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. Methods Chest 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.
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.
WANG Guang-da, SHI Gao-feng, YANG Li, LI Yang, WANG Qi, DU Yu. Study on the Protective Effect of X-care Technique on Sensitive Organs of Patients with Chest CT Scan. China Medical Devices, 2017, 32(1): 84-86.
