**5.2 Radiological image tests**

The performance of radiological image tests will depend on the symptomatology that the patient presents, since they will provide information in those cases of complicated NBTE. In chest X-ray, we can observe data that suggest heart failure (cardiomegaly, pleural effusion, etc.). Cranial computed tomography (CT) and magnetic resonance (MR) imaging are very useful for the diagnosis of cerebral embolisms, since if we suspect an NBTE, multiple infarcts will be observed, widely distributed, heterogeneous in size, and mainly ischemic. Cardiac MR or positron emission tomography may help in the differential diagnosis.


#### **Table 2.**  *Culture-negative endocarditis causes.*
