“…Synovial fluid of joints showing monosodium urate crystals under polarized light microscopy is the gold standard for the diagnosis of gout [ 10 ]. For some atypical sites such as the spine, heart, lungs, and other organs, the biopsy is difficult, but for sites such as sternoclavicular joints, sternocostal joints, etc., tissue biopsy can accurately diagnose gout [ 12 ]. Given the high specificity of dual-energy CT for the detection of urate crystals and its advantages of non-invasiveness, reproducibility, and accurate assessment of atypical sites, it is considered a promising clinical screening tool for gout [ 13 ].…”