| 心电脉冲改良技术降低双源CT冠状动脉成像的辐射剂量 |
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| 引用本文： | 唐菲.心电脉冲改良技术降低双源CT冠状动脉成像的辐射剂量[J].中国医学影像学杂志,2011,19(6):416-419. |
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| 作者姓名： | 唐菲 |
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| 作者单位： | 中国人民解放军兰州军区乌鲁木齐总医院,新疆乌鲁木齐,830000 |
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| 摘 要： | 目的探讨心电脉冲(ECG-Pulsing)技术和Mindose技术在双源CT冠状动脉成像中降低辐射剂量的作用。资料与方法按照不同扫描方法随机将拟行双源CT扫描的136例可疑冠心病患者分为2组,标准组49例采用标准的ECG-Pulsing扫描,优化组87例采用优化后的ECG-Pulsing条件合并Mindose技术扫描。记录扫描后平均容积CT剂量指数(CT dose index volume,CTDIvol)和剂量长度乘积(dose length product,DLP),计算有效辐射剂量(effective dose,ED)。扫描图像质量采用双盲法评分。两组CTDIvol值、ED值和图像质量评分比较采用t检验。结果优化组CTDIvol值及ED值明显低于标准组(42.82±18.00mGy vs64.86±10.63mGy,11.72±5.16mSv vs17.26±3.36mSv),差异有统计学意义(t=-8.975、t=-7.575,P<0.01),平均剂量降低约33.41%。标准组和优化组冠状动脉各段图像质量平均评分比较,差异无统计学意义(3.56±0.38分vs3.60±0.24分,P>0.05)。结论双源CT冠状动脉成像时应用ECG-Pulsing合并Mindose优化技术,能在保证图像质量的前提下大幅度降低辐射剂量。
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| 关 键 词： | 冠状血管 体层摄影术 X线计算机 辐射剂量 |
ECG-Pulsing Combined with Mindose Technique in the Radiation dose Reduction of Dual-Source CT Coronary Angiography |
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| TANG Fei.ECG-Pulsing Combined with Mindose Technique in the Radiation dose Reduction of Dual-Source CT Coronary Angiography[J].Chinese Journal of Medical Imaging,2011,19(6):416-419. |
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| Authors: | TANG Fei |
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| Affiliation: | TANG Fei Department of Medical Imaging,Urumqi General Hospital,Lanzhou Command,PLA,Urumqi,Xinjiang,830000 |
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| Abstract: | Purpose To evaluate the value of ECG-pulsing combined with Mindose technique in the radiation dose reduction of dual-source CT(DSCT)coronary angiography. Materials and Methods 136 cases of suspected coronary artery disease were divided into two groups randomly, standard group with standard ECG-pulsing(49 cases), optimized group with ECG-pulsing combined with Mindose technique(87 cases). CT dose index volume(CTDIvol)and dose length product(DLP)were obtained automatically, and the effective doses(ED)were calc... |
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| Keywords: | Coronary vessels Tomography X-ray computed Radiation dosage |
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