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AssigneePie Medical Imaging B.V.
InventorsRon Schormans, Jean-Paul Aben, Dennis Koehn
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A method for quantitative flow analysis of a fluid flowing in a conduit from a sequence of consecutive image frames of such a conduit, where such image frames are timely separated by a certain time interval, the method comprising: a) selecting a start image frame and an end image frame from the sequence either automatically or upon user input; b) determining a centerline of the conduit in the start image frame; c) determining a centerline of the conduit in the end image frame; d) selecting a common start point on the centerline of the start image frame and on the centerline of the end image frame either automatically or upon user input; e) selecting an end point on the centerline of the start image frame; f) selecting an end point on the centerline of the end image frame; g) calculating centerline distance between the start point and the end point of the start image frame; h) calculating centerline distance between the start point and the end point of the end image frame; and i) calculating a local flow velocity as a function of the centerline distances of g) and h) and a time interval between the start image frame and the end image frame. A corresponding imaging device and computer program are also disclosed.
A computer-implemented method for quantitative flow analysis of blood flowing in a blood vessel from a sequence of two-dimensional image frames of such blood vessel covering one or more heart cycles, which such image frames are timely separated by a certain time interval, the method employing a processor having processor-executable instructions to perform operations comprising:
An imaging device for acquiring a contrast-enhanced sequence of two-dimensional image frames, the imaging device comprising an acquisition module for obtaining a plurality of two-dimensional image frames of a blood vessel perfused by a contrast agent, a timing module for driving the acquisition module to obtain the sequence of two-dimensional image frames after a trigger event, and a selection module for selecting a pair of two-dimensional image frames from the sequence of two-dimensional image frames, wherein the pair of two-dimensional image frames consists of a start image frame and an end image frame where contrast agent is present in the blood vessel, the device further comprising a processor programmed to:
Dependencies are inferred from the claim text.