自动跟踪手动触发技术256层CT诊断小儿先天性心脏病  

Automatic tracking combined with manual triggering technique on 256-multislice CT in diagnosis of congenital heart disease in children

作　　者：曹希明[1] 黄美萍[1] 郑君惠[1] 巫梓斌[1] 温孟皇[1] 

机构地区：[1]广东省医学科学院广东省人民医院放射科,广东广州510080

出　　处：《中国医学影像技术》2012年第4期710-713,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨自动跟踪手动触发技术在256层CT小儿先天性心脏病(CHD)成像中的应用价值。方法对58例超声提示或临床疑诊CHD的患儿使用自动跟踪手动触发技术进行256层CT心脏成像,测量增强后左、右心室CT值,并对心脏腔室及大血管的显示进行评分。结果 58例患儿左心室平均CT值为(585.26±132.91)HU,右心室平均CT值为(592.81±146.47)HU,差异无统计学意义(P>0.05)。心脏腔室及大血管显示评分:52例(52/58,89.66%)3分,4例(4/58,6.90%)2分,2例(2/58,3.45%)1分。结论在256层CT小儿CHD成像中采用自动跟踪手动触发技术可使心脏各腔室及大血管均匀强化,在上腔静脉及右心系统无明显高浓度对比剂放射状伪影,具有良好的应用价值。Objective To investigate the value of automatic tracking combined with manual triggering technique in 256- multislice CT diagnosis of congenital heart disease （CHD） in children. Methods Totally 58 children with suspected CHD underwent 256-MSCT. Bolus tracking was used, CT value of ventricles were measured, and the image quality of heart chambers and trunk vessels was evaluated. Then CT values were compared between right and left ventricles. Results The average CT value of left ventricle was （585.26±132.91）HU, of right ventricle was （592.81±146.47）HU （P〉0.05）. For the scoring of the manifestation of heart chambers and trunk vessels, 52 cases （52/58, 89.66%） gained 3, 4 cases （4/ 58, 6.90%） gained 2 and 2 cases （2/58, 3. 45%） gained 1. Conclusion Automatic tracking combined with manual triggering technique is useful in 256-MSCT diagnosis of CHD in children.

关 键 词：体层摄影术 X线计算机 心脏疾病 自动跟踪 手动触发 

分 类 号：R541.1[医药卫生—心血管疾病] R814.42[医药卫生—内科学]