EDWARD ANTHONY GEISER
Medical Practice in Gainesville, FL

4771470, Sep 13, 1988

Nov 14, 1985

6/797897

Edward A. Geiser - Gainesville FL
Leslie H. Oliver - Wolfville, CA
Bruce D. Franklin - Hansville WA

University of Florida - Gainesville FL

G06K 940

382 27

Ultrasonic images are enhanced by applying to the images asymmetric balanced gradient operators or masks which are formed to produce values which are maximized at the edges of spots having a predetermined size and location relative to the mask, which spots have a high likelihood of being specular targets. The gradient operators are further formed to produce minimum values for smaller spots corresponding to acoustic speckle. In the resultant image, the edges of specular targets are enhanced and acoustic speckle is substantially eliminated. Ultrasonic images may be processed in real time with the gradient operators in either an image processing computer or in a hardware pipeline processor.

6716175, Apr 6, 2004

Jan 11, 2002

10/042303

Edward A. Geiser - Gainesville FL
David C. Wilson - Gainesville FL

University of Florida - Gainesville FL

A61B 800

600450

The invention comprises a method and apparatus for generating a synthetic echocardiographic image. The method comprises first obtaining, for a plurality of pathologically similar reference hearts, a reference echocardiographic image of each reference heart at end-systole and at end-diastole. Next, the coupled epicardial and endocardial borders are identified in each echocardiographic image. An epicardial/endocardial border pair is then modeled from the identified borders. The method then locates a plurality of predetermined features in the reference echocardiographic images. The predetermined features are then located in the subject echocardiographic image from the location of the predetermined features in the reference echocardiographic images. The modeled epicardial/endocardial border pair is then mapped onto the subject echocardiographic image relative to the location of the predetermined features in the subject echocardiographic image. The apparatus generally comprises an echocardiographic machine for obtaining the echocardiographic images that are then processed by a computing system.

6708055, Mar 16, 2004

May 6, 2002

10/138526

Edward A. Geiser - Gainesville FL
David C. Wilson - Gainesville FL

University of Florida - Gainesville FL

A61B 505

600425

A method for quantitatively analyzing digital images of approximately elliptical body organs, and in particular, echocardiographic images is provided. In particular, methods are disclosed for obtaining short-axis apical four-chamber views of a heart, and particularly for obtaining high-quality automated images of particular regions of the heart muscle, as viewed along its long axis.

6346124, Feb 12, 2002

Jun 9, 2000

09/590799

Edward A. Geiser - Gainesville FL
David C. Wilson - Gainesville FL

University of Florida - Gainesville FL

A61B 800

660450

A method for generating a synthesis echocardiographic image comprises first obtaining, for a plurality of pathologically similar reference hearts, a reference echocardiographic image of each reference heart at end-systole and at end-diastole. Next, the coupled epicardial and endocardial borders are identified in each echocardiographic image. An epicardial/endocardial border pair is then modeled from the identified borders. The method then locates a plurality of predetermined features in the reference echocardiographic images. The predetermined features are then located in the subject echocardiographic image from the location of the predetermined features in the reference echocardiographic images. The modeled epicardial/endocardial border pair is then mapped onto the subject echocardiographic image relative to the location of the predetermined features in the subject echocardiographic image. The apparatus generally comprises an echocardiographic machine for obtaining the echocardiographic images that are then processed by a computing system.

5797396, Aug 25, 1998

Dec 19, 1996

8/770912

Edward A. Geiser - Gainesville FL
David C. Wilson - Gainesville FL

University of Florida Research Foundation - Gainesville FL

A61B 500, A61B 800

1286531

A method for quantitatively analyzing digital images of approximately elliptical body organs, and in particular, echocardiographic images. In a first preferred embodiment, the invention automatically determines the center-point of an elliptical organ and a search region for border discrimination by finding the maximum value produced by a series of circular arc filters applied to the image data. In a second preferred embodiment, a pair of elliptical arc filters are used to make a first approximation of the positions of the right and left epicardium so that matched elliptical filters can be used to estimate the anterior epicardial position. The estimated position of the anterior epicardial, together with the posterior epicardial position, determines the center-point of the left ventricle. The positions of the organ borders are then approximated by generating amplitude distributions along each of a number of circular segments based on the center-point. The approximated borders are then compared on a best-fit basis to a set of paired elliptical arcs used to model the borders.

5360006, Nov 1, 1994

Dec 29, 1993

8/174763

Edward A. Geiser - Gainesville FL
David C. Wilson - Gainesville FL
Gordon L. Gibby - Gainesville FL

University of Florida Research Foundation, Inc. - Gainesville FL

A61B 500

1286531

A method is provided for automatically determining quantitative characteristics of organ images, especially echocardiographic images. A diagnostic image is obtained and then a center point for the approximately curvilinear bounded organ is determined by repeatedly filtering the image with a set of circular arc filters until a maximum value for the filter set is obtained, whereupon parameters of cardiac wall motion, wall thickness and area change fraction may be determined to detect ischemic or other organ abnormality.