| 乳腺癌颈胸腹盆增强CT:能谱与常规扫描模式比较 |
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| 引用本文： | 王宏,李玲,逯瑶,于克祯,王国选,姜蕾,李飒英.乳腺癌颈胸腹盆增强CT:能谱与常规扫描模式比较[J].CT理论与应用研究,2022,31(4):489-498. |
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| 作者姓名： | 王宏 李玲 逯瑶 于克祯 王国选 姜蕾 李飒英 |
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| 作者单位： | 北京医院放射科，国家老年医学中心/中国医学科学院老年医学研究院, 北京100730 |
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| 摘 要： | 目的:通过与常规扫描方案比较，探讨能谱扫描方案在乳腺癌患者颈胸腹盆联合增强CT中的应用价值。方法:回顾性分析我院因乳腺癌行颈胸腹盆联合增强CT的女性患者40例，其中行常规颈胸腹盆增强CT患者20例，能谱颈胸腹盆增强CT患者20例。比较两种扫描方案动脉期和延迟期辐射剂量；通过测量颈胸部淋巴结的信号噪声比（SNR）及对比噪声比（CNR）以及主观评分，评价两种扫描方案的图像质量。结果:常规和能谱颈胸腹盆联合增强CT扫描方案的动脉期和延迟时期的辐射剂量具有统计学差异，能谱的辐射剂量更低；颈部动脉期淋巴结的SNR值、CNR值在常规和能谱扫描之间不存在统计学差异；胸部动脉期腋窝淋巴结的SNR值、CNR值在常规和能谱扫描之间存在统计学差异；颈部淋巴结常规和能谱扫描的主观评分不存在统计学差异，胸部腋窝淋巴结常规和能谱扫描的主观评分存在统计学差异，能谱主观评分更高，主观评分一致性较好，Kappa值为0.916。结论:能谱颈胸腹盆联合增强CT扫描方案的辐射剂量更低，扫描流程更简便，患者配合度更高，对于胸部腋窝淋巴结的显示更清晰，加之能谱扫描可以提供多参数的图像数据，因此具有重要的应用推广价值。
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| 关 键 词： | 能谱CT 常规CT 颈胸腹盆增强CT 颈部淋巴结 |
| 收稿时间： | 2022-05-24 |
Neck-chest-abdomen-pelvis Combined Enhanced CT in Breast Cancer Patients: Comparison between Dual-energy and Conventional Scanning Mode |
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| Institution: | Department of Radiology, Beijing Hospital; National Center of Gerontology; Institute of Geriatrics Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China |
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| Abstract: | Objective: To investigate the application value of dual-energy scanning scheme in neck-chest-abdomen-pelvis combined enhanced CT in patients with breast cancer patients by comparing with the conventional scanning scheme. Methods: A retrospective analysis was performed on 40 female patients with breast cancer who underwent neck-chest-abdomen-pelvis combined enhanced CT in Beijing hospital, including 20 patients scanned by conventional protocol and 20 patients scanned by dual-energy protocol. The radiation doses in arterial phase and delayed phase were compared between the two modes. The image qualities were evaluated by measuring signal-to-noise ratio (SNR), contrast noise ratio (CNR) and subjective scoring. Results: The radiation doses in arterial phase and delayed phase of conventional and dual-energy protocol were statistically different, and the radiation dose of dual-energy protocol was lower. There was no significant difference between the two modes in SNR and CNR of cervical arterial lymph nodes. There was significant difference between conventional and dual-energy mode in SNR and CNR value of axillary lymph nodes in thoracic artery phase. There was no significant difference in the subjective scores of conventional and dual-energy protocol of cervical lymph nodes. However, there was significant difference in the subjective scores of conventional and dual-energy protocol of axillary lymph nodes. The subjective score of dual-energy protocol was higher and the consistency of subjective score was better with Kappa value of 0.916. Conclusion: Compared with conventional scanning scheme, dual-energy scanning scheme for neck-chest-abdomen-pelvis combined enhanced CT shows lower radiation dose, simpler scanning process, higher patient cooperation degree, clearer display of axillary lymph nodes, which has important clinical application and promotion value. |
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