This work sought to further clarify the contribution of medical imaging in the follow-up of pacemakers and implantable cardioverter defibrillators. Right after implementing these devices, chest radiography must be performed in order to precisely evaluate the position of the leads and exclude potential complications. These images constitute the basis for early and late surveillance, thereby enabling the detection of anomalies that may explain any clinical symptoms or electric troubles. CT scanner or Doppler ultrasound may assist under certain circumstances.