Hereditary haemochromatosis (HHC) is a frequent disease in Brittany (5 to 7‰), responsible first for biological disorder in blood iron parameters and minor clinical disorders, before evolving to potential life-threatening consequences such as diabetes, liver cirrhosis and congestive heart failure. The improvement of screening and treatments made those severe affections rare enough not to evaluate myocardial iron overload a systematic part of the starting check-up. Nonetheless this myocardial iron overload might have severe implications on cardiac function on a long term basis. A single trial was conducted on limited number of patients with 1.5 Tesla MRI, which showed a myocardial iron overload (defined by a myocardium T2\* value \<20ms) in 19% of the subjects. The main objective of this study is to precisely estimate cardiac iron overload in treatment naive patients with newly diagnosed HFE hereditary haemochromatosis with a 3 Tesla MRI, more sensitive than the 1.5 Tesla one, in order to later appreciate its correlation with cardiac morbidity in HHC.
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Myocardial T2* values in haemochromatosis compared to healthy volunteers
Timeframe: Day 1