Coronary Flow Reserve Evaluation in PET and in MRI Scanner in Heart Transplanted Patients : Comparison With Multi-detectors Scanner

Aim of the study. The aim of the study is to compare the quantitative (using 15O-H2O PET) and semi-quantitative (using perfusion CMR) assessment of coronary reserve to the presence of coronary artery lesions documented by multidetector CT coronary angiography. Methods. 30 patients with heart transplantation \> 3 yrs will be included in two heart transplantation centers (Caen and Rouen university hospitals) Expected results. * To demonstrate that quantitative analysis of coronary reserve using 15O-H2O PET allows the assessment of cardiac allograft vasculopathy * To establish the feasibility of adenosine stress CMR in this population * To show a relationship between coronary lesions demonstrated using MDCT and the extent of coronary reserve impairment assessed using cardiac functional imaging (PET and CMR).