Cardiac (CMRI) Assessment of Acromegaly

Patients with acromegaly have left ventricular (LV) hypertrophy and dysfunction on echocardiography, but only very few studies have been performed using cardiac magnetic resonance imaging (CMRI), currently the reference modality is assessment in cardiac geometry function. In addition, no data are available on right ventricular (RV) and atrial structure and function. The pathophysiology of the cardiac involvement in acromegaly may be related to increase myocardiac water content and/or interstitial myocardiac fibrosis.

The main objective of sthe study is to compare the myocardial water content in patients with acromegaly and in healthy volunteers. Secondary objectives of the study are to evaluate :

• interstitial fibrosis and the structure and the function of LV and RV in acromegalic patients in comparison with healthy volunteers;
• the reversibility of the cardiac involvement (water content, fibrosis, LV and RV structure and function) after efficient treatment of acromegaly;
• the elasticity of aorta in acromegalic patients in comparison with healthy volunteers and with the post-treatment state. Twenty acromegalic patients will be included in order to dispose of 15 patients that will completed the study and the same number of age- and BMI-adjusted healthy volunteers will be included.

Inclusion criteria

• Active acromegaly as defined by the usual diagnostic criteria (de novo patients or patients uncontrolled by previous treatments).
• Healthy volunteers matched for age, sex and BMI with the patients of the group 1

Exclusion criteria

• History of coronary heart disease (acute or chronic myocardial ischemia)
• Acute or chronic renal failure (creatinin clearance 30 mL/min/l,73m2)
• Contraindication of MRI
• Hypersensitivity to gadolinium
• Pregnancy