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随着多层螺旋CT的快速普及和发展，CT检查频率正逐渐提高，CT辐射剂量越来越受到关注。许多低剂量CT扫描技术可以在保证CT图像质量满足诊断要求的前提下，降低辐射剂量。该文旨在介绍低电压及自动管电流调节低剂量CT扫描技术的临床应用，并对低剂量CT技术的发展前景进行展望。“,”With the rapid development of multi-slice spiral CT, the frequency of CT examination is increasing.CT radiation dose has drawn more attention from the public.Many low-dose CT scan techniques can maintain the image quality and reduce radiation dose.Here is to make a review of the clinical applica-tions of low-kilovoltage and automatic tube current modulation and an outlook on low-dose CT scan tech-nique.