Chronic thromboembolic hypertension (CTEPH; group 4 according to WHO) is a form of pulmonary hypertension (PH) in which the vessels undergo chronic changes due to previous pulmonary embolisms, resulting in impaired blood flow in the lungs.
Chronic thromboembolic hypertension is usually diagnosed by means of pulmonary scintigraphy and computed tomographic pulmonary angiography. The dual-energy method makes it possible to visualize perfusion failures in relation to their anatomical localization.
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Akute Lungenembolie mit grossen Thromben (links) und chronsiche Lungenembolie mit Brands (rechts). -
Perfusionsszinzigraphie (links) und Dual-Energy CT (rechts) desselben Patienten mit peripheren Perfusionsausfällen bei chronischer Lungenembolie. -
Perfusions-MR der Lunge.