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. 2017 Oct 11;28(3):1046–1053. doi: 10.1007/s00330-017-5016-4

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© The Author(s) 2017

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 2 — (a) This shows an image of a metacarpophalangeal joint (MCPJ) in a patient with an inflammatory arthritis and a symptomatic joint. Even with the Power Doppler gain turned right up and a low scale, resulting in much noise (white arrows), there remains no vascular signal within the joint to support an active synovitis. (b) There is much vascularity seen with Superb Microvascular Imaging (SMI) within the joint with fine spatial resolution (arrows). This would therefore denote an active synovitis in keeping with the patient’s symptoms and also elevated erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP)