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The value of computed tomography angiography in evaluating autogenous arteriovenous fistula dysfunction in

Lihua Ma1, Lijiao Wen1, Xiaofei Xing1

  • 1Department of Radiology, Liaoning Electric Power Central Hospital, Shenyang City, Liaoning Province, China.

The International Journal of Artificial Organs
|April 17, 2026
PubMed

Insights

Computed tomography angiography (CTA) effectively diagnoses arteriovenous fistula (AVF) restenosis with high accuracy. CTA findings correlate with improved blood flow and functional recovery after interventions.

Area of Science:

  • Vascular Surgery
  • Diagnostic Imaging
  • Nephrology

Background:

  • Arteriovenous fistulas (AVFs) are crucial for haemodialysis access.
  • Postoperative restenosis is a common complication affecting AVF function.
  • Accurate assessment of AVF stenosis is vital for timely intervention.

Purpose of the Study:

  • To evaluate the diagnostic performance of computed tomography angiography (CTA) for postoperative AVF restenosis.
  • To assess the clinical value of CTA in guiding interventions.
  • To analyze the correlation between stenosis severity and post-intervention outcomes.

Main Methods:

  • Single-centre retrospective study of 102 patients with dysfunctional AVFs.
  • CTA analysis of morphological parameters and prognostic data.
  • Comparison of CTA findings with digital subtraction angiography (DSA) in a diagnostic subset.

Main Results:

  • CTA demonstrated 88% accuracy in detecting significant stenosis (⩾50%) compared to DSA.
  • Moderate to severe stenosis was prevalent (98%), often at the anastomotic site (83%).
  • Intervention led to successful blood flow restoration (94%) and good functional recovery (86%), correlating with stenosis severity.

Conclusions:

  • CTA is an effective tool for assessing AVF stenosis and guiding interventions.
  • CTA findings correlate with successful post-intervention outcomes.
  • Further research is needed to establish the long-term prognostic value of CTA.
Abstract

Keywords:
Computed tomography angiographyarteriovenous fistulahaemodialysisprognostic analysisrestenosis

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