Difficult-to-treat rheumatoid arthritis treated with Abatacept combined with Baricitinib: A case report

Figure 1 Doppler flow imaging and ultrasonographic pictures. A: Doppler flow imaging shows a few punctate blood flow signals in articular cavity (arrow); B: Ultrasonographic pictures showed that the synovial membrane of the joint was thickened, about 0.66 cm at the thickest point (bidirectional arrow); C: Doppler flow imaging shows abundant blood flow signal in articular cavity. D: Ultrasonographic pictures showed that the synovial membrane of the joint was thickened, about 1.07 cm at the thickest part (bidirectional arrow).