Objective To evaluate CT findings of mediastinal venous abnormalities on enhanced chest CT.

目的进一步了解纵隔静脉异常的CT表现和意义。

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Plain chest radiograph and chest CT were insensitive to early bronchial mucosal abnormalities. CT was limited in diagnosis of vascular disease.

胸片与CT无法显示早期的气管内膜病变，对血管性病变的诊断价值有限。

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If technologists could not properly take a simple chest X-ray, how can they be expected to safely operate ct scanners or linear accelerators?

如果技术员不能准确进行一次简单的胸透检查，怎么能指望他们安全地操作CT扫描仪或线性加速器呢？

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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

Since 2004, the National Cancer Institute has been conducting trials to see if CT scans (and standard chest X-rays) can reduce mortality in smokers by detecting lung cancer early.

FORBES: Magazine Article

Additionally, I have a chest x-ray every six months or so and a yearly CT scan.

FORBES: Physician Organizations Voluntarily Heal Themselves To Save Healthcare Dollars

Then, in October, a CT scan showed that the tumor deposits in her left lung and chest and lymph nodes had grown substantially.

NEWYORKER: Letting Go