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. 2022 Jan 1;12(2):542–557. doi: 10.7150/thno.64340

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(A) Photograph of the PAT system. (B) Photograph of the finger joint through different sections. (C)-(D) PA recovered 3D absorption coefficient image of the corona section for normal and OA joints, respectively. (E)-(F) PA recovered 3D absorption coefficient image of the sagittal section for normal and OA joints, respectively. CL: cartilage; DIP: distal interphalangeal joint; DP: distal phalanx; IP: intermediate phalanx; SF: synovial fluid. Figures adapted with permission from Ref. 96. Copyright © 2011, American Association of Physicists in Medicine.