和矢量量化技术为基础的编码方法。

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This paper introduces the theory of the phase-locked loop (PLL) and the direct digital synthesis (DDS), a method to improve the precision of DDS and reduce its phase truncation error is also given.

介绍了锁相环(PLL)技术和直接数字式频率合成(DDS)技术的基本工作原理，给出了一种提高DDS输出频率精度及减小其相位截断误差的方法。

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