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。

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Opto-collection system is a core of X-ray Computed Radiography.

光影像仪的光采集系统是X光影像仪的核心。

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X-ray computed tomography (CT) reconstructions are often limited by metal artifacts from corrupted data.

射线CT系统的成像质量往往受到金属伪影的严重影响。

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The early use of fracking to get at reserves previously thought of as unrecoverable, shortly after the turn of the 21st century, came about after exploration companies began examining geologic formations using x-ray computed tomography, or CT scanners.

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The technique can provide excellent, detailed images of the body's soft tissue and is an alternative to using X-ray techniques such as computed tomography (CT).

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"To put that into context, 20mSv is the same dose you get from three computed tomography (X-ray) scans of your chest, roughly, " she told reporters.

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