Methods Forty six patients suffered from silicosis received lung spiral scans at 50% vital capacity (VC), and all of them were imaged with high resolution CT (HRCT) at carina and carina +/- 5 cm at 20% VC and 80% VC.

• 方法 4 6例矽肺病人在 5 0%25肺活量 (VC)状态下行全肺螺旋CT扫描 ,在 2 0%25VC、80%25VC呼吸水平下于隆突层、隆突上、下各 5cm处行高分辨率CT(HRCT)扫描。