The value of 64-slice spiral CT angiography based on pre-contrasted raw data in diagnosing pulmonary arteriovenous fistula
- VernacularTitle:64层螺旋CT强化前肺血管成像对肺动静脉瘘的诊断价值
- Author:
Bao-Ting CHAO
;
Ruo-Zhen GONG
;
Le-Bin WU
;
Xi-Ming WANG
;
Jie CHEN
;
Wu-Xian GONG
;
- Publication Type:Journal Article
- Keywords:
Lung;
Arteriovenous fistula;
Tomography,X-ray computed
- From:
Chinese Journal of Radiology
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the value of 64-slice spiral CT angiography based on pre- contrasted raw data in diagnosing pulmonary arteriovenous fistula.Methods 64-slice spiral CT plain scan and enhanced scan was performed in 16 patients with pulmonary arteriovenous fistula,pulmonary angiography based on pre-contrast and post-contrast raw data was performed respectively,including maximum intensity projection(MIP),shaded-surface display(SSD),and volume rendering(VR).According to the results of angiocardiography and surgical findings,comparson of the three methods was made in the display of PAVF in pre-contrast and post-contrast phase images.Results 8 of the 16 PAVF cases were single lesion,8 cases were multi-lesions.30 PAVF lesions were found in all the patients.MIP,SSD and VR based on pre-contrast raw data displayed PAVF lesions in 20,14,and 22,respectively.The combination of the 3 methods based on pre-contrast raw data could show 26 PAVF lesions.MIP,SSD,and VR based on post-contrast raw data displayed PAVF lesions in 24,18,and 30,respectively.The combination of the 3 methods based on post- contrast raw data could show 30 PAVF lesions.Conclusion 64-slice spiral CT angiography based on pre- contrasted raw data can clearly show the position,number,and shape of PAVF lesions,which is of great value in diagnosing PAVF.
