Patent ID: 8641639

Claim:
A fluid injection system comprising: fluid tubing adapted to provide fluid communication between the injection system and a patient; a control panel; and a processor; wherein the processor is adapted to receive: (a) a first signal representative of a first blood pressure measured upstream of a location of interest in the patient during a phase of a cardiac cycle, the first signal being generated with a hemodynamic transducer or a sensor coupled to an intravascular sensor delivery device, and (b) a second signal representative of a second blood pressure measured downstream of the location of interest in the patient in substantially the same phase of the cardiac cycle as the first signal, the second signal being generated by the sensor, wherein the control panel is adapted to display information derived from the first and second signals, and wherein the intravascular sensor delivery device comprises a distal sleeve and a proximal portion, the distal sleeve having a guidewire lumen for sliding over and receiving a separate medical guidewire and being insertable in a leading direction into a body of the patient, the proximal portion having a main section extending proximally from the distal sleeve and a distal transition extending distally from the main section, wherein the distal transition is fixedly coupled to an outer surface of the distal sleeve, the proximal portion comprises a communication channel for communicating at least one of the first signal and second signal from the sensor to a location outside of the patient, and the proximal portion is adapted to facilitate positioning of the sensor within an anatomical structure of the patient.