Cardiacmri "mildly dilated left ventricle (lvedvi 78cc/m2).reduced left ventricle mass with prominent trabeculations (lvmass indexed 42g/m2) without meeting the cmr criteria for left ventricular non compaction (nc/c ratio 2:1)." what does this mean?

This means you don't have the rather rare noncompaction cardiomyopathy. I'm unclear as to whether impaired longitudinal strain with diastolic dysfunction is present on this study. I have more experience with echocardiography in these matters. Your cardiologist will explain the findings best and can correlate them with your history & physical findings.