Patents by Inventor Pierre Gantet

Pierre Gantet has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7186984
    Abstract: The invention relates to a process of quantification of the radioactivity of living tissue structures by emission tomography to determine the concentration of a radioactive tracer. It includes the acquisition of images in three dimensions, the determination of the point dispersion function of the imaging system, its convolution with a high-resolution model to obtain a low resolution model, a readjustment, an appraisal of the match between the low-resolution model and the images, in case of a negative test, iterative steps of deformation of the high-resolution model and of performing the preceding steps until the test remains negative, the segmentation of the images into regions, the calculation of the activity of the regions, the determination of a geometrical transfer matrix, its inversion and the multiplication, so as to obtain data for correction of the partial volume effect.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: March 6, 2007
    Assignee: Segami
    Inventors: Maleaume Bonnin, Jean-Paul Esquerre, Pierre Gantet, Pierre Payoux
  • Publication number: 20060054827
    Abstract: The invention relates to a process of quantification of the radioactivity of living tissue structures by emission tomography to determine the concentration of a radioactive tracer. It includes the acquisition of images in three dimensions, the determination of the point dispersion function of the imaging system, its convolution with a high-resolution model to obtain a low resolution model, a readjustment, an appraisal of the match between the low-resolution model and the images, in case of a negative test, iterative steps of deformation of the high-resolution model and of performing the preceding steps until the test remains negative, the segmentation of the images into regions, the calculation of the activity of the regions, the determination of a geometrical transfer matrix, its inversion and the multiplication, so as to obtain data for correction of the partial volume effect.
    Type: Application
    Filed: April 5, 2005
    Publication date: March 16, 2006
    Inventors: Maleaume Bonnin, Jean-Paul Esquerre, Pierre Gantet, Pierre Payoux
  • Patent number: 5459320
    Abstract: A tomography machine with gamma ray detection has a collimator, the arrangements of holes of which are focused on a geometric slice of a patient's body, the slice having a thickness determined a priori, for the examination of the slice. Reconstructed tomographic images of this body are obtained swiftly and efficiently. By shifting the tomography machine longitudinally, images of adjacent slices are obtained. This technique makes it possible to work with greater speed than by acquiring comprehensive 2D image projections of the entire body to be studied.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: October 17, 1995
    Assignee: Universite Paul Sabatier
    Inventors: Bernard Danet, Pierre Gantet, Bernard Aragon, Robert Guiraud