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Fusion imaging for guidance of pulmonary arteriovenous malformation embolisation with minimal radiation and contrast exposure

Published online by Cambridge University Press:  01 March 2024

Catalina Vargas-Acevedo
Affiliation:
Department of Pediatric Cardiology, University of Colorado, The Heart Institute, Children’s Hospital Colorado, Aurora, CO, USA
Ernesto Mejia
Affiliation:
Department of Pediatric Cardiology, University of Colorado, The Heart Institute, Children’s Hospital Colorado, Aurora, CO, USA
Jenny E. Zablah
Affiliation:
Department of Pediatric Cardiology, University of Colorado, The Heart Institute, Children’s Hospital Colorado, Aurora, CO, USA
Gareth J. Morgan*
Affiliation:
Department of Pediatric Cardiology, University of Colorado, The Heart Institute, Children’s Hospital Colorado, Aurora, CO, USA
*
Corresponding author: G. J. Morgan; Email: drgarethjmorgan@gmail.com

Abstract

Hereditary haemorrhagic telangiectasia is an inherited disorder characterised by vascular dysplasia that leads to the development of arteriovenous malformations. Pulmonary arteriovenous malformations occur in approximately 30% of patients with haemorrhagic telangiectasia. Given the complex characteristics of haemorrhagic telangiectasia lesions, the application of three-dimensional fusion imaging holds significant promise for procedural guidance and decrease in contrast and radiation dosing. We reviewed all patients who underwent transcatheter approach for pulmonary arteriovenous malformation occlusion with fusion image guidance from June 2018 to September 2023 from a single centre. A total of nine cases with haemorrhagic telangiectasia and transcatheter occlusion of pulmonary arteriovenous malformations using fusion imaging were identified. Five (56%) were male, mean age at procedure was 15.7 years (10–28 years) and mean number of pulmonary arteriovenous malformations intervened was three per patient (1–7). Two of the cases were complex repeat embolisations. The mean fluoroscopy time was 40.6 min (10.7–68.8 min), with mean contrast dose of 28.8 mL (11–60 mL; mean of 0.51 mL/kg) and mean radiation dose of 66.3 mGy (25.6–140 mGy; mean of 40.5 mGy/m2). There were no complications reported during the procedures, with no additional interventions necessary. Fusion imaging in pulmonary arteriovenous malformations embolisation for patients with haemorrhagic telangiectasia is feasible and has the potential to reduce contrast and radiation doses. To our knowledge, we describe the lowest radiation and contrast doses per patient using fusion imaging technology reported in the literature to date.

Type
Original Article
Copyright
© The Author(s), 2024. Published by Cambridge University Press

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