Validation of Fibrosis Quantification Using T1 Mapping Against Histology as Reference and Comparison With Fibrosis Biomarkers

Public Assistance-Hospitals of Marseille (AP-HM)

Status

Completed

Conditions

Myocardial Fibrosis

Treatments

Device: RMI

Biological: blood sample

Other: myocardial biopsy

Study type

Interventional

Funder types

Other

Identifiers

NCT02834104

2011-30

2011-A01395-36 (Other Identifier)

Details and patient eligibility

About

Myocardial fibrosis is recognized as the pathologic entity of extracellular matrix remodeling. Diffuse, reactive fibrosis is increasingly recognized in a variety of conditions despite the absence of ischemia. Regardless of the etiology, fibrosis leads to increased myocardial stiffness thereby promoting cardiac dysfunction. This dysfunction may present clinically with symptoms of cardiac failure although this is often a subclinical disease. Various imaging modalities and collagen biomarkers have been used as surrogate markers to assess the presence, extent, and turnover of myocardial fibrosis. Techniques using echocardiography, cardiac magnetic resonance, and nuclear imaging have been developed to detect early features of systolic and diastolic left ventricular dysfunction and impaired contractile reserve. Further identification of diffuse reactive fibrosis may be possible with evolving cardiac magnetic resonance and molecular techniques. The goal of this protocol is to validate cardiac magnetic resonance imaging as a new tool for fibrosis quantification against histology as standard of reference.

Enrollment

31 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

All patients who require surgical aortic valve replacement , which will benefit from an MRI to measure fibrosis in the months preceding the surgery.
Patient submitted to the social security scheme
Patient agreeing to participate in the study and who signed the informed consent.

Exclusion criteria

A history of myocardial
Unstable Patients requiring treatment with catecholamines.
hepatocellular insufficiency of alcoholic origin
Severe renal impairment
Appearance before examining coronary syndrome at high risk, defined according to international recommendations.
History of known allergy to gadolinium at diagnosis
Pregnant or lactating
Patient < 18 years