Anders Svensson1, Michael A Fischer2, Kerstin Cederlund3, Peter Aspelin3, Bertil Leidner3, Torkel B Brismar3. 1. Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Stockholm, Sweden; Department of Radiology, Karolinska University Hospital in Huddinge, Stockholm, Sweden. Electronic address: anders.svensson@ki.se. 2. Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Stockholm, Sweden; Department of Radiology, Karolinska University Hospital in Huddinge, Stockholm, Sweden; Institute of Diagnostic and Interventional Radiology, University Hospital Zurich, Zurich, Switzerland. 3. Division of Medical Imaging and Technology, Department of Clinical Science, Intervention and Technology at Karolinska Institutet, Stockholm, Sweden; Department of Radiology, Karolinska University Hospital in Huddinge, Stockholm, Sweden.
Abstract
BACKGROUND: To evaluate the function of arteriovenous (AV) dialysis fistula using dynamic computed tomography (CT) and time-resolved 3-dimensional (3D) volume rendering (VR). METHODS: Seven patients referred for angiographic CT examination of the AV dialysis fistula were enrolled. Twenty-four grams of iodine were administered intravenously (iomeprol 400 mg I/mL at 6 mL/sec) followed by a 50-mL saline flush. Dynamic scanning was performed for 15-24 sec. CT images were then postprocessed on a dedicated workstation creating time-resolved 3D VR images and movies. RESULTS: All studies showed good image quality showing pathology in 6 of 7 patients. Unexpected findings were observed in 1 patient, aneurysm (n = 1). Radiation dose was 5 mSv. CONCLUSIONS: The function of AV dialysis fistula can be visualized using dynamic CT and time-resolved 3D VR.
BACKGROUND: To evaluate the function of arteriovenous (AV) dialysis fistula using dynamic computed tomography (CT) and time-resolved 3-dimensional (3D) volume rendering (VR). METHODS: Seven patients referred for angiographic CT examination of the AV dialysis fistula were enrolled. Twenty-four grams of iodine were administered intravenously (iomeprol 400 mg I/mL at 6 mL/sec) followed by a 50-mL saline flush. Dynamic scanning was performed for 15-24 sec. CT images were then postprocessed on a dedicated workstation creating time-resolved 3D VR images and movies. RESULTS: All studies showed good image quality showing pathology in 6 of 7 patients. Unexpected findings were observed in 1 patient, aneurysm (n = 1). Radiation dose was 5 mSv. CONCLUSIONS: The function of AV dialysis fistula can be visualized using dynamic CT and time-resolved 3D VR.