The Vasolab® 320 is a modular designed system for the non-invasive vascular diagnosis. Using this device, the measurement results of 2 extremities can be taken at the same time. The examination processes as well as the analysis of measurement results and evaluations of examinations are efficiently supported by the examination programs which can be adjusted freely to examiners' needs. To continue, the Vasolab® 320 has 3 main functions, first is the Arterial function diagnosis, which is for Acral Pulse Oscillography (O-PO), Acral Blood Pressure Measurement (O-AP), Reactive Hyperemia (SG-AR) and the Segmental Pulse Oscillography (P-SPO). Second, the Venous function diagnosis which scopes Digital Photoplethysmography (D-PPG / LRR), Phlebodynamometry (PDM), Vein Occlusion Plethysmography (SG-VOP, O-VOP) and Filtration test. And lastly, the Bidirectional Doppler features the Peripheral and extracranial (CW), Transcranial (TCD), Automatic examination programs to calculate Ankle- Brachial-Index (ABI) and Toe-Brachial-Index (TBI) with automatic cuff control.