胸部能谱成像与常规CT扫描辐射剂量与图像质量对比评价  

Comparative Evaluation of Radiation Dose and Image Quality between Chest Energy Spectrum Imaging and Conventional CT Scanning

作　　者：朱凤婷[1] 陈嘉雯 卓水清 ZHU Feng-ting;CHEN Jia-wen;ZHUO Shui-qing(Sun Yat-sen University Cancer Center, Guangzhou 510060, China;State Key Laboratory of Oncology in South China, Guangzhou 510060, China;Department of Radiology, Collaborative Innovation Center for Cancer Medicine, Guangzhou 510060, China)

机构地区：[1]中山大学肿瘤防治中心,广州510060 [2]华南肿瘤学国家重点实验室,广州510060 [3]肿瘤医学协同创新中心影像科,广州510060

出　　处：《影像技术》2019年第3期56-59,共4页Image Technology

摘　　要：目的:评价比较胸部能谱成像与常规CT扫描辐射剂量与图像质量。方法:选择我院2017年9月-2018年6月收治的需进行胸部CT检查的45例患者作为观察对象,均予以常规CT扫平扫以及胸部能谱成像扫描,对两种CT扫描方式图像质量、辐射剂量方面的差异进行评比,以确定最佳扫描方式。结果:常规CT平扫的CTDlvol、DLP、ED与能谱动脉期成像进行比较,差异无明显的统计学意义(P>0.05);常规CT平扫的上述指标与能谱静脉期成像进行比较,具有显著性统计学差异(P<0.05);常规CT平扫的图像噪声评分、总体图像质量评分与能谱动脉期呈现之间无统计学差异(P>0.05),与能谱静脉期成像之间存在统计学意义(P<0.05)。结论:相比于常规CT扫描,胸部动脉期能谱成像辐射剂量与之相当,虽然胸部静脉期能谱成像辐射剂量较高,但图像质量良好,临床可根据患者病情需要合理选择扫描方式。Objective: To evaluate the radiation dose and image quality of chest energy spectrum imaging and conventional CT scanning. Methods: Forty-five patients who underwent chest CT examination from September 2017 to June 2018 in our hospital were selected as subjects. All patients underwent routine CT scan and chest energy spectrum imaging. Differences in radiation doses were compared to determine the best scanning method. Results: CTDlvol, DLP, ED and conventional arterial phase imaging of conventional CT were compared. The difference was not statistically significant(P>0.05). The above indexes of conventional CT plain scan were compared with energy spectrum venous imaging. There was significant statistical difference(P<0.05);there was no statistical difference between the image noise score, the overall image quality score and the energy spectrum of the conventional CT scan (P>0.05), and the venous phase imaging of the energy spectrum. There was statistical significance(P<0.05). Conclusion: Compared with conventional CT scan, the radiation dose of thoracic artery phase spectrum imaging is equivalent. Although the radiation dose of thoracic venous phase imaging is higher, the image quality is good, and the clinical scanning method can be reasonably selected according to the patient’s condition.

关 键 词：常规CT扫描 胸部能谱成像 图像质量 辐射剂量 

分 类 号：R445.3[医药卫生—影像医学与核医学]