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收稿:2025-12-08,
修回:2026-03-11,
录用:2026-03-16,
纸质出版:2026-10-28
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重庆市医学会影像技术分会.宽体探测器冠状动脉CTA检查技术规范——重庆专家共识[J].重庆医科大学学报,2026,51(10):1361-1369.
.Technical specifications for wide-detector coronary computed tomography angiography:Chongqing expert consensus[J].Journal of Chongqing Medical University,2026,51(10):1361-1369.
重庆市医学会影像技术分会.宽体探测器冠状动脉CTA检查技术规范——重庆专家共识[J].重庆医科大学学报,2026,51(10):1361-1369. DOI: 10.13406/j.cnki.cyxb.004183.
.Technical specifications for wide-detector coronary computed tomography angiography:Chongqing expert consensus[J].Journal of Chongqing Medical University,2026,51(10):1361-1369. DOI: 10.13406/j.cnki.cyxb.004183.
目的
2
基于宽体探测器CT(wide-detector computed tomography,WDCT)单心动周期覆盖全心脏的技术优势,建立符合临床实际的WDCT冠状动脉CT血管成像(coronary computed tomography angiography,CCTA)标准化技术方案,以解决设备快速普及与规范缺失的矛盾,推动区域内影像检查的同质化与结果互认。
方法
2
由重庆市医学会影像技术分会组织影像技术及诊断专家,以国内外最新指南与专家共识为基础,结合重庆市医疗机构设备配置现状与临床需求,对WDCT CCTA全流程进行规范。内容涵盖适应证筛选、检查前准备、扫描方案优化、对比剂个体化应用、图像后处理及质量控制等关键环节。
结果
2
本共识明确了WDCT对心率及心律的高宽容度,指出β受体阻滞剂通常不建议常规使用;首选前瞻性心电门控,结合70~80 kVp低管电压、自动管电流调制技术及深度学习重建算法,以实现有效辐射剂量<1 mSv的理想目标;规范了硝酸甘油使用及对比剂个体化注射方案;界定了冠状动脉强化CT值(350~450 HU)与图像噪声[标准差(standard deviation,SD)≤30 HU]等质控标准。
结论
2
本共识将WDCT硬件特性与区域临床实践深度融合,提供了涵盖全流程的标准化操作指南与质量控制标准,有助于提升CCTA检查成功率,降低辐射剂量与对比剂用量,为实现地区影像结果互认及冠心病精准诊疗提供技术依据。
Objective
2
To establish a practical and standardized technical protocol for coronary computed tomography angiography (CCTA) using wide-detector computed tomography(WDCT) with the technical advantage of single-beat whole-heart coverage,with the aims of bridging the gap between rapid equipment adoption and the lack of unified standards,thereby promoting the homogenization of imaging examinations and the mutual recognition of imaging results within the region.
Methods
2
Organized by the Imaging Technology Branch of the Chongqing Medical Association,a panel of imaging technologists and diagnostic experts formulated this consensus. It is based on the latest Chinese and international diagnostic and treatment guidelines and expert consensuses,combined with the current status of equipment configuration and clinical needs in Chongqing medical institutions. The consensus standardizes the entire WDCT CCTA workflow,covering key steps such as indication screening,patient preparation,scanning protocol optimization,individualized contrast medium application,image post-processing,and quality control.
Results
2
This consensus clarifies the high tolerance of WDCT for variations in heart rate and rhythm,suggesting that the routine use of β-blockers is generally not recommended. Prospective electrocardiographic gating is recommended as the primary acquisition mode. Combined with a low tube voltage(70-80 kVp),automatic tube current modulation,and deep learning reconstruction algorithms,the protocol aims to achieve an effective radiation dose of <1 mSv. The use of nitroglycerin and individualized contrast medium injection protocols are standardized. Quality control benchmarks are defined,including the target coronary enhancement range(350-450 HU) and the acceptable image noise level(standard deviation≤30 HU).
Conclusion
2
By deeply integrating the hardware characteristics of WDCT with regional clinical practice,this consensus provides comprehensive standardized operational guidelines and quality control standards covering the entire workflow of WDCT CCTA. It is expected to improve the success rate of CCTA examinations,reduce radiation dose and contrast medium volume,and provide a technical foundation for the mutual recognition of regional imaging results and the precise diagnosis and treatment of coronary artery disease.
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