It is very important to represent the region and its relationship between them in segmented images in image analysis, which is the bases of postprocessing.
在影像分析过程中，分割图像上的区域及其相互关系的表示是十分重要的。它是后继分析处理过程的基础。
Conclusion: Image quality of CTPA is mainly influenced by scan and postprocessing technique. Rational application of imaging technique attributes to improved diagnostic accuracy of PE.
结论：CTPA的成像质量主要受扫描技术及图像后处理技术的影响，合理应用成像技术可进一步提高PE诊断准确率。
Conclusion: Image quality of CTPA is mainly influenced by scan and postprocessing technique. Rational application of imaging technique attributes to improved diagnostic accuracy of PE.
结论：CTPA的成像质量主要受扫描技术及图像后处理技术的影响，合理应用成像技术可进一步提高PE诊断准确率。
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