ISSN 1004-4140
CN 11-3017/P
Volume 18 Issue 2
Jun.  2009
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CHENG Ying, CAI Xin-qi, CHEN Jun-bin, JING Yang, GUAN Ji-tian. The Sinus Image of Reduction Dose in Children with Spiral CT[J]. CT Theory and Applications, 2009, 18(2): 79-82.
Citation: CHENG Ying, CAI Xin-qi, CHEN Jun-bin, JING Yang, GUAN Ji-tian. The Sinus Image of Reduction Dose in Children with Spiral CT[J]. CT Theory and Applications, 2009, 18(2): 79-82.
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The Sinus Image of Reduction Dose in Children with Spiral CT

  • 1. Department of Radiology, the Second Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China;

  • 2. Department of Emergency, the Second Affiliated Hospital, Medical College of Shantou University, Shantou 515041, China

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  • Received Date: December 22, 2008
  • Available Online: December 14, 2022
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    • Abstract
  • Objective:To reduce radiation dose and ensure sinus image quality in children with optimizing tube current.Materials and Methods:80 children were randomly divided into standard dose group and three low dose groups, in which tube voltage was constantly 120kV and tube current were 350mA, 235mA, 175mA, and125mA, respectively.The mean DLP and ED of each group were measured, compared with mean ED in standard dose group, and then decrease of ED in three low dose groups were calculated separately.The image quality in all groups was blindly evaluated.Results:Compared with standard dose group, ED of other three groups decreased by 23.9%, 42.7%, and 60.2%, respectively.For image quality in all groups, there were no differences found.All sinus images reached desired diagnostic quality.Conclusion:With reduced tube current of 125mA, low dose CT of sinuses in children can yield diagnostic image quality;further radiation dose are reduced about 60%.
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