摘要
目的：分析总结冠状动脉CT血管造影前瞻性心电门控及Carek V技术的临床应用价值。方法：回顾分析80例冠状动脉CT血管造影的影像资料,其中前瞻性心电门控及Carek V技术扫描组40例,回顾性扫描组40例,均采用ECG管电流自动调制技术。采用双盲法对图像质量进行评价,对所有冠状动脉节段（直径≥1 mm）进行图像质量评分;统计所有患者冠状动脉CT血管造影检查的辐射剂量。结果：1回顾性扫描组的个人总辐射剂量1.862-9.772 m Sv,平均辐射剂量为5.47 m Sv;前瞻性心电门控及Carek V技术扫描组的个人总辐射剂量0.862-2.996 m Sv,平均辐射剂量为1.27 m Sv。2前瞻性心电门控及Carek V技术扫描组40患者评价冠脉543段,能够满足诊断的图像（≤3分）比例为95.44%,评价为优的冠脉节段比例为89.57%。回顾性扫描组40患者评价冠脉576段,能够满足诊断的图像（≤3分）比例为97.82%,评价为优的冠脉节段比例为90.66%。结论：冠状动脉CT血管造影前瞻性心电门控及Carek V技术应用可提供优秀的、满足临床诊断的影像;冠状动脉CT血管造影前瞻性心电门控及Carek V技术应用是减少辐射剂量的有效方式之一。
Objective： To analyze and conclude the clinical value of prospective ECG-gated CT and carekV technology of coronary artery angiography. Methods： Eighty cases of coronary CT angiography image data were retrospectively analyzed. Forty cases were prospective ECG-gated and CarekV technology scanning group, the other 40 cases were retrospective scanning group. Both groups were conducted ECG automatic current modulation technique.With the double-blinded method, the image quality of all segmental coronary （diameter≥1 mm） and radiation dose in two groups were evaluated. Results： The individual total radiation dose in retrospective scan group was 1.862 mSv to 9.772 roSy, the average was 5.47 mSv. The individual total radiation dose in prospective ECG-gated and CarekV technology scanning group was 0.862 mSv to 2.996 mSv, the average was 1.27 mSv. There were 576 segments obtained in retrospective scanning group, in which 97.82% achieved diagnostic criteria （≤3 points）, and there were 90.66% reached the excellent standard. In prospective ECG-gated and CarekV technology scanning group, there were 543 segments obtained, the rate of achieved diagnosis criteria was 95.44%, and 89.57% reached the excellent standard. Conclusion： The prospective ECG-gated CT and earekV technology in coronary CT angiography could provide excellent image which acheived clinical diagnostic standard and lower radiation dose.
出处
《大理学院学报（综合版）》
CAS
2015年第4期57-59,共3页
Journal of Dali University
