CTICasesMicra Leadless Pacemaker
Imaging findings
Fluoroscopy and CT images demonstrate a tiny, capsule-shaped leadless pacing device deployed directly against the endocardium of the right ventricular apex. The device features small, flexible nitinol tines that anchor it firmly into the right ventricular myocardium.
Key takeaways
The Medtronic Micra is a miniaturized, leadless pacemaker designed to be implanted transvenously directly into the right ventricle. Recognizing the normal radiographic appearance and intracardiac position of these leadless pacing systems is essential for radiologists to avoid misidentifying them as foreign bodies, embolized devices, or other pathology.
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