Purpose: Camera technology has advanced over the last 20 years and cameras now display results with better resolution and accuracy. Digital technology and colour displays can be easily calibrated to temperature ranges. The applications of these cameras are expanding rapidly and the purpose of this project was to evaluate their potential use in cardiac surgery. Methodology: A Teledyne C3 - X infrared camera from FLIR was used to assess myocardial temperature changes and graft patency during coronary artery bypass grafting. Myocardial temperature was assessed in 10 minute increments following antegrade administration of Del Nido Cardioplegia. Graft patency assessment was performed following completion of the Internal thoracic artery (ITA) distal anastomosis at baseline and in 30 second intervals for 2 minutes. The myocardial warming and the graft patency was evident in the form of typical patterns of colour change. Results: 36 patients undergoing isolated, elective coronary artery bypass grafting were assessed. Myocardial temperature demonstrated typical patterns of regional warming with the inferior surface warming first, then the lateral surface, finally the anterior surface and atria. Graft patency was discernible as long as a temperature gradient existed between the myocardium and the systemic temperature (ITA flows). Conclusions: A simple reproducible method of assessing myocardial temperature change as well as graft patency was demonstrated using the latest generation of infrared cameras.