[Inflammatory Heart Disease: The Role of Multimodality Cardiac Imaging in Myocarditis and Pericarditis].

Myocarditis and pericarditis represent a broad spectrum of inflammatory heart diseases and are important differential diagnoses in patients presenting with chest pain, heart failure, or arrhythmias. Diagnosis is often challenging due to non-specific clinical presentation and biomarkers. Growing recognition of the clinical relevance of myocardial inflammation, together with accumulating evidence, has led to increased scientific and clinical attention. This is reflected in emerging concepts such as the introduction of the new term "inflammatory myocardial syndrome (IMPS)" in the recently published guidelines of the European Society of Cardiology (ESC). Notably, these are the first ESC guidelines to cover the full spectrum of inflammatory diseases of the myocardium and pericardium - marking an important paradigm shift in the field. Current ESC guidelines highlight the central role of multimodality cardiac imaging in the evaluation of myocardial inflammation. While echocardiography serves as a first-line tool, cardiac magnetic resonance imaging (CMR) is considered the non-invasive gold standard for tissue characterization. Nuclear imaging techniques such as positron emission tomography (PET) are increasingly relevant, particularly in specific entities such as cardiac sarcoidosis. This review highlights the practical role of multimodality imaging in the diagnostic work-up of myocardial inflammation, with emphasis on clinically relevant decision-making.