摘要:
The invention relates to an image processing method of extracting geometrical data of the spine, for extracting the left and right pedicle landmarks of each spine vertebra, comprising steps of: acquiring image data of a 2-D frontal image of the spine; associating spine States to vertebra positions along the spine and estimating locations of left and right pedicle landmark Candidates in each State; defining a State Cost for forming Couples of left and right pedicle landmark Candidates (PL and PR); estimating sets of Best Couple Candidates, in each State, from the lowest State Costs; defining a Path Cost to go from one State to the next State; selecting a pedicle landmark Couple in each spine State (V) among the Best Couple Candidates from the minimum Path Costs, and localizing the left and right pedicle landmarks of each spine vertebra from said selected pedicle landmark Couple. The invention also relates to a system, a medical apparatus and a program product for carrying out the method.Application: Medical Imaging x-ray Medical System and apparatus; Program Product for Medical Imaging.
摘要:
A method for extracting geometrical data from a 2-D digital image of the spine, comprising steps for determining spine outlines, endplates and corners wherein: digitizing the spine center line and end points; constructing a 2-D image band, referred to as Rubber-Band, whose center line is a spline representing the spine center line, and unfolding said Rubber-Band for constructing a 2-D Rectangular-Band; processing the 2-D Rectangular-Band image data in order to estimate best paths going through selected points for determining the spine outlines, then the endplates based on the found outline data and the corners at the intersection of the outlines and endplates.
摘要:
An image processing method for providing three-dimensional geometric modeling of the spine, using a biplanar image reconstruction, comprising steps of acquisition of a first view (F) of a part of the spine, and a second view (L) of the same part of the spine taken from a different angle around the longitudinal axis of the spine, matching the dimensions of the views (F,L) from two predetermined corresponding landmarks (P1, P2) on each view and deriving three-dimensional coordinates (z, x, y) of corresponding points (P) along the spine. Application: X-ray medical 3-D imaging.
摘要:
An ultrasound imaging system and method includes acquiring data including a first plane and a second plane. The system and method includes adjusting a first orientation of the first plane and automatically adjusting a second orientation of the second plane in order to maintain a fixed relationship between the second plane and the first plane.
摘要:
An ultrasound imaging system and method include acquiring ultrasound data of an anatomical structure, generating a live image based on the ultrasound data, and displaying the live image. The system and method include displaying a target image of the anatomical structure. The system and method include comparing the live image to the target image.
摘要:
The invention relates to an ultrasound images acquisition system. First, a first sequence of ultrasound images (I1) of an organ (LV) is acquired at a first image rate (IR1). Then a second sequence of ultrasound three-dimensional images (I3D—1) of a sub-volume (S_V1) covering a part of interest (RI/VI) in the first sequence (I1) is acquired at a second image rate (IR2) and a third sequence of ultrasound three-dimensional images (I3D—2) of a reference sub-volume (S_V0) is acquired at the second image rate (IR2). Finally the second and third sequences of three-dimensional images sequences (I3D—1, I3D—2) are compared.
摘要:
Image processing method for displaying an image sequence of a deformable 3-D object with indications of the object wall motions comprising steps of acquiring image data of an image sequence, segmenting the 3-D object in the images of the sequence for locating the wall of the 3-D object, and coloring voxels or parts of the wall in function of their displacement with respect to the wall of the 3-D object in one image of the sequence chosen as a reference. Color images of the 3-D object with color coded voxels or parts of the wall are displayed in a sequence for the user to estimate the object wall motion. This method is used in medical examination apparatus for studying ultrasound images of organs whose walls have motion.
摘要:
The present invention relates to a system for guiding a medical instrument in a patient body. Such a system comprises means for acquiring a 2D X-ray image of said medical instrument, means for acquiring a 3D ultrasound data set of said medical instrument using an ultrasound probe, means for localizing said ultrasound probe in a referential of said X-ray acquisition means, means for selecting a region of interest around said medical instrument within the 3D ultrasound data set and means for generating a bimodal representation of said medical instrument detection by combining said 2D X-ray image and said 3D ultrasound data set. A bimodal representation is generated on the basis of the 2D X-ray image by replacing the X-ray intensity value of points belonging to said region of interest by the ultrasound intensity value of the corresponding point in the 3D ultrasound data set.
摘要:
An ultrasound imaging system and method include acquiring first ultrasound data, the first ultrasound data comprising data of a first plane through a structure of interest. The ultrasound imaging system and method include tracking the motion of a landmark based on the first ultrasound data. The ultrasound imaging system and method acquiring second ultrasound data, the second ultrasound data including data of a second plane through the structure of interest, the second plane being distinct from the first plane, where the position of the second plane is adjusted to track the motion of the landmark. The ultrasound imaging system and method also includes generating an image based on the second ultrasound data.
摘要:
The present invention relates to an ultrasonic imaging system for evaluating and displaying a deformation of a body organ. A sequence of image data sets comprising at least a first image data set and a second image data set of echographic data is acquired. A motion vector field is calculated between image points of the second image data set and image points of the first image data set. A reference point is chosen within or outside the first and second image data sets. A first scanline is defined, which comprises said reference point. A motion vector of an image point is projected onto the defined first scanline, which provides a projected tissue velocity along the first scanline. The projected tissue velocity is used for evaluating a ID component of a deformation of the body organ at the image point along the direction of the first scanline. Such a ID component of a deformation of the body organ, for example a strain rate or a strain, is further rendered in a graphical representation of the sequence of image data sets.