The article presents a case of subacute coronary artery thrombosis inv
estigated by classic methods, coronary angiography, and MRI. T1- and T
2-weighted images showed high signal Intensity within the lumen of the
right coronary artery corresponding to the methemoglobin content of t
he thrombus. Dynamic sequence images with intravenous gadolinium contr
ast agent displayed lack of right coronary artery enhancement, confirm
ing coronary occlusion. The coronarography revealed the same finding.
MRI appears to be a promising method of coronary thrombosis assessment
.