在现代医学中，影像技术扮演着至关重要的角色，它不仅可以帮助医生诊断疾病，还能为治疗提供关键的信息支持。今天我们就来了解一下两种常见的医学影像技术——CT（Computed Tomography）扫描和MRI（Magnetic Resonance Imaging）检查。这两种技术各有优劣，但都可以用于疾病的筛查和诊断。

CT 扫描

CT 扫描是一种利用 X 射线的高科技成像方式。与传统的X光片相比，CT扫描可以提供更详细的图像信息，因为它会从多个角度对患者进行拍摄，然后将这些数据输入到计算机中生成三维图像。这种三维图像称为“断层扫描”或“切片”，医生可以通过它们观察到体内组织的细节。

CT扫描的主要优点包括： 1. 快速 - CT扫描通常只需要几分钟即可完成，这意味着患者的辐射暴露时间较短。 2. 准确 - 由于它可以产生详细的图像，因此有助于发现可能被传统X光遗漏的较小病变。 3. 广泛应用 - CT扫描可用于多种情况，例如癌症筛查（如CT screening for colon cancer or CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT 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for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT screening for CT 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