Steven A Ross

US Patent:

7031434, Apr 18, 2006

Filed:

Aug 6, 2003

Appl. No.:

10/604634

Inventors:

Rowland Saunders - Hartland WI, US
Steven Ross - Waukesha WI, US
Thomas Toth - Brookfield WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G21K 5/04

US Classification:

378150, 378147

Abstract:

A method of manufacturing a collimator mandrel having variable attenuation characteristics is presented. The manufacturing process includes the placement of a layer of attenuating material on a core of base material. The layer of attenuating material is relatively thin and varies in thickness circumferentially around the core. The collimator mandrel may be manufactured by placing a cast about a core of non-attenuating material, filling a void between the cast and the core with an attenuating material, allowing the material to cure, and removing the cast from the assembly.

US Patent:

7173248, Feb 6, 2007

Filed:

Oct 20, 2004

Appl. No.:

10/969716

Inventors:

Steven Gerard Ross - Waukesha WI, US
Charles William Stearns - New Berlin WI, US
Ravindra Mohan Manjeshwar - Guilderland NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01T 1/164

US Classification:

25036303, 25037009, 382131

Abstract:

Methods and systems for image overlap correction are provided. The method includes acquiring the emission projection data from a plurality of scan frames that extend across at least a portion of a length of an object being imaged wherein elements of the object lie between a region of overlap between two successive frames. The method further includes iteratively reconstructing a 3D image volume from multi-frame emission projection data by updating an estimate of 3D image volume using emission projection data from the plurality of frames within an iterative reconstruction loop.

US Patent:

7254215, Aug 7, 2007

Filed:

Oct 28, 2003

Appl. No.:

10/695211

Inventors:

Steven Gerard Ross - Waukesha WI, US
Thomas Louis Toth - Brookfield WI, US
Willi Walter Hampel - Hartland WI, US
Bruce Matthew Dunham - Mequon WI, US

Assignee:

GE Medical Systems Global Technology Company, LLC - Waukesha WI

International Classification:

G21K 1/04

US Classification:

378150, 378 16, 378147, 378152

Abstract:

An imaging system including is described. The imaging system includes a radiation source configured to generate a beam, a collimator configured to collimate the beam to generate a collimated beam, and a detector configured to detect the collimated beam. The collimator is one of a first collimator with a curved contour proportional to a contour of the detector, a second collimator with blades, where slopes of two oppositely-facing surfaces of at least one of the blades are different from each other, and a third collimator having at least two sets of plates, where the plates in a set pivot with respect to each other.

US Patent:

7266180, Sep 4, 2007

Filed:

Feb 10, 2006

Appl. No.:

11/276034

Inventors:

Rowland Saunders - Hartland WI, US
Steven Ross - Waukesha WI, US
Thomas L. Toth - Brookfield WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G21K 1/02

US Classification:

378150, 378147

Abstract:

A method of manufacturing a collimator mandrel having variable attenuation characteristics is presented. The manufacturing process includes the placement of a layer of attenuating material on a core of base material. The layer of attenuating material is relatively thin and varies in thickness circumferentially around the core. The collimator mandrel may be manufactured by placing a cast about a core of non-attenuating material, filling a void between the cast and the core with an attenuating material, allowing the material to cure, and removing the cast from the assembly.

US Patent:

7436933, Oct 14, 2008

Filed:

Aug 9, 2007

Appl. No.:

11/836337

Inventors:

Rowland Saunders - Hartland WI, US
Steven G. Ross - Waukesha WI, US
Thomas L. Toth - Brookfield WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G21K 1/02

US Classification:

378150, 378147

Abstract:

A method of manufacturing a collimator mandrel having variable attenuation characteristics is presented. The manufacturing process includes the placement of a layer of attenuating material on a core of base material. The layer of attenuating material is relatively thin and varies in thickness circumferentially around the core. The collimator mandrel may be manufactured by placing a cast about a core of non-attenuating material, filling a void between the cast and the core with an attenuating material, allowing the material to cure, and removing the cast from the assembly.

US Patent:

7847552, Dec 7, 2010

Filed:

Jan 10, 2007

Appl. No.:

11/621622

Inventors:

Robert H. Haworth - Brookfield WI, US
Steven G. Ross - Waukesha WI, US
Charles W. Stearns - New Berlin WI, US
Jason A. Polzin - Lake Mills WI, US
Alexander Ganin - Whitefish Bay WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324318, 324322

Abstract:

A system and method for simultaneously acquiring PET and MR data from a subject of interest with a hybrid PET-MR scanner includes monitoring transmission times of RF and gradient coils of the MR equipment and blanking segments of the PET data stream accordingly. By excluding PET data acquired during active MR transmissions, the remaining PET data used for image reconstruction will provide improved PET image quality.

US Patent:

8415630, Apr 9, 2013

Filed:

Dec 21, 2009

Appl. No.:

12/643735

Inventors:

Steven Gerard Ross - Pewaukee WI, US
Timothy Wayne Deller - Pewaukee WI, US
Ravindra Mohan Manjeshwar - Glenville NY, US
Scott David Wollenweber - Waukesha WI, US
Charles William Stearns - Milwaukee WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01T 1/161
G01T 1/166
A61B 6/00

US Classification:

25036302, 25036304, 378 7

Abstract:

Apparatus and methods for determining a boundary of an object for positron emission tomography (PET) scatter correction are provided. One method includes obtaining positron emission tomography (PET) data and computed tomography (CT) data for an object. The PET data and CT data is acquired from an imaging system. The method further includes determining a PET data boundary of the object based on the PET data and determining a CT data boundary of the object based on the CT data. The method further includes determining a combined boundary for PET scatter correction. The combined boundary encompasses the PET data boundary and the CT data boundary.

US Patent:

8452064, May 28, 2013

Filed:

Dec 7, 2009

Appl. No.:

12/632393

Inventors:

Steven Gerard Ross - Pewaukee WI, US
Timothy Deller - Pewauke WI, US
Charles William Stearns - Milwaukee WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G06K 9/36

US Classification:

382131

Abstract:

Apparatus and methods for geometric calibration of positron emission tomography (PET) systems are provided. One method includes obtaining scan data for a uniform phantom and generating reference images based on the scan data for the uniform phantom. The method further includes reconstructing images of the uniform phantom using a PET imaging system and determining a geometric calibration for the PET imaging system based on a comparison of the reconstructed images and the reference images.