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'structures': [47], 'associated': [49], 'pathology.': [50], 'It': [51], 'has': [52], 'emerged': [53], 'as': [54, 117, 136], 'a': [55], 'powerful': [56], 'tool,': [57], 'which': [58], 'enables': [59], 'not': [60], 'only': [61], 'synovitis': [64, 90, 106], 'effusion,': [66], 'but': [67], 'also': [68, 111, 147], 'quantification,': [70], 'detailed': [71], 'characterization,': [72], 'noninvasive': [74], 'monitoring': [75], 'processes.': [78], 'The': [79], 'purpose': [80], 'this': [82], 'article': [83], 'is': [84], 'to': [85, 92, 121, 128], 'summarize': [86], 'pathophysiology': [88], 'review': [93], 'qualitative,': [97], 'semiquantitative,': [98], 'quantitative': [100], 'MRI': [101, 116, 142], 'fluid.': [109], 'We': [110], 'discuss': [112], 'utility': [114], 'outcome': [119], 'measure': [120], 'assess': [122], 'treatment': [123], 'response,': [124], 'particularly': [125], 'with': [126], 'respect': [127], 'osteoarthritis': [129], 'rheumatoid': [131], 'arthritis.': [132], 'Emerging': [133], 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