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二级参考文献4
1李松年 唐光健.现代全身CT诊断学[M].北京：中国医药科技出版社,2002.79-147.
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3Rao PM ,Rhea JT,Novelline RA,et al.Helical CT technique for the diagnosis of appendicitis evaluation of a focused appendix CT examition[J].Radiology,1997 ,202(1):139-144.
4Ghiatas AA,Chopra S,Chintapalli KN,et al.CT of the normal appendix and acute appendicitis[J].Eur Radial,1997,7(7):1043-1047.
