Guidelines for musculoskeletal ultrasound in rheumatology

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Abstract
Newer US techniques, which are currently being evaluated, include colour and power Doppler imaging, which provide colour maps of tissues. Here the amount of colour is related to the degree of blood flow, which may be of use in assessment of vascular tissues as may occur in soft tissue inflammation.10 To increase further the sensitivity of power Doppler intravenous bubble contrast agents are under development.