How will doctor know if you have inflammation in heart maybe..chest xray?

Myocarditis: Myocarditis is inflammation of the heart muscle. It can be suspected on the basis of ecg; elevated inflammatory markers (crp;esr); detection of antibodies against pathogens known to cause myocarditis; elevation of cardiac enzymes (heart damage markers: troponin, ck). While the gold standard remains biopsy, cardiac MRI is a noninvasive test that can both diagnose myocarditis and guide the biopsy!