Patent ID: 9585572
Date: 2017-03-07
CPC Classifications: A61B

Claim:
1. A system for determining fractional flow reserve of a fluid within a luminal organ, the system comprising: a) a device, comprising: b) the data acquisition and processing system, which is further configured to determine fractional flow reserve when the device is positioned within the luminal organ at or near a stenosis, wherein the fractional flow reserve is calculated by the data acquisition and processing system using a) a flow velocity obtained using the at least two sensors of the device, b) a mean aortic pressure within the luminal organ, and c) the at least one cross-sectional area within the luminal organ at or near the stenosis, wherein the at least one actual cross-sectional area is calculated by the data acquisition and processing system using the data obtained by the at least two sensors in the presence of undiluted boluses of at least one of the first fluid and/or the second fluid and the mean aortic pressure is calculated using the flow velocity and the at least one cross-sectional area.