Method for segmenting features in an image

Details Method for segmenting features in an image Method for segmenting features in an image

1993-03-02

1994-11-08

Cohen, Lee S.

Surgery

Truss

Pad

36441313, 36441314, 36441316, 36441319, 1286531, 382 9, 382 18, A61B 5055

Patent

active

053617630

ABSTRACT:
A dual echo magnetic resonance imaging system produces two registered images of a patient in which the images have different contrast relationships between different tissue types. A two dimensional feature space histogram of the two images is produced and a separate centroid is located in the feature space histogram for each one of a pair of tissue types. A Cartesian coordinate system is defined in the feature space so that one axis of the system passes through the two centroids. Vector decomposition is employed to project each image element data point in the feature space onto a point on the one axis. The fractional quantity of each tissue type present in the image element is determined based upon the Euclidean distances from that axis point to the respective centroids. The fractional quantity is calculated for each element in the original images to form a pair of tissue images. The elements of a tissue image are processed to measure the amount of that tissue type in the imaged portion of the patient.

REFERENCES:
patent: 4665367 (1987-05-01), Kramer et al.
patent: 4856528 (1989-08-01), Yang et al.
patent: 4908578 (1990-03-01), Van Liere
patent: 4922915 (1990-05-01), Arnold et al.
patent: 5072384 (1991-12-01), Doi et al.
patent: 5107838 (1992-04-01), Yamaguchi
patent: 5185809 (1993-02-01), Kennedy et al.
patent: 5262945 (1993-11-01), DeCarli et al.
Paper by Joe P. Windham et al. entitled "Eigenimage Filtering in MR Imaging, Journal of Computer Assisted Tomography," Jan./Feb. 1988.
Neuroradiology, "Alzheimer Disease: Measuring Loss of Cerebral Gray Matter With MR Imaging," by Henry Rusinek et al., vol. 178, No. 1, Jan. 1991, pp. 109-114.
Journal of Computer Assisted Tomography, "Graphical Analysis of MR Feature Space For Measurement of CSF, Gray-Matter, and White-Matter Volumes", vol. 17, No. 3, May/Jun. 1993, pp. 461-470.

Affiliated with

Also associated with

Rating

Method for segmenting features in an image does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for segmenting features in an image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for segmenting features in an image will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1774699