Elevation of CK is an indication of acute muscle damage (i.e trauma, rhabdomyolysis, myocardial infarction, myositis etc.), which was in our study induce by X-ray radiation.26 In addition, increased levels of transaminases (AST and ALT) indicate a liver damage which supports our assumption that irradiation affected metabolism of multiple organs. Here, GPT is linked to myocardial infarction.