Ersin Bayram

US Patent:

7595639, Sep 29, 2009

Filed:

Jan 15, 2008

Appl. No.:

12/014267

Inventors:

Ersin Bayram - Delafield WI, US
Charles R. Michelich - Waukesha WI, US
Anthony T. Vu - Waukesha WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324307, 324300

Abstract:

A magnetic resonance imaging (MRI) apparatus includes an MRI system having a plurality of gradient coils positioned about a bore of a magnet. An RF transceiver system and an RF switch are controlled by a pulse module to transmit and receive RF signals to and from an RF coil assembly to acquire MR images. The MRI apparatus also includes a computer programmed to calculate a cost for each point to be acquired in k-space, acquire MR data based on the calculated cost for each point, and generate an MR image using the acquired MR data.

US Patent:

7649354, Jan 19, 2010

Filed:

Sep 26, 2007

Appl. No.:

11/861916

Inventors:

Ersin Bayram - Delafield WI, US
Charles R. Michelich - Waukesha WI, US
Anthony T. Vu - Waukesha WI, US
Reed F. Busse - Madison WI, US

Assignee:

General Electric Co. - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324309, 324307

Abstract:

A multi-shot three-dimensional (3D) magnetic resonance imaging (MRI) data view-ordering strategy for uniform or variable density k-space sampling schemes is presented. The k-kplane is partitioned into multiple wedge-shaped “blades” (or radial fan beams). The angular size of individual blades may be adjusted according to the desired number of views for each blade. Each blade includes views near the origin that contain low-frequency information about the imaged object such that views having the most desirable characteristics may be used to fill the central portions of k-space.

US Patent:

8022700, Sep 20, 2011

Filed:

Nov 7, 2008

Appl. No.:

12/267067

Inventors:

Vijay Shivalingappa Nimbargi - Bangalore, IN
Ramesh Venkatesan - Bangalore, IN
Ersin Bayram - Delafield WI, US
Anthony Tienhuan Vu - Waukesha WI, US
Charles Robert Michelich - Waukesha WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324309

Abstract:

A method for acquiring magnetic resonance (MR) data for a three-dimensional (3D) dynamic study includes partitioning a k-kplane with a plurality of views into an inner region and a plurality of outer regions. The inner region includes a set of views in a central region of the k-kplane and each outer region includes a plurality of views outside of the central region of the k-kplane. The method also includes partitioning each outer region into a plurality of radial fan beam segments, defining a first view ordering for the inner region and defining a second view ordering for each outer region. Once the k-kplane is partitioned and the view orderings are defined, MR data is acquired for the set of views in the inner region and for all of the views in each of the outer regions in an alternating acquisition order where the set of views in the inner region are acquired more frequently than the views in each of the outer regions. At least one MR image is generated based on the acquired MR data.

US Patent:

8030920, Oct 4, 2011

Filed:

Jun 3, 2009

Appl. No.:

12/477709

Inventors:

Anthony Tienhuan Vu - Waukesha WI, US
Wei Sun - Waukesha WI, US
Ersin Bayram - Delafield WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324307, 324309

Abstract:

Methods and systems are provided for modifying a pulse sequence. In one embodiment, a determination is made whether an estimated peripheral nerve stimulation (PNS) associated with a pulse sequence exceeds a PNS limit. If the estimated PNS exceeds the PNS limit, a slew rate associated with one or more axes of the pulse sequence may be reduced and the maximum gradient amplitudes for each axis of the pulse sequence may be adjusted. In one embodiment, adjustment of the maximum gradient amplitudes or local slew rate may be based upon a cost analysis performed on the pulse sequence.

US Patent:

8120360, Feb 21, 2012

Filed:

Sep 28, 2009

Appl. No.:

12/568355

Inventors:

Manojkumar Saranathan - Rochester MN, US
Ersin Bayram - Delafield WI, US
Dan W. Rettmann - Rochester MN, US
Reed F. Busse - Madison WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324309, 324307

Abstract:

A method of magnetic resonance (MR) imaging includes segmenting a k-kplane comprising a plurality of encoding points into a plurality of annular segments. For each annular segment, a view ordering is defined based on a polar angle associated with each encoding point contained within the annular segment. MR data is acquired for the plurality of encoding points based on the view ordering for each annular segment and at least one MR image is generated using the acquired MR data.

US Patent:

20080068016, Mar 20, 2008

Filed:

Sep 15, 2006

Appl. No.:

11/532511

Inventors:

Ajeetkumar Gaddipati - Waukesha WI, US
Shaorong Chang - Waukesha WI, US
Ersin Bayram - Delafield WI, US
Michael R. Hartley - Novi MI, US

International Classification:

G01V 3/00

US Classification:

324318

Abstract:

A system and method of MR imaging enables PROPELLER imaging to be feasibly carried out independently of slice orientation or anatomy of interest. The invention is directed to accelerated acquisition of blades of MR data that are rotated about a central region of k-space and reconstructing an image of arbitrary slice orientation from the blades of MR data that preserves contrast and reduces acceleration artifacts caused by signal amplitude variances.

US Patent:

20220248972, Aug 11, 2022

Filed:

Feb 10, 2021

Appl. No.:

17/172644

Inventors:

- Wauwatosa WI, US
Daniel V. Litwiller - Denver CO, US
Arnaud Guidon - Boston MA, US
Ersin Bayram - Houston TX, US
Robert Marc Lebel - Calgary, CA
Tim Sprenger - Sundybyberg, SE

International Classification:

A61B 5/055
A61B 5/00
G01R 33/56
G01R 33/46
G01R 33/48

Abstract:

A method for producing an image of a subject with a magnetic resonance imaging (MRI) comprises acquiring a first set of partial k-space data from the subject and generating a phase corrected image based on a phase correction factor and the first set of the partial k-space data. The method further includes transforming the phase corrected image into a second set of partial k-space data and reconstructing the image of the subject from the second set of the partial k-space data and a weighting function.

US Patent:

20220237748, Jul 28, 2022

Filed:

Apr 12, 2022

Appl. No.:

17/718697

Inventors:

- Wauwatosa WI, US
Daniel Vance Litwiller - Denver CO, US
Sagar Mandava - Atlanta GA, US
Robert Marc Lebel - Calgary, CA
Graeme Colin Mckinnon - Hartland WI, US
Ersin Bayram - Houston TX, US

International Classification:

G06T 5/00
G06T 7/00
G06N 3/08
G16H 30/40

Abstract:

Methods and systems are provided for independently removing streak artifacts and noise from medical images, using trained deep neural networks. In one embodiment, streak artifacts and noise may be selectively and independently removed from a medical image by receiving the medical image comprising streak artifacts and noise, mapping the medical image to a streak residual and a noise residual using the trained deep neural network, subtracting the streak residual from the medical image to a first extent, and subtracting the noise residual from the medical image to a second extent, to produce a de-noised medical image, and displaying the de-noised medical image via a display device.