1Rubin G D,Beanlien C F,Argiro V,et al.Perspective volume rendering of CT and MR images:applications for endoscopic imaging[J].Radiology,1996,199:321.
2Applegate K E,Dardinger J T,Lieber M L,et al.Spiral CT scanning technique in the detection of aspiration of LEGO foreign bodies[J].Pediatr Radiol,2001,31:836.
3Vining D J,Gelfand D W,Bechtold R E,et al.Technical feasi-bility of colon imaging with helical CT and virtual reality[J].AJR,1994,162(suppl):104.
4Jolesz F A,Lorensen W E,Kikinis R,et al.Virtual endoscopy:three-dimensional rendering of cross-sectional images for endoluminal visualization[J].Radiology,1994,193:469.
