激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2010年
1期
94,96
,共2页
体层摄影术%X线计算机%冠状动脉%血管造影%辐射剂量
體層攝影術%X線計算機%冠狀動脈%血管造影%輻射劑量
체층섭영술%X선계산궤%관상동맥%혈관조영%복사제량
Tomography%X-ray computed%coronary artery%angiography%radiation dose
目的:评价心电图(electrocardiograph,ECG)电流调制技术在冠状动脉CTA中的应用价值.方法:84例行冠状动脉CT血管造影(CTAngiography,CTA)检查的患者随机分为A、B两组,每组42例,A组采用传统方式扫描,B组采用ECG电流调制技术.对两种扫描所得图像的质量、噪声、CT剂量指数(CT dose index,CTDI)有效剂量(effective dose ED)进行统计学分析.结果:两组图像质量评分及噪声评分分别为:A组(3.58±0.22)分和(23.13±3.45)分,B组(3.56±0.25)分和(23.27±3.32)分,两组间差异不明显(P>0.05).A组CTDI和ED分别为:(93.03±4.32)mGy和(35.53±2.01)mSv,B组为(58.36±3.24)mGy和(20.00±2.77)mSv,B组的辐射剂量较A组明显降低(P<0.01).结论:在不明显影响图像质量的情况下,ECG电流调制技术能有效降低冠状动脉CTA辐射剂量,可以作为冠状动脉CTA的常规辅助技术.
目的:評價心電圖(electrocardiograph,ECG)電流調製技術在冠狀動脈CTA中的應用價值.方法:84例行冠狀動脈CT血管造影(CTAngiography,CTA)檢查的患者隨機分為A、B兩組,每組42例,A組採用傳統方式掃描,B組採用ECG電流調製技術.對兩種掃描所得圖像的質量、譟聲、CT劑量指數(CT dose index,CTDI)有效劑量(effective dose ED)進行統計學分析.結果:兩組圖像質量評分及譟聲評分分彆為:A組(3.58±0.22)分和(23.13±3.45)分,B組(3.56±0.25)分和(23.27±3.32)分,兩組間差異不明顯(P>0.05).A組CTDI和ED分彆為:(93.03±4.32)mGy和(35.53±2.01)mSv,B組為(58.36±3.24)mGy和(20.00±2.77)mSv,B組的輻射劑量較A組明顯降低(P<0.01).結論:在不明顯影響圖像質量的情況下,ECG電流調製技術能有效降低冠狀動脈CTA輻射劑量,可以作為冠狀動脈CTA的常規輔助技術.
목적:평개심전도(electrocardiograph,ECG)전류조제기술재관상동맥CTA중적응용개치.방법:84례행관상동맥CT혈관조영(CTAngiography,CTA)검사적환자수궤분위A、B량조,매조42례,A조채용전통방식소묘,B조채용ECG전류조제기술.대량충소묘소득도상적질량、조성、CT제량지수(CT dose index,CTDI)유효제량(effective dose ED)진행통계학분석.결과:량조도상질량평분급조성평분분별위:A조(3.58±0.22)분화(23.13±3.45)분,B조(3.56±0.25)분화(23.27±3.32)분,량조간차이불명현(P>0.05).A조CTDI화ED분별위:(93.03±4.32)mGy화(35.53±2.01)mSv,B조위(58.36±3.24)mGy화(20.00±2.77)mSv,B조적복사제량교A조명현강저(P<0.01).결론:재불명현영향도상질량적정황하,ECG전류조제기술능유효강저관상동맥CTA복사제량,가이작위관상동맥CTA적상규보조기술.
Objective:To evaluate the clinical application value of electrocardiograph modulated milliampere in the coronary computer tomography angiography.Methods: 84 patients under CTA were randomly divided into two groups, group A with conventional scan served as control, and group B employed electrocardiograph modulated milliampere scan. Image quality,noise, CT dose index (CTDI) and effective dose (ED) of the two groups were statistical analyzed respectively. Results: The image quality scores and noise scores of the two groups were : ( 3.58±0.22 ) points and (23.13 ± 3.45 ) points in group A, and ( 3.56 ± 0.25 ) points and ( 23.27 ± 3.32) points in group B, there were no significant difference between A and B (P > 0.05) . The CTDI and ED in the two groups were:A (93.03± 4.32 ) mGy and ( 35.53 ± 2.01 ) mSv, B (58.36 ± 3.24) mGy and (20.00 ± 2.77) mSv respectively, the radiation doses in group B were significantly lower than A ( P < 0. 01 ). Conclusion: Technique of electrocardiograph modulated milliampere can reduce radiation doses effectively in coronary CTA, it can be a routine assistive technique for coronary CTA.
