×

fMRI signal processing

  • US 6,370,416 B1
  • Filed: 11/25/1998
  • Issued: 04/09/2002
  • Est. Priority Date: 11/25/1998
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for functional MRI (fMRI) signal analysis of an area of the brain comprising:

  • a) invoking neuronal activity in an area of the brain of a subject;

    b) acquiring sequential magnetic resonance images, at least during a portion of time in which said are of the brain of a subject is activated, of said area and of at least a portion of the brain in a vicinity of the area;

    c) constructing, responsive to at least one pixel-related parameter value of said images, a pixel parameter space; and

    d) applying non-linear filtering to said pixel parameter space, wherein said nonlinear filtering separates said pixel parameter space into at least two subspaces, comprising a signal subspace and a noise subspace, the method further comprising deriving a plurality of detection functions from image portions of a region of the brain in the vicinity of the area in said sequential images; and

    synchronously detecting temporal variations in said area, over a sequence of images, using synchronous detection.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×