Chi-Yin Lee

US Patent:

7951085, May 31, 2011

Filed:

Jun 9, 2008

Appl. No.:

12/135975

Inventors:

Chi-Yin Lee - Bellevue WA, US
Paul Donald Freiburger - Issaquah WA, US
Mark G. Magrane - Redmond WA, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

A61B 8/00

US Classification:

600453, 600437

Abstract:

Methods and systems for automatic optimization in spectral Doppler ultrasound imaging are provided. The value for one or more spectral Doppler parameter is optimized using numerical optimization rather than predefined sampling. Various spectral Doppler parameters are set, such as a position of the gate, gate size, transmit frequency, filter settings, Doppler gain, beamline orientation or angle of intersection between the gate position and the scan line, aperture size, or other spectral Doppler transmit or receive parameters effecting the spectral Doppler imaging. A processor automatically calculates a setting or value for one or more of the spectral Doppler parameters, resulting in more objective optimization than provided by a user setting.

US Patent:

20050033175, Feb 10, 2005

Filed:

Jul 21, 2003

Appl. No.:

10/624120

Inventors:

Chi-Yin Lee - Bellevue WA, US
Paul Freiburger - Issaquah WA, US
Mark Magrane - Redmond WA, US

International Classification:

A61B008/06

US Classification:

600453000

Abstract:

Methods and systems for automatic optimization in spectral Doppler ultrasound imaging are provided. The value for one or more spectral Doppler parameter is optimized using numerical optimization rather than predefined sampling. Various spectral Doppler parameters are set, such as a position of the gate, gate size, transmit frequency, filter settings, Doppler gain, beamline orientation or angle of intersection between the gate position and the scan line, aperture size, or other spectral Doppler transmit or receive parameters effecting the spectral Doppler imaging. A processor automatically calculates a setting or value for one or more of the spectral Doppler parameters, resulting in more objective optimization than provided by a user setting.

US Patent:

20050215892, Sep 29, 2005

Filed:

Mar 22, 2004

Appl. No.:

10/805783

Inventors:

Charles Emery - Renton WA, US
Zoran Banjanin - Newcastle WA, US
Chi-Yin Lee - Bellevue WA, US
Alampallam Ramachandran - Sammamish WA, US
John Dennis - Renton WA, US

International Classification:

A61B008/00
A61B008/06

US Classification:

600437000, 600459000

Abstract:

A system and method for cooling an entirely or partially immersed mechanical or other type of transducer array is disclosed. Motion/flow of the immersion fluid is induced either by motion of the mechanical transducer itself, where the transducer is of the mechanically movable type, or by a separate motion-inducing mechanism located in or coupled with the fluid-filled, or partially filled, array housing. The resultant fluid flow/motion increases, i.e. more efficiently utilizes, the thermal carrying capacity of the immersion fluid by more uniformly distributing the thermal energy convected from the transducer array throughout the fluid volume. This results in an improved ability to cool the transducer array. The disclosed cooling system and method may be used in such a way so as to not substantially inhibit operation of the transducer array.

US Patent:

20080214934, Sep 4, 2008

Filed:

Mar 2, 2007

Appl. No.:

11/713209

Inventors:

Chi-Yin Lee - Bellevue WA, US
James E. Chomas - San Francisco CA, US
Ismayil M. Guracar - Redwood City CA, US

International Classification:

A61B 8/00

US Classification:

600437

Abstract:

Contrast agent enhanced medical diagnostic imaging is improved by selecting particular frames of data. Frames of data are acquired over time. Information from the frames of data are combined, such as for a time intensity curve or maximum intensity processing. Rather than combining information from each of the frames, information from some frames is not used. Frames are selected for inclusion. In one embodiment, the selection is based on one type of data (e.g., B-mode) for combining information for another type of data (e.g., contrast agent data).

US Patent:

20090187106, Jul 23, 2009

Filed:

Jan 23, 2008

Appl. No.:

12/011178

Inventors:

Chi-Yin Lee - Bellevue WA, US
Ismayil M. Guracar - Redwood City CA, US
Helene C. Houle - Sunnyvale CA, US

International Classification:

A61B 8/00

US Classification:

600458

Abstract:

Contrast agent enhanced medical diagnostic imaging is provided. Frames of data from common phase periods are grouped. Motion correction is performed within each common phase group. An image representing contrast agents is formed from a combination of the frames within each common phase, motion corrected group.

US Patent:

20130261429, Oct 3, 2013

Filed:

Mar 30, 2012

Appl. No.:

13/436718

Inventors:

Chi-Yin Lee - Sammamish WA, US
Liexiang Fan - Sammamish WA, US
Caroline Maleke - Bellevue WA, US
Kevin Michael Sekins - Yarrow Point WA, US
Patrick Gross - Langensendelbach, DE

International Classification:

A61B 5/055
A61B 8/00

US Classification:

600411

Abstract:

Magnetic resonance and ultrasound parametric image is fused or combined. MRI and ultrasound imaging are used to acquire the same type of parametric images. Fused data is created by combining ultrasound and MRI parametric data at times for which both types of data are available. Rather than sacrificing rate, fused data is created for times for which MRI data is not acquired. A curve representing the values of the parameter over time is fit to the available MRI and ultrasound data of each location, resulting in fused data at times for which MRI data is not available.

US Patent:

20130274589, Oct 17, 2013

Filed:

Apr 16, 2012

Appl. No.:

13/448319

Inventors:

Patrick Gross - Langensendelbach, DE
Caroline Maleke - Bellevue WA, US
Stephen J. Hsu - Issaquah WA, US
Chi-Yin Lee - Sammamish WA, US
Jerry Hopple - Seattle WA, US
Xiaozheng Jenny Zeng - Sammamish WA, US

Assignee:

Siemens Aktiengesellschaft - Munich
Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

A61B 8/00
A61B 6/03
A61B 5/055

US Classification:

600411, 600431

Abstract:

Scan timing of contrast agent study is provided. Ultrasound is used to determine timing of contrast agent inflow and/or outflow. The timing based on the ultrasound scanning controls scanning for MR or CT imaging. The MR or CT contrast agent imaging for MR or CT contrast agents may be synchronized using the ultrasound contrast agent flow.

US Patent:

20130296743, Nov 7, 2013

Filed:

May 2, 2012

Appl. No.:

13/462715

Inventors:

Chi-Yin Lee - Sammamish WA, US
Liexiang Fan - Sammamish WA, US
Jerry Hopple - Seattle WA, US
Stephen J. Hsu - Issaquah WA, US
Xiaozheng Zeng - Sammamish WA, US
Caroline Maleke - Bellevue WA, US
Christophe Duong - San Francisco CA, US
Kevin Michael Sekins - Yarrow Point WA, US
John Kook - Seattle WA, US
Stephen R. Barnes - Bellevue WA, US

Assignee:

Siemens Medical Solutions USA, Inc. - Malvern PA

International Classification:

A61N 7/00

US Classification:

601 3

Abstract:

Therapy control and/or monitoring is performed with an ultrasound scanner. The ultrasound scanner detects temperature to monitor therapy, and perform HIFU beam location refocusing of the therapy system based on the temperature. The monitoring is synchronized with the therapy using a trigger output of the ultrasound scanner. The trigger output responds to a scan sequence of the ultrasound scanner. To meet a given therapy plan, the scan sequence is customized, resulting in the customized trigger sequence. Three dimensional or multi-planar reconstruction rendering is used to represent temperature for monitoring feedback. The temperature at locations not being treated may be monitored. If the temperature has an undesired characteristic (e.g., too high), then the therapy is controlled by ceasing, at least temporarily.