Ultrasound in rheumatology

The utility of ultrasound in the assessment, diagnosis and management of rheumatic disease is broadening. In addition to being a useful adjunct to joint examination, ultrasound now plays a significant role in the diagnosis of giant cell arteritis, therapeutic joint aspiration and intra-articular injection, and detection of extra-articular manifestations of connective tissue disease. The non-invasive diverse function of ultrasonography, together with relative ease of use, makes it an attractive tool to a practising rheumatologist. In comparison to other imaging techniques, for example, computed tomography and magnetic resonance imaging, it is inexpensive, quick to use and accessible in the clinic to inform decision-making and disease management. Large, multicentre trials validating ultrasonography in rheumatic disease have consolidated its place in the toolbox of rheumatologists.