[Imaging in crystal arthropathies].

Crystal arthropathies present a complex entity for radiological diagnostics, often reflecting rheumatologic and other diseases. Over the past decades, the evidence and applicability of various radiological techniques, with and without the use of ionizing radiation, have significantly evolved. This article provides an overview of the current evidence on the use of different modalities and their advantages and disadvantages for the diagnosis and therapy monitoring of crystal arthropathies, based on the latest guidelines from relevant professional societies. In addition to established methods such as X-ray, ultrasound and MRI, this work also addresses newer methods such as dual-energy computed tomography (CT) and photon-counting CT.