Dual-energy CT(DECT)collects qualitative and quantitative data based on the difference in material attenuation characteristics under different energies using two types of energy and two sets of detectors.DECT provides the benefits of easy access and high resolution.Disease information can be obtained from morphology and function using post-processing techniques.DECT has shown superiority in the diagnosis and treatment of pulmonary vascular diseases such as pulmonary embolism,chronic thromboembolic pulmonary hypertension,pulmonary arterial hypertension,and pulmonary venous occlusive disease/pulmonary capillary hemangiomatosis.This article reviews the technical principles of DECT and its application progress in pulmonary vascular diseases.
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