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phase encoding

Tradução de "phase encoding" em chinês

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相位编码

Reconstructing the data obtained by sampling in the phase encoding lines in the area of interest.

重建在所述感兴趣区中的相位编码线采样得到的数据。

Figure 6 shows the illustration of interleaved sampling of the phase encoding in the sequential frames

图6是在相邻几帧中相位编码交错采样的示意图；

The existing several parallel imaging technologies realize the acceleration by regularly reducing the phase encoding lines and restoring the missed data by post-processing, to improve the time resolution or spatial resolution, which is unable to obtain better time resolution and spatial resolution at the same time.

目前采用的几种并行成像的技术需要规则地减少相位编码线并通过后处理恢复丢失的数据来进行加速，以改善时间分辨率或者改善空间分辨率，无法同时获得较好的时间分辨率和空间分辨率。

For instance, the phase encoding lines can be further reduced by reducing the size of segments with lower acceleration factors and/or increasing the acceleration factors in the outer segments when the temperature changes faster; so as to achieve higher time resolution.

例如，当温度改变较快时，可通过减少加速系数较低的区段的大小和／或增加外部区段的加速系数来进一步减少相位编码线，从而获得更高的时间分辨率。

If the same ideal acceleration rate is applied in several sequential frames, the corresponding phase encoding lines in these frames are interleaved sampled.

如果在多个连续帧中应用相同的理想加速速率，对所述多个连续帧中的相位编码线进行交错采样。

Wherein, the step of adjusting the variable-density data sampling in K-space according to the determined ideal acceleration rate comprises: if the same ideal acceleration rate is applied in several sequential frames, the corresponding phase encoding lines in these frames are interleaved sampled.

其中，所述根据所确定的理想加速速率调整K空间的变密度数据采样包括：如果在多个连续帧中应用相同的理想加速速率，对所述多个连续帧中的相位编码线进行交错采样。

A new optical image encryption method using anamorphic fractional Fourier transform and double random phase encoding is proposed.

提出一种利用变形分数傅里叶变换和双随机相位编码对图像加密的方法。

If the same VD sampling mode in the K-space is applied in several sequential frames, the corresponding phase encoding lines in these frames are interleaved sampled.

如果相同的K空间VD采样模式应用在几个连续的帧中，这些帧中的相位编码线可以被交错采样。

In order to improve spatial resolution, and keep the FOV size, more steps of phase encoding are needed, so more time is required to sample the data of whole K-space.

为了改善空间分辨率，同时保持FOV尺寸，需要更多的相位编码步骤，从而需要更长的时间采集所有K空间数据。

Applying Inverse Discrete Fourier Transform in the frequency encoding direction of K-space, and selecting the phase encoding lines which contain the area of interest for reconstruction before reconstructing the data obtained by sampling; and

在重建采样得到的数据之前，在K空间的频率编码方向应用离散傅立叶逆变换，选择包含感兴趣区的相位编码线用于重建；

The following content firstly describes the VD sampling in K-space, the K-space is divided into several segments in the phase encoding direction.

首先介绍K空间VD采样，在相位编码方向上，K空间被分为几个区段。

As shown in Figure 6, the lateral axis is the phase encoding direction, the longitudinal axis is time axis, and the signals sampled from the phase encoding lines in the sequent frames on the time axis are interleaved arranged.

如图6所示，横轴为相位编码方向，纵轴为时间轴，在时间轴上相邻几帧的相位编码线上所采样的信号是交错排列的。