Figure 4.

Cardiac magnetic resonance imaging with 4-chamber view

a) of a patient with Lyme carditis along with first-degree AV block and complete left bundle-branch block: after gadolinium administration, multilocular late-enhancement (LE), situated subepicardially, mid-myocardially and subendocardially.

b) In the short-axis view, LE is primarily situated in the mid-myocardium; however, the septum is also affected, possibly the substrate of the affected conduction system (yellow arrow). In addition, slight enhancement of the pericardium (red arrow)