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      Spiral Computed Tomographic Angiography – A New Technique for Evaluation of Vascular Access in Hemodialysis Patients

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          Spiral computed tomographic angiography (CTA), a new noninvasive imaging technique, was used to study 10 arteriovenous fistulas (AVF) in 9 hemodialysis patients. Digital subtraction angiography (DSA) was also performed as a gold standard for comparison. AVF stenosis was graded by a four-point scale: grade 0, well patency of supplying artery, anastomosis and drainage vein; grade 1, <50% stenosis; grade 2, 50–70% stenosis; grade 3, 70–99% stenosis, and grade 4, total occlusion. We found CTA correlated closely to DSA in detecting both stenosis and dilatation of AVF and it spared all the shortcomings of DSA. CTA has the potential to be alternative for imaging of dialysis fistulas. Further studies will be performed to specify the role of CTA images in the assessment of the hemodialysis vascular access.

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          Three-dimensional spiral computed tomographic angiography: An alternative imaging modality for the abdominal aorta and its branches


            Author and article information

            Am J Nephrol
            American Journal of Nephrology
            S. Karger AG
            April 1998
            01 April 1998
            : 18
            : 2
            : 117-122
            Section of Nephrology, Departments of a Medicine, and b Radiology, Veterans General Hospital-Taipei, National Yang-Ming University, Taipei, Taiwan/ROC
            13319 Am J Nephrol 1998;18:117–122
            © 1998 S. Karger AG, Basel

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            Figures: 3, Tables: 1, References: 19, Pages: 6
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            Clinical Study


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