Now Indian-based companies are moving into an wider range of services: reading CT-scans and X-rays, processing legal documents and helping with animation.

不仅如此，印度的公司已经开始插手更加宽泛的服务领域：读取CT扫描以及X射线，处理法律文书以及进行动画制作。

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The NLST is the first trial with sufficient numbers of participants using a randomized design to enable the comparison of mortality differences between spiral CT and chest X-ray, Aberle said.

NLST则是第一次包含大量随机指定的受试者的实验，使得在螺旋CT成像和X射线胸透之间做死亡率的比较成为了可能。

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Participants were randomly assigned to receive three annual screenings with either the low-dose spiral CT or the standard chest X-ray.

参与者被随机地指定做一种每年一次共三次的影像学检查——低剂量螺旋CT或标准X射线胸透。

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A less invasive procedure known as a virtual colonscopy is done with a CT scan that passes x-rays through a patient's abdomen.

VOA: standard.2010.04.07

But some doctors say the CT scan exposes patients unnecessarily to harmful radiation, as much radiation as a patient might receive from 400 chest x-rays.

VOA: standard.2010.04.07

Now Indian-based companies are moving into an wider range of services: reading CT-scans and X-rays, processing legal documents and helping with animation.

ECONOMIST: Schumpeter

Philips filled it with big-ticket medical equipment like magnetic resonance imagers, CT scanners and X-ray devices.

FORBES: Magazine Article

In fact, while the low-risk patients might not receive any benefit from the test, there is at least some risk from radiation--which is higher for a CT angiogram than a traditional X-ray.

FORBES: Magazine Article