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《Radiologic Practice》 2003-08
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Multislice helical CT virtual endoscopy of lung cavity:a preliminary experience

HE Feng,YUE Jian guo,CAI Yi,et al.Department of Imaging,the Fourth People′s Hospital of Suzhou University,Wuxi 214062,P.R.China  
Objective:To explore the technique and clinical application of multislice helical CT virtual endoscopy (CTVE) in evaluation of lung cavity disease.Methods:13 patients with lung cavities were examined by multislice helical CT scanning.CT virtual endoscopy (CTVE) was reconstructed with 3D navigator software on the GE AW 4.0 workstation. Results: In the cavities of lung cancer CTVE showed irregular inner wall with various size of nodular lesions (n=8).CTVE showed rough inner wall with columnar,sawtooth like and crater like appearance in the cavities of lung abscess (n=3). In the cavity of lung tuberculosis CTVE showed smooth regular inner wall without nodular lesion (n=2).CTVE could clearly show 3D images of inner wall of the cavity,when the diameter was greater than 3cm.By adjusting threshold value and expanding visual angle,CTVE can also clearly show 3D images of lung cavities whose diameter was between 1.5~3.0cm.CTVE was very difficult to demonstrate 3D images of lung cavities whose diameter was smaller than 1.5cm.Conclusion:CT virtual endoscopy of lung cavity is an important supplement to conventional CT,but it can't make the diagnosis indepen dently and must combine together with the CT source images and other reconstructed images.
【CateGory Index】: R816.41
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