The Value of Dual-source CT Low-dose Turbo Flash Scan Pattern Iterative Reconstruction in Infantile Lung Infections
Objective To investigate the image quality,radiation dose,and clinical value of dual-source CT low-dose Turbo Flash scanning mode Advanced modeled iterative reconstruction(ADMIRE)in chest CT examinations of infants and children under non-sedation.Methods Prospective analysis of 90 infants and children who required chest CT examination for clinical suspicion of lung infection from March to August 2022 in our hospital.They were randomly divided into 100kV experimental group,70kV experimental group and conventional scanning control group,with 30 cases in each group.The experimental group all used Siemens 3rd generation dual-source CT,Turbo Flash scanning mode,and ADMIRE reconstruction;the routine scanning control group used Siemens 64-slice CT routine pediatric chest CT plain scanning protocol.The scan length,scan time,radiation dose and image quality of the children in the three groups were compared.Results The scanning time and radiation dose(SSDE)of the 100kV experimental group decreased by 88.48％and 84.74％,respectively,compared with that of the conventional scanning control group,with statistically significant differences(P＜0.01),and the difference was not statistically significant compared with that of the 70kV experimental group(P＞0.05).The images of the three groups met the requirements for clinical diagnosis,and the images of the conventional scanning control group showed different degrees of movement artifacts,and the image quality scores were lower than those of the 100kV experimental group and the 70kV experimental group.The quality scores of the three groups were lower than those of the 100kV experimental group and the 70kV experimental group,and the differences were statistically significant(P＜0.01).Conclusion The combination of low-dose Turbo Flash scanning mode and ADMIRE(level 3)reconstruction of chest CT in infants and children can significantly shorten the scanning time and reduce the motion artifacts,substantially reduce the radiation dose to the children,improve the image quality,and guarantee the quality of non-sedated chest CT examination in infants and children,under the premise of meeting the clinical diagnosis.
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