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. 2022 Aug 4;12(8):1891. doi: 10.3390/diagnostics12081891

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Patient examples. CT-S = conventional CT subtraction for 80 kVp, MSUS = musculoskeletal ultrasound of the wrist (Patient A) and of the metacarpophalangeal (MCP) joint V from the dorsal view (Patient B). Patient A: Imaging examples of a 75-year-old male patient with CPPD. CT-S and MSUS showed severe synovitis in the wrist (arrowhead) and on the processus styloideus ulnae (arrow). Patient B: Imaging examples of a 62-year-old man patient with seronegative rheumatoid arthritis. Severe synovitis was detected at the MCP V joint in CT-S and MSUS (arrows). Furthermore, CT-S showed severe tenosynovitis of the ring finger (arrowhead).