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    Noise estimation in cardiac x-ray imaging: a machine vision approach

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    Gislason-Lee_BiomedPhysEngExpress_(2016).pdf (894.9Kb)
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    Publication date
    2016-12-16
    Author
    Kengyelics, S.M.
    Gislason-Lee, Amber J.
    Keeble, C.
    Magee, D.R.
    Davies, A.G.
    Keyword
    X-ray
    Noise
    Machine vision
    Cardiac
    Imaging
    Radiology
    Rights
    This is an author-created, un-copyedited version of an article accepted for publication/published in Biomedical Physics & Engineering Express. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.1088/2057-1976/2/6/065014.
    Peer-Reviewed
    Yes
    
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    Abstract
    We propose a method to automatically parameterize noise in cardiac x-ray image sequences. The aim was to provide context-sensitive imaging information for use in regulating dose control feedback systems that relates to the experience of human observers. The algorithm locates and measures noise contained in areas of approximately equal signal level. A single noise metric is derived from the dominant noise components based on their magnitude and spatial location in relation to clinically relevant structures. The output of the algorithm was compared to noise and clinical acceptability ratings from 28 observers viewing 40 different cardiac x-ray imaging sequences. Results show good agreement and that the algorithm has the potential to augment existing control strategies to deliver x-ray dose to the patient on an individual basis.
    URI
    http://hdl.handle.net/10454/16954
    Version
    Accepted manuscript
    Citation
    Kengyelics SM, Gislason-Lee AJ, Keeble C et al (2016) Noise estimation in cardiac x-ray imaging: a machine vision approach. Biomedical Physics & Engineering Express. 2(6): 065014.
    Link to publisher’s version
    https://doi.org/10.1088/2057-1976/2/6/065014
    Type
    Article
    Collections
    Health Studies Publications

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