Objectives: Pulmonary arterial hypertension (PAH) is a devastating lung vascular disease. Despite advances in the diagnosis of this condition. early detection and ascertainment of the genesis of pulmonary hypertension are still a difficult task. We supposed that the method of Single photon emission computed tomography - computed tomography (SPECT/CT) imaging facility is a good alterna... https://www.reesfrashers.shop/product-category/mask-and-snorkel/