| 曾令明,孙全富,徐辉,等.低剂量CT中辐射防护策略探讨[J].中华放射医学与防护杂志,2026,46(5):439-444.Zeng Lingming,Sun Quanfu,Xu Hui,et al.Exploration of radiation protection strategies in low-dose CT[J].Chin J Radiol Med Prot,2026,46(5):439-444 |
| 低剂量CT中辐射防护策略探讨 |
| Exploration of radiation protection strategies in low-dose CT |
| 投稿时间：2026-04-03 |
| DOI：10.3760/cma.j.cn112271-20260403-00124 |
| 中文关键词: 低剂量CT 辐射防护 人工智能 光子计数CT |
| 英文关键词:Low-dose CT Radiation protection Artificial intelligence Photon-counting detector CT |
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| 中文摘要: |
| CT等电离辐射类医学影像技术的广泛应用,使辐射剂量的精准控制成为该领域的研究热点。本文基于低剂量CT (LDCT)的临床实践与研究,系统梳理了超低管电压、自动管电流调制及深度学习重建算法在降低辐射剂量中的应用价值及技术限度;同时探讨光子计数CT、正电子发射断层成像(PET)/CT和PET/磁共振(MR)等特殊成像技术的低剂量优化路径;结合最新循证医学证据,重新审视CT检查中敏感器官屏蔽防护的临床合理性及实际效能。为临床践行"合理可行尽量低"(ALARA)原则,实现辐射安全与诊断效能的最优平衡,以及辐射防护策略的科学化、个体化调整提供新的思路和循证依据。 |
| 英文摘要: |
| The widespread application of ionizing radiation-based medical imaging technologies such as CT has made precise control of radiation dose a research hotspot in this field. Based on clinical practice and research on low-dose CT (LDCT), this paper systematically reviews the application value and technical limitations of ultra-low tube voltage, automatic tube current modulation, and deep learning reconstruction algorithms in reducing radiation dose. It also explores low-dose optimization strategies for specialized imaging techniques, including photon-counting CT, PET/CT, and PET/MR. In light of the latest evidence-based medicine findings, the clinical rationality and practical efficacy of shielding protection for sensitive organs during CT examinations are re-evaluated. This review aims to support the clinical implementation of the ALARA principle, achieve an optimal balance between radiation safety and diagnostic performance, and provide new insights and evidence-based guidance for the scientific and individualized adjustment of radiation protection strategies. |
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