Head and Neck Imaging
Analysis of Low Dose CT Scanning Conditions and Image Quality of Children’s Airway Foreign Bodies
Author：LU Dao-yan, JIN Gang, ZHU Ying-li,et al.
affiliation：Department of Radiology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an 223300, Jiangsu Province, China
PDFAbstract
Objective To evaluate the effect of low dose MSCT scanning conditions on image quality for children's airway foreign bodies. Methods 60 patients with inhalation history of airway foreign bodies were randomly divided into 3 groups, and performed low-dose spiral CT scanning with the following parameters: 80/100/120kV, 30mAs, collimator of 1.5mm, pitch 1.15, and reconstructed the axial image, oblique coronal image and VR. The variance analysis was used to compare the age and dose length product (DLP) of the 3 groups of children and chi square test was used to analyze the data of image quality evaluation. Results There was no significant difference in age and the Image quality between the three groups, and there was significant difference between the three groups in CT scan dose length product. Conclusion Under the condition of low tube current, reducing the tube voltage(80kV) can reduce the radiation dose further and not affect the image quality.
【Keyword】MSCT; Low-dose; Airway; Foreign Body
【Chart number】R768.1+3
【Document Identification Number】A
【DOI】 10.3969/j.issn.1672- 5131.2017.06.019
Chinese journal of CT and MRI
th15Volume， th 6 Issue
2017Year06Month
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