System and method for detecting, localizing, and characterizing occlusions and aneurysms in a vessel

This invention relates to the field of medical interventional diagnostic devices. In particular, this invention provides a system and method for the detection, localization, and characterization of occlusions and aneurysms in blood or other body vessels and to the evaluation of clinical treatment success (e.g. tracking sufficient opening of the occlusion or malpositioning of a stent). Also, this invention provides a method and system for vessel wall characterization and diagnosis of the vascular bed. This invention relates to a method and devices for detection, localization and characterization of occlusions, aneurysms, wall characteristics and vascular bed. The invention is based on introducing an artificial pressure or flow excitation signal (a single signal or more) into the blood vessel (or in other tubular flowing fluid conduits), measurement and analysis of the pressure and or flow. The invention discloses a method and devices for detection and characterization of partial or total occlusion or aneurysm in blood vessels or in other tubular flowing fluid conduits within a body, such as urine flow in the urethra.