Title: The Value of 64 Multi-detector CT Coronary Angiography in Diagnosing Coronary Artery Fistula
Abstract:Objective To evaluate 64 detector spiral CT coronary angiography in diagnosing the coronary artery fistula(CAF)and to discuss CT manifestations of CAF.Materials and Methods Multi detector spiral CT en...Objective To evaluate 64 detector spiral CT coronary angiography in diagnosing the coronary artery fistula(CAF)and to discuss CT manifestations of CAF.Materials and Methods Multi detector spiral CT enhanced scanning was performed in eleven patients with CAF.Based on individual heart rate,different sector scanning technique was employed in order to get optimal reconstructed images.Three dimensional reconstructions,including volume rendering(VR),maximum intensity projection(MIP),curved planar reformation(CPR) and multi-planar reconstruction(MPR),were carried out.The features of 3 D images were compared with the findings of coronary angiography(CAG).The CT features were analyzed and the value of CT combined with various post processing techniques for effectively detecting and diagnosing CAF was evaluated.Results A total of 21 fistulas were found in 11 patients with CAF.The origins of the fistulas included left coronary artery(n=8),right coronary artery(n=4),both left and right coronary artery(n=8) and left subclavian artery(n=1).A total of nine outlets of the fistulas were confirmed,which included main pulmonary artery(n=9),left ventricle(n=2),left atrium(n=1) and right ventricle(n=1).In judging the inlet and outlet of CAF,VR and MPR techniques were superior to MIP.There were significant difference in visualizing the inlet and outlet of CAF between the techniques.Every technique had its own advantage and disadvantage.Conclusion CAF may originate not only from the right coronary artery,but also from the left coronary artery or from both coronary arteries.In most cases,the outlet of CAF is the pulmonary artery or the right ventricle with low pressure.Multi detector spiral CT scanning combined with various post-processing techniques can precisely and stereoscopically display the coronary artery fistula,which is quite consistent with CAG.These three dimensional reconstructed images can preoperatively provide detailed anatomical information which is very useful for the surgery.Read More
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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