Gunther van Loon graduated from Ghent University, Belgium, in 1992 and has worked at Ghent University, Department of Large Animal Internal Medicine, ever since. In 2004 he became ECEIM Diplomate and in 2011 Associate Member of ECVDI. In 2001 he finished his PhD on “Atrial pacing and experimental atrial fibrillation in equines”. He is author or co-author of about 190 A1 publications and 24 book chapters, and gave about 240 presentations at international congresses. In 2015 he received the British Equine Veterinary Association (BEVA) award for ‘Clinical Research’ (Liverpool, UK) and in addition the prestigious Merial Applied Equine Research Award for outstanding research regarding ‘Advances in Equine Cardiology’, awarded by the World Equine Veterinary Association (WEVA) (Guadalajara, Mexico). Gunther van Loon is head of the department of Large Animal Internal Medicine at Ghent University and the Equine Cardioteam Ghent. He is Past-President of the Belgian Equine Practitioners Society (BEPS). His major interests are in the field of Equine Internal Medicine, especially all aspects of cardiology (arrhythmias, electrophysiology, cardiac pacing, 3D electro-anatomical mapping, radiofrequency ablation of arrhythmias, echocardiography, TDI, 2D ST, ICE, biomarkers), vascular diseases and thoracic and abdominal ultrasound.