The progress of the gemstone spectral CT was introduced in clinical application. Review was executed from the aspects of energy spectrum technique and clinical application. The clinical application of the gemstone spectral CT was discussed in monochromatic imaging, materials decomposition, spectral curve, effective atomic number and analysis tool of the energy spectrum technique as well as in its clinical application to head, neck, chest, abdomen, musculoskeletal system and etc. Gemstone spectral CT could implement multi-parameter imaging and data analysis with analysis platform and tools and facilitate the qualitative and location diagnoses as well as treatment planning of the diseases, and thus could be promoted for comprehensive diagnosis, differential diagnosis, location diagnosis, postoperative imaging of iatrogenic metal implants, angiography, analysis on stone composition and etc of the tumors.%从单能量图像、能谱曲线、物质分离、有效原子序数及分析工具等方面对能谱技术进行了分析,并对能谱CT在头颈、胸、腹、骨肌系统等方面的具体应用进行了总结.提出能谱CT能综合应用分析平台及工具进行多参数成像及数据分析.指出该CT能够为疾病的精准定性、定位诊断和治疗方案制定提供更为可靠的信息及更多解决问题的思路和方案,可被用于肿瘤的综合诊断、鉴别诊断、定位诊断,医源性金属植入物术后成像、血管成像及结石成分分析等各方面,具有广阔的临床应用前景.
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