Renal failure
Bilateral peripheral CT venography for evaluating central venous lesions in dysfunctional arteriovenous fistulas: feasibility, safety, and radiation dose in hemodialysis patients
By Zhang H, Liu H, Zou Z and 4 others.
Abstract
Objectives
Central venous stenosis and occlusion are major causes of arteriovenous fistula (AVF) dysfunction in hemodialysis patients. This study aimed to evaluate the feasibility, safety, radiation exposure, and anatomical findings of bilateral peripheral CT venography for central venous assessment in patients with dysfunctional AVFs.
Methods
This single-center retrospective cohort study included 46 consecutive hemodialysis patients with dysfunctional AVFs who underwent bilateral peripheral CT venography between August 2023 and June 2025. Technical success, procedure-related adverse events, radiation dose parameters, central venous lesion characteristics, and agreement with available comparative imaging modalities were analyzed. Comparative imaging findings from puncture-based angiography and/or duplex ultrasonography were assessed descriptively.