中国医疗设备2017，Vol.32Issue(1)：84-86,3.DOI:10.3969/j.issn.1674-1633.2017.01.022
X-care技术在胸部CT扫描中对患者敏感器官保护作用的研究
Study on the Protective Effect of X-care Technique on Sensitive Organs of Patients with Chest CT Scan
摘要
Abstract
ObjectiveTo discuss the protective effect of the X-care technique on the sensitive organs of patients when conducting chest scan with dual source CT.MethodsChest CT scan was conducted by dual source CT set with X-care scan mode and body surface detection method was used to measure the radiation dose of patients. Six detecting points were selected as regions of interest below the xiphoid of each patient, with 3 selected from surface side and 3 from dorsal side. Each detecting point has two detectors. The testing results were divided into two groups of surface side and dorsal side to compare their radiation dose, difference between surface side and dorsal side of single patient and depletion rate, as well as noise difference of anterior and posterior sides of both lungs. Statistics software SPSS13.0 was used to compare the radiation dose difference between two surface side and dorsal side, and result was statistically significant (P<0.05).ResultsThe surface side irradiation dose was 250.30mSv, the radiation dose of the dorsal side was 409.43mSv, and the average radiation dose was (7.82±2.91) mSv and (12.80±5.29) mSv. The surface side radiation dose reduced about 38.9% compared with that of the dorsal side (P<0.05). The anterior image noise was (82.55+3.75) Hu, and the noise was (82.55±3.75) Hu (P>0.05) in the posterior part of the lung. Signal to noise ratio were (12.34±3.43) and (12.45±3.42) (P>0.05) respectively, and the difference between image noise and signal to noise ratio has not statistical significance. ConclusionBy using X-care scan technique of dual source CT, on the premise of maintaining image quality, can significantly reduce radiation dose to the surface side of the subjects and protect the sensitive organs of subjects to some extent.关键词
X线计算机/体层摄影技术/辐射剂量/双源CT/X-care技术/胸部扫描Key words
X-ray computer/tomography/radiation dose/dual source CT/X-ray technique/chest scan分类
医药卫生引用本文复制引用
王光大,时高峰,杨丽,李扬,王琦,杜煜..X-care技术在胸部CT扫描中对患者敏感器官保护作用的研究[J].中国医疗设备,2017,32(1):84-86,3.基金项目
河北省医学科学研究重点课题（ZL 20140177）。 （）
