Image analysis – Applications – Biomedical applications
Reexamination Certificate
2011-01-04
2011-01-04
Tabatabai, Abolfazl (Department: 2624)
Image analysis
Applications
Biomedical applications
C600S481000
Reexamination Certificate
active
07865003
ABSTRACT:
2-D projection images show the temporal profile of the distribution of a contrast medium in an examination object, which contains a vascular system and its surroundings. Each projection image comprises pixels with pixel values. The pixel values of pixels corresponding to one another in the projection images are defined by at least essentially locationally identical areas of the examination object. A computer assigns a uniform 2-D evaluation core that is uniform for all corresponding pixels at least in a sub-area of pixels corresponding to one another in the projection images that is uniform for the projection images. The computer defines at least one characteristic value for each pixel within each projection image based on the evaluation core assigned to the pixel and assigns it to the relevant pixel. Based on the temporal profile of the characteristic values, the computer defines parameters of at least one function of time, so that any deviation between the function parameterized with the parameters and the temporal profile of the characteristic values is minimized. Based on the parameters the computer defines a type and/or an extent and assigns them to a pixel of a 2-D evaluation image corresponding to the pixels of the projection images. The type indicates whether the respective pixel of the evaluation image corresponds to a vessel of the vascular system, a perfused part or a non-perfused part of the surroundings of a vessel of the vascular system. The extent is characteristic of perfusion. The computer outputs at least the sub-area of the evaluation image to a user via a display device.
REFERENCES:
patent: 6854884 (2005-02-01), Kerrien et al.
patent: 7336760 (2008-02-01), Virshup et al.
patent: 2003/0114759 (2003-06-01), Skyba et al.
patent: 2007/0041625 (2007-02-01), Camus et al.
patent: 100 00 185 (2001-07-01), None
patent: 101 00 572 (2002-07-01), None
patent: 101 07 765 (2002-08-01), None
patent: 10 2005 036 875 (2006-05-01), None
patent: 10 2005 039 189 (2007-02-01), None
patent: 1 302 163 (2003-04-01), None
patent: 1 585 058 (2005-10-01), None
patent: WO 97/17673 (1997-05-01), None
Thomas Wittenberg, Peter Hastreiter, Ulrich Hoppe, Heinz Handels, Alexander Horsch, Hans-Peter Meinzer; “Bildverarbeitung für die Medizin 2003—Algorithmen—Systeme—Anwendungen”; Proceedings des Workshops, Mar. 9-11, 2003; pp. 80-85; Springer; Erlangen, Germany.
Malsch et al., Quantitative Analyse von koronarangiographischen Bildfolgen zur Bestimmung der Myokardperfusion in Bildverarbeitung für die Medizin 2003-Algorithmen—Systeme—Anwendungen, Springer-Verlag, ISBN 3-540-00619, pp. 81-85.
Camus Estelle
Redel Thomas
Siemens Aktiengesellschaft
Tabatabai Abolfazl
LandOfFree
Image evaluation method for two-dimensional projection... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Image evaluation method for two-dimensional projection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image evaluation method for two-dimensional projection... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2727737