Dual-energy CT based low flow rate, low dose CTPA and lung perfusion in the pulmonary diagnosis of post-COVID-19 syndrome

The low flow rate, low dose DECT enhances patient safety and accurately identifies functional lung abnormalities not easily detected by conventional CT or CTPA. When combined with clinical data such as mMRC scores and D-dimer levels, it significantly improves diagnostic accuracy for post-COVID-19 syndrome. This approach provides an objective basis for clinical diagnosis and can help guide appropriate treatment planning.