In the past few decades, the use of cardiac rhythm management (CRM) devices has increased worldwide due to the increase in life expectancy and technological developments (e. g., cardiac resynchronization therapy) that have extended their indications (1-4). When imaging is required in patients with CRM devices, computed tomography (CT) is the preferred modality because magnetic resonance imaging has been generally contraindicated (5-7). CT scanning technology is ubiquitous and over the past 15 years has become routine in the evaluation of neurologic, respiratory, cardiovascular, gastrointestinal, and other diseases. Therefore, an increase in the number of patients with CRM devices undergoing CT scanning at least once in their lifetime is also expected.