由于受带标记线心脏核磁共振图像中标记线强梯度的影响，对左心室内膜的提取变得非常困难。
However, affected by the strong gradient from tagged lines in tagged cardiac MR images, extracting endocardium boundaries makes itself very difficult.
高R值强转折梯度带很可能是岩石层的剧烈变形带，多对应于地震高强度、高频度活动区；
An abrupt gradient zone with higher R values may be a radical deformed zone of the lithosphere , it mostly corresponds to an seismic active region with higher intensity and frequency;
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