By adopting small pich and bigger pich value, the quality of CT images could be improved and the dose of radiation that patients take in would be reduced.
采用小的螺距，和较大的螺距值来扫描可以提高CT图像质量并减少病人所接受的辐射剂量。
By adopting small pich and bigger pich value, the quality of CT images could be improved and the dose of radiation that patients take in would be reduced.
采用小的螺距，和较大的螺距值来扫描可以提高CT图像质量并减少病人所接受的辐射剂量。
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