The clinical application value of CARE kV combined with CARE Dose 4D techniques in the orbital CT scan

Objective:To explore the clinical application value of CARE Dose 4D(tube current regulation technique)combined with CARE kV(the smart kV scanning technology)in orbital CT scan,expecting to reduce the radiation dose.Methods:70 patients underwent plain orbital CT scan,they were randomly divided into two groups according to chronological sequence.In group A(n=35 cases),applied CARE Dose 4D technique was used only;In group B(n=35 cases),applied both CARE Dose 4D and CARE kV technique was used.Comparison of radiation dose and image quality(based on average CT values,Noise SD,SNR,CNR and quality score)between the two groups were made.Results:The difference of radiation dose between the two groups was statistically significant(P0.05);ED of group B was less than those of group A by around 16.9%.There were no significant differences between the two groups in average CT values,SD,SNR and CNR(P0.05);Also the image quality score and lesion detection rate demonstrated no significant difference among the two groups.Conclusion:On the premise of obtaining good quality of image for diagnosis,CARE kV combined with CARE Dose 4D technology can be applied in orbital CT scan,which will reduce about 15.9% radiation dose.