Articles Related to PBV
Late Cerebellar Vermis Metastasis of Breast Cancer Presenting as Pseudo-Benign Paroxysmal Positional Vertigo
Benign paroxysmal positional vertigo (BPPV) is a common peripheral vestibular disease; however intracranial lesions can mimic it. Intractable, not self-limiting paroxysmal positional vertigo sustained by intracranial tumors is called malignant paroxysmal positional vertigo (MPPV) while, when radiological imaging shows vascular cerebellar vermis lesions and there are atypical findings on the Dix-Hallpike maneuver, we speak about pseudo-benign paroxysmal type (pseudo-BPPV).
Dual- Energy CT (DECT) Pulmonary Angiography in Acute Pulmonary Thromboembolism (PTE): Causes, Semiology and Potential Diagnostic Pitfalls
ObjectivesThe 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.