80kVp扫描联合基于原始数据的迭代重建技术在儿童副鼻窦CT检查中的应用  

Application of 80kVp scan and sinogram affirmed iterative reconstruction technique in children paranasal sinus CT examination

作　　者：曾宪春[1] 刘莉[1] 韩丹[2] 徐聆峰[1] 王玉权[1] 

机构地区：[1]贵州省人民医院影像科,贵州贵阳560004 [2]昆明医科大学第一附属医院医学影像科,云南昆明650032

出　　处：《中国医学影像技术》2015年第9期1406-1409,共4页Chinese Journal of Medical Imaging Technology

摘　　要：目的探讨Flash双源CT低管电压80kVp扫描联合基于原始数据的迭代重建(SAFIRE)技术在儿童副鼻窦CT检查中的价值。方法疑鼻窦炎行CT扫描患儿60例,A组30例采用100kVp扫描,FBP重建;B组30例采用80kVp扫描,SAFIRE重建,强度选择3级;其余条件不变。比较两组的有效剂量及图像质量的客观指标(CT值、图像噪声、SNR、CNR)、主观评分、诊断效能等。结果 A、B两组有效剂量、图像噪声、SNR、CNR差异均有统计学意义(P均<0.05)。两组图像的主观评分差异无统计学意义(P>0.05)。两组诊断结果与临床诊断结果差异均无统计学意义(P均>0.05)。结论在儿童副鼻窦扫描中采用Flash双源CT 80kVp扫描联合SAFIRE重建技术,在显著降低辐射剂量的同时,还可保证图像质量及诊断效能,值得临床推广。Objective To discuss the value of Flash dual source CT low tube voltage 80 kVp scanning and sinogram affirmed iterative reconstruction（SAFIRE）in paranasal sinus of children.Methods Sixty suspected sinusitis children underwent Flash dual source CT scan;30cases were in group A by 100 kVp scan with FBP reconstruction;30cases were in group B by 80 kVp scan with SAFIRE reconstruction and selection intensity level of 3;other conditions unchanged.Effective dose,objective indicators（including CT value,image noise,SNR and CNR）,subjective score,diagnosis efficiency were compared between two groups.Results Effective dose,noise,SNR and CNR were significant difference between two groups（all P〈0.05）.The subjective scores of two groups had no statistically significant difference（P〉0.05）.The diagnostic results of both groups showed no statistical significance compared with clinical diagnosis（both P0.05）.Conclusion Application of dual source CT 80 kVp Flash scanning combined with SAFIRE reconstruction in children with paranasal sinus can significantly reduce the radiation dose,and guarantee the image quality and diagnostic efficiency,which is worth of clinical promotion.

关 键 词：副鼻窦疾病 体层摄影术 X线计算机 图像处理 计算机辅助 

分 类 号：R765.2[医药卫生—耳鼻咽喉科] R814.42[医药卫生—临床医学]