Digital densitometric determination of clinical relative coronary flow distributions

G.A. ten Brinke, Cornelis H. Slump, C.J. Storm

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    2 Citations (Scopus)
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    X-ray coronary angiography is widely used to determine the presence of a stenosis. This paper discusses an approach towards the detection of the functional severity of a stenosis using the relative velocity of the contrast agent. The velocity of the contrast is measured using the arrival time at several locations on a coronary artery. This is done by placing multiple Regions Of Interest(ROI) equally spaced on the artery. The location of these ROIs varies in time because of the cardiac motion. Therefore, an artery tracing and tracking algorithm is used to estimate the location of the ROIs in time. The arrival time of the contrast can be estimated by measuring the image intensity in these ROIs. Using the arrival times in several ROIs, a qualitative velocity can be estimated. Altering the velocity of the blood pharmacologically, by inducing hyperemic conditions, results in a qualitative change in velocity detected by the algorithm. No change in velocity may indicate a severe flow limiting stenosis.
    Original languageUndefined
    Title of host publicationMedical Imaging 2006: Physiology, Function, and Structure from Medical Images
    Place of PublicationUSA
    Number of pages10
    ISBN (Print)9780819461865
    Publication statusPublished - 11 Feb 2006
    EventMedical Imaging 2006: Ultrasonic Imaging and Signal Processing - San Diego, USA, San Diego, United States
    Duration: 12 Feb 200616 Feb 2006

    Publication series

    NameProceedings of SPIE


    ConferenceMedical Imaging 2006: Ultrasonic Imaging and Signal Processing
    Country/TerritoryUnited States
    CitySan Diego
    Other11-16 Feb 2006


    • EWI-8930
    • METIS-232095
    • IR-63887

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