Causes of SBI
In this study, the all lesions were small and focal, therefore they were
presented as grade A or B lesions. Based on the shape and size of the
lesion, the etiology of SBI was interpreted as embolism due to
microdebris and air by MRI image reading. Even SBI identified in the
watershed region in 13 patients were believed to be caused by emboli
because of the shape of the SBI in the watershed region. Knipp and
colleague revealed that the cause of SBI after cardiac surgeries was
embolism in their study, and the mechanism of embolism involves
thromboemboli and air 8,11. Oher researchers revealed
that the cause of SBI after catheterization was air that was injected
and debris in the ascending aorta 13.