Left atrium and pulmonary vein imaging using sub-millisiviert cardiac computed tomography: Impact on radiofrequency catheter ablation cumulative radiation exposure and outcome in atrial fibrillation patients

International Journal of Cardiology

1 December Dec 2016 5 months ago
  • Pontone G, Andreini D, Annoni A, Russo E, Guglielmo M, Mushtaq S, Fusini L, Formenti A, Fassini G, Riva S, Tondo C, Agostoni P, Bartorelli AL, Pepi M

The outcome of radiofrequency catheter ablation (RFCA) of atrial fibrillation (AF) has improved thanks to left atrium (LA) anatomy reconstruction by cardiac computed tomography (CCT). A new model-based iterative reconstruction algorithm (MBIR) provides image noise reduction achieving effective radiation dose (ED) close to chest X-ray exposure.

Aim of this new study was comparing RFCA procedural characteristics, AF recurrence and radiation exposure between patients in whom RFCA was guided by CCT image integration with MBIR versus a CCT standard protocol.

CCT with MBIR allows accurate reconstruction of LA anatomy in AF patients undergoing RFCA with a sub-millisievert ED and comparable success rate of RFCA as compared to a standard CCT scan protocol.

Reference

  1. Pontone G, Andreini D, Petulla M, Annoni A, Guaricci AI, Innocenti E, Russo E, Guglielmo M, Mushtaq S, Baggiano A, Beltrama V, Fusini L, Segurini C, Conte E, Formenti A, Fassini G, Riva S, Tondo C, Agostoni P, Bartorelli AL, Pepi M. Left atrium and pulmonary vein imaging using sub-millisiviert cardiac computed tomography: Impact on radiofrequency catheter ablation cumulative radiation exposure and outcome in atrial fibrillation patients. Int J Cardiol 2016; 228:805-811. Go to PubMed