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. 2014 Jan 8;16(1):R5. doi: 10.1186/ar4431

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Copyright © 2014 Ramírez et al.; licensee BioMed Central Ltd.

This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Representative images of ultrasound-defined synovitis in assessed joints. (A) Radiocarpal joint, longitudinal view: synovial hypertrophy (SH) grade 2 and power Doppler ultrasound (PDUS) signal grade 3. (B) Proximal interphalangeal joint, longitudinal view: SH grade 2 and PDUS signal grade 2. (C) Knee joint: parapatellar recess, transversal view: SH grade 2 and PDUS signal grade 2. (D) Metacarpophalangeal joint, longitudinal view: SH grade 2 and PDUS signal grade 3.