New Advanced Vascular Imaging Ultrasound Protocols

This is a single-center observational study aimed at setting up and testing new ultrasound vascular imaging protocols, conducted exclusively for research purposes. The study will perform US examinations in 60 subjects. The subjects enrolled in the study will be examined the first time and will then provide consent to be examined again in the future if needed. The primary aim of this study is to set-up and test new advanced US protocol for the arm and cerebral blood vessels The secondary objectives will be: * Define ranges of normality/reference values of US-based parameters to be compared with pathological values. * Evaluate the repeatability and reproducibility of the acquired US measurements. * Evaluate the correlation between age and the acquired US measurements. * Evaluate the correlation between gender and the acquired US measurements.