Dual energy CT with material-specific reconstructions including iodine, pulmonary blood volume, and lung vessel images can improve assessment of vascular and associated parenchymal abnormalities. An understanding of material-specific reconstruction algorithms, clinical applications and potential pitfalls can help in accurate interpretation of dual energy CT examinations. Purpose of this exhibit is to review: Basic principles of dual energy CT material-specific reconstructions ● Iodine maps ● Pulmonary blood volume (PBV) images ● Lung vessel images Specific applications and benefits of material-specific reconstructions in cardiothoracic imaging ● Pulmonary embolism: Vessel and PBV images can improve detection of embolus and infarction ● Congenital cyanotic heart disease: Material-specific reconstructions can have a role in assessing pulmonary artery flow/lung perfusion and adequacy of reconstruction surgery ● Arteriovenous malformations: Material-specific images can increase conspicuity of small malformations and can be used to evaluate the success of embolization ● Pulmonary hypertension: Material-specific images are useful to detect subtle decreases in parenchymal perfusion and pulmonary blood flow ● Airway diseases: Reconstructions can provide information on the downhill effect of bronchial obstruction. Potential pitfalls and artifacts in interpreting material specific reconstructions ● Beam-hardening artifacts ● Diaphragmatic motion ● Cardiac motion Radiation Dose: Similar or less than single-energy CT Read More

Meeting name: SPR 2024 Annual Meeting & Postgraduate Course , 2024

Authors: Haq Adeel, Siegel Marilyn, Awali Mohamed

Keywords: Dual Energy CT, Iodine mapping, Pulmonary Blood Volume