A type of X-ray called spiral computed tomography or CT can find lung cancer early, but it is expensive and also finds non-cancerous lesions that are expensive and risky to test.
一种立体计算机体层扫描能够发现早期肺癌，但费用昂贵，并能发现一些检测昂贵、有风险的非肿瘤病变。
2
Opto-collection system is a core of X-rayComputed Radiography.
光影像仪的光采集系统是X光影像仪的核心。
3
X-raycomputed tomography (CT) reconstructions are often limited by metal artifacts from corrupted data.