Heart Transplantation Clinical Trial
Official title:
Measurements of Myocardial Relaxation Time by MRI During Respiration
Measurement of T2 transversal relaxation time by magnetic resonance has a major interest in
cardiac imagery. It has been initially used for quantitative evaluation of heart viability
and more recently for edema characterization. It allows to prematurely detect a cardiac
transplant rejection. This technique needs successively around ten FSE sequences during
apnea. Weak reproducibility of successive apneas and discomfort of patient limit the
precision of this measurement and consequently its use in standard care. The ARTEMIS study
method allows the examination during free respiration without prolonging the duration of
examination compared to the examination during apnea. Moreover, image processing is
simplified and correction of respiratory movements renders results more reliable.
This is a pilot study of evaluation of ARTEMIS technique of image reconstruction. ARTEMIS is
a method of MRI image reconstruction for measurements of T2 transversal relaxation. It allows
to obtain diagnostic images without movement artifacts.
The primary objective si to show the feasibility of ARTEMIS method for measurement of
myocardial T2 relaxation time during free respiration in cardiac transplant patients.
The secondary objective is to collect quantitative data to compare ARTEMIS method of
measurement of T2 during free respiration and standard clinical practice during apnea.
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