Dual- Energy CT (DECT) Pulmonary Angiography in Acute Pulmonary Thromboembolism (PTE): Causes, Semiology and Potential Diagnostic Pitfalls
نویسنده
چکیده
Citation: Gálvez García S, Muñoz Ruíz AL, Nava Tomás E, Chung H, Prieto Fernández A (2016) DualEnergy CT (DECT) Pulmonary Angiography in Acute Pulmonary Thromboembolism (PTE): Causes, Semiology and Potential Diagnostic Pitfalls. J Adv Radiol Med Image 1(2): 204. doi: 10.15744/24565504.1.204 Volume 1 | Issue 2 Journal of Advances in Radiology and Medical Imaging Learning Objectives The dual-energy computed tomographic (DECT) technique allows the differentiation of materials with large atomic numbers such as iodine. The basic principle of dual-energy CT is material decomposition based on attenuation differences at different energy levels. The parameters for iodine extraction are a minimum value of – 960 HU, and a maximum of –600 HU. Lung parenchyma with normal perfusion in this attenuation range is presented in orange, and an area of decreased perfusion is visualized as an iodine defect area.
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