The cumulative dose from an initial noncontrast CT scan followed by a CT perfusion study, for example, isn't easy to assess.

从初诊平扫CT到CT灌注扫描的进一步检查，总剂量可能难以评估。

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Results:Location, size, shape, density, margin and peritumorous edema could be shown by plain CT scan and state of blood flow by enhance CT scan.

结果：平扫可显示肿瘤的发生部位、大小、形态、密度、边缘及瘤周水肿，增强扫描可显示病变的血运情况。

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The geometric error of axial image reconstruction increases with the increase of CT scan slice thickness, due to CT partial volume effect.

重建CT图像的前后方向的几何误差是随着扫描层厚增加而增加，主要是由于CT扫描的部分容积效应影响。

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Concussions can be mild, but doctors may order a CT scan to look for a more serious injury.

VOA: special.2009.10.28

A computed tomography,or CT,scan provides detailed images of the inner body.

VOA: special.2010.06.29

every year, the government is under pressure to make an official recommendation on how much radiation is safe during a CT scan.

VOA: standard.2010.04.07

Each point in each slice of a CT scan is essentially a separate test, and the chance that a whole body CT scan is going to turn up something somewhere that looks funny is nearly 100%.

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In Wednesday's study, patients who already had cancer diagnoses or who developed cancer within two years of a CT scan were excluded, to decrease the likelihood that risk calculations would be inflated by patients who would have developed cancer without getting a CT scan.

WSJ: Childhood CT Scans Pose Cancer Risk

The good news is that there is also a CT scan available to detect fatty deposits that constitute soft plaque, called a Coronary CT Angiography (CTA).

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