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管电压管电流和开机时间对CT图像质量的影响
Influence of tube voltage tube current and boot time on CT image quality
投稿时间:2023-02-23  修订日期:2023-04-12
DOI:
中文关键词:  CT扫描技术  管电压  管电流  开机时间  图像质量
英文关键词:CT scanning technology  Tube voltage  Tube current  Boot time  Image quality
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
作者单位邮编
刘雨欣 青岛理工大学理学院 266033
陈凡秀* 青岛理工大学理学院 266033
孙洁 青岛理工大学土木工程学院 266033
王远 青岛理工大学理学院 266033
王潇 青岛理工大学理学院 266033
于洋 青岛理工大学理学院 266033
顾焱吉 青岛理工大学理学院 266033
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中文摘要:
      CT扫描的图像质量与设置的参数和开机时间有关,扫描参数不同导致实验结果不同,开机时间对系统稳定性有一定影响,从而导致CT图像质量有差异。本文采用高分辨综合扫描分析系统nanoVoxel-2792扫描混凝土试件,对比不同管电压、管电流和设备开机时间对CT图像质量的影响。结论表明,不同管电压、管电流扫描的图像质量存在差异,电压值越高图像对比度越高,环状伪影越不明显,噪声越少;管电流对图像质量影响较小,电流值越大图像质量越好。针对本型号的CT,管电压设置为130kV,管电流设置为100μA扫描结果相对最好,CT运行时间对图像质量影响较小,本型号的CT开机2h后系统更加稳定。
英文摘要:
      The image quality of CT scanning is related to the parameters set and the startup time. Different scanning parameters lead to different experimental results, and the startup time has a certain impact on the system stability, resulting in differences in CT image quality. In this paper, a high-resolution comprehensive scanning analysis system nanoVoxel-2792 was used to scan concrete specimens, and the effects of different tube voltages, tube currents and equipment start-up time on CT image quality were compared. The results show that the image quality varies with different tube voltages and currents. The higher the voltage, the higher the image contrast, the less obvious ring artifacts and the less noise. Tube current has little influence on image quality, and the larger the current value, the better the image quality. For this model of CT, the tube voltage is set to 130kV and the tube current is set to 100μA. The scan result is relatively best. The running time of CT has little influence on the image quality.
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