Xu Jinghong, Han Ping, Liu Fang, Feng Gansheng, Tian Zhiliang
Postgraduate Department of Internal Medicine, General Hospital of Chinese People's Armed Police Forces, Beijing 100039, China.
Chin Med J (Engl). 2002 Oct;115(10):1545-7.
To assess the possibility of using spirometrically controlled computed tomography (CT) to test pulmonary ventilation function.
Spiral CT scans under the control of a spirometer were performed on 30 healthy adults. Spiral CT scan was performed at 50% vital capacity (VC) with an 8 mm slice thickness. Mean attenuation values and pixel index (PI) of lung regions were evaluated with semiautomatic evaluation software.
There were significant differences in PI values between four pixel intervals.
Spirometrically controlled spiral CT with semiautomatic evaluation software is an accurate and reproducible method of measuring lung density and PI, which has the possibility of indicating pulmonary ventilation function.
评估使用肺活量计控制的计算机断层扫描（CT）来检测肺通气功能的可能性。
对30名健康成年人进行了在肺活量计控制下的螺旋CT扫描。在肺活量（VC）的50%时进行螺旋CT扫描，层厚8毫米。使用半自动评估软件评估肺区域的平均衰减值和像素指数（PI）。
四个像素区间的PI值存在显著差异。
使用半自动评估软件的肺活量计控制螺旋CT是一种测量肺密度和PI的准确且可重复的方法，有可能用于指示肺通气功能。
