Erdogan Tulin Cesmeli

US Patent:

6434215, Aug 13, 2002

Filed:

Jun 28, 2001

Appl. No.:

09/681943

Inventors:

Erdogan Cesmeli - Clifton Park NY

Assignee:

General Electric Company - Niskayuna NY

International Classification:

A61B 600

US Classification:

378 8, 378 4, 378 20

Abstract:

A method for reconstructing an image of a beating heart in vivo is described. The method includes acquiring projection data for at least one z-location within a projection space, determining peaks in first order spatial moments for the projection space using the projection data, and reconstructing the image utilizing peaks in the first order spatial moments.

US Patent:

6438196, Aug 20, 2002

Filed:

Jun 28, 2001

Appl. No.:

09/681942

Inventors:

Erdogan Cesmeli - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B 600

US Classification:

378 8, 378 4, 378 20

Abstract:

A method for reconstructing an image of a beating heart includes decomposing at least one electrocardiogram (EKG) RR interval, tagging projection data with cardiac phase information based on the decomposition, and reconstructing an image using the tagged data.

US Patent:

6522712, Feb 18, 2003

Filed:

Sep 7, 2000

Appl. No.:

09/656977

Inventors:

Mehmet Yavuz - Irving TX
Erdogan Cesmeli - Clifton Park NY

Assignee:

General Electric Company - Niskayuna NY

International Classification:

A61B 603

US Classification:

378 4, 378 8

Abstract:

An approach to image reconstruction provides enhanced image quality from limited projection data, particularly when the imaging object (or a portion of interest) is in motion during the tomographic projection data collection process. An interpolated projection view is generated from existing projection views between which an additional relationship exists by virtue of being respectively based on data collected in different data acquisition cycles. The present invention provides a technique for combining the existing projection views into an interpolated projection view by interpolation in time. A further aspect of the invention provides an approach for selecting a reconstruction range for projection data representing the imaged object and covering a plurality of projection ranges.

US Patent:

6718004, Apr 6, 2004

Filed:

Jun 6, 2002

Appl. No.:

10/064068

Inventors:

Erdogan Cesmeli - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01N 2300

US Classification:

378 8, 378 62

Abstract:

A method for imaging a desired coronary artery or desired portion thereof is provided. The method includes reconstructing a first 2D image of a first desired coronary artery branch segment utilizing a first projection dataset acquired during a first desired cardiac phase of a plurality of cardiac cycles to reduce motion artifacts of the first desired coronary artery branch segment, reconstructing a second 2D image of a second desired coronary artery branch segment utilizing a second projection dataset acquired during a second desired cardiac phase of the plurality of cardiac cycles to reduce motion artifacts of the second desired coronary artery branch segment, and reconstructing at least one 3D image of the coronary artery utilizing the first 2D image and the second 2D image.

US Patent:

6765983, Jul 20, 2004

Filed:

Dec 13, 2002

Appl. No.:

10/318909

Inventors:

Weizhong Yan - Clifton Park NY
Peter Michael Edic - Albany NY
Maria Iatrou - Clifton Park NY
Kai Frank Goebel - Balston Lake NY
Erdogan Cesmeli - Clifton Park NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B 603

US Classification:

378 8, 378901

Abstract:

A technique is provided for reducing motion-related artifacts present in CT images attributable to the dynamic nature of the imaged tissue or the time-varying concentration of a contrast agent. A region of interest that encompasses a structure of diagnostic significance is selected. For projections acquired by the various rows of detectors in a multi-slice CT imaging system, the portions of the projections attributable to the projection of the region of interest are averaged for each view angle. The projections containing these averaged values are then combined with the projections which do not encompass the region of interest. The combined projection set may be reconstructed to form a CT image of the dynamic tissue. In addition, a smoothing step may be performed to interpolate projection values around the region of interest to smooth the visual transition to the unaveraged portions of the image.

US Patent:

6879656, Apr 12, 2005

Filed:

Jul 22, 2003

Appl. No.:

10/624342

Inventors:

Erdogan Cesmeli - Brookfield WI, US
Peter Michael Edic - Albany NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B006/00

US Classification:

378 4, 378901, 378 19

Abstract:

One or more techniques are provided for deriving motion data from a set of CT projection data. The techniques calculate moments associated with consistency conditions for the projection data to derive motion data from the projection data. One aspect of the present techniques uses the calculated moments to select projection data sets based upon the presence or absence of motion between the projection data sets. Periodicity information may then be extracted from the selected projection data sets. Another aspect of the present techniques uses projection data acquired by a slowly rotating volumetric CT gantry to allow the separation of a corruptive signal from a desired motion signal. Once separated, the desired motion signal may be used to identify projection data at a desired phase of motion.

US Patent:

6956926, Oct 18, 2005

Filed:

Dec 31, 2002

Appl. No.:

10/335826

Inventors:

Erdogan Cesmeli - Clifton Park NY, US
Peter Michael Edic - Albany NY, US
Maria Iatrou - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

A61B006/00

US Classification:

378 8, 378 4

Abstract:

A technique is provided for improving consistency between slabs in a reconstructed CT image. Candidate sectors associated with an image slab are determined. If the sectors contain sufficient information to reconstruct the image slab, the sector which minimizes inconsistency with projection data for adjacent image slabs is selected for reconstruction. If the sectors do not contain sufficient information to reconstruct the slab, sectors are merged together until a merge group contains sufficient information. The merge group which minimizes inconsistency with projection data for adjacent image slabs is selected for image reconstruction. The selected sectors or merge groups are then reconstructed with the resulting image slabs comprising a reconstructed image with improved consistency between image slabs.

US Patent:

7221728, May 22, 2007

Filed:

Jul 23, 2003

Appl. No.:

10/625361

Inventors:

Peter Michael Edic - Albany NY, US
Maria Iatrou - Clifton Park NY, US
Erdogan Cesmeli - Brookfield WI, US
Bruno De Man - Clifton Park NY, US
Samit Basu - Niskayuna NY, US

Assignee:

General Electric Company - Niskayuna NY

International Classification:

G01N 23/04

US Classification:

378 8, 378 4

Abstract:

One or more techniques are provided for adapting a reconstruction process to account for the motion of an imaged object or organ, such as the heart. In particular, projection data of the moving object or organ is acquired using a slowly rotating CT gantry. Motion data may be determined from the projection data or from images reconstructed from the projection data. The motion data may be used to reconstruct motion-corrected images from the projection data. The motion-corrected images may be associated to form motion-corrected volume renderings.