Right Adrenal Venography Findings correlated with C-arm CT for Selection During C-arm CT-assisted Adrenal Vein Sampling in Primary Aldosteronism

Purpose This study was designed to evaluate retrospectively the efficacy of C-arm CT to confirm right adrenal vein catheterization during adrenal vein sampling (AVS) and to correlate adrenal venography findings with C-arm CT and/or biochemical results for right adrenal vein selection. Methods Forty-two consecutive primary aldosteronism patients (M:F = 21:21; age: 29–70 years) underwent C-arm CT assisted sequential AVS. After catheterization of right adrenal vein, C-arm CT was performed to confirm catheter position. Catheter was repositioned when right adrenal gland was not opacified. Radiological images, medical records, and biochemical results were reviewed for technical/biochemical success rates and complications. Right adrenal venography findings of pinnate pattern, visualization of renal capsular vein, and retroperitoneal vein other than renal capsular vein were correlated with C-arm CT and/or biochemical results for right adrenal vein selection. Results Both the technical and biochemical success of AVS was achieved in 40 patients (95.2 %). C-arm CT failed due to catheter instability in one, and adrenal/vena cava cortisol gradient was