Zhang Shuai, Chen Weibin, Wang Weidong, Yang Jie
The PLA Generator Hospital, Beijing, 100853.
Zhongguo Yi Liao Qi Xie Za Zhi. 2010 Nov;34(6):421-3.
The purpose of this study is to decide how to select the best scan parameters in low dose computed tomography screening.
Use 140 kV, 20 mA, 30 mA, 40 mA, 50 mA, 200 mA scanning to get the images' intensity resolution and high contrast resolution, and select the images which can meet the national standard, Then get the scan parameters when the mA is lowest. Scan 60 patients using the standard CT and low dose CT separately to get the scan images. After that, two senior radiology doctors were invited to evaluate the images' quality.
140 kV, 30 mA is the best scan parameters for lung cancer.
本研究的目的是确定如何在低剂量计算机断层扫描筛查中选择最佳扫描参数。
使用140 kV、20 mA、30 mA、40 mA、50 mA、200 mA进行扫描以获得图像的密度分辨率和高对比度分辨率，选择符合国家标准的图像，然后获取毫安值最低时的扫描参数。分别使用标准CT和低剂量CT对60例患者进行扫描以获得扫描图像。之后，邀请两位资深放射科医生评估图像质量。
140 kV、30 mA是肺癌筛查的最佳扫描参数。
