Imaging the Inflammatory Response in Checkpoint Inhibition Myocarditis

In this patient, clinical suspicion of ICI-induced myocarditis was raised because of elevated troponin. MRI (left) reveals faint late gadolinium enhancement in basal lateral wall (red arrows). ¹⁸F-FDG PET/MRI (right) shows clear tracer accumulation in this area (blue arrows), which is indicative of active myocarditis.