David W Mcdaniel

US Patent:

6661866, Dec 9, 2003

Filed:

Aug 28, 2002

Appl. No.:

10/064912

Inventors:

Mark Kenneth Limkeman - Brookfield WI
Alexander Ganin - Whitefish Bay WI
Charles William Stearns - New Berlin WI
David Leo McDaniel - Dousman WI
Robert Franklin Senzig - Germantown WI

Assignee:

GE Medical Systems Global Technology Company, LLC - Waukesha WI

International Classification:

G01N 2300

US Classification:

378 19, 25036304, 378 4

Abstract:

A combined emission-transmission imaging apparatus, the apparatus comprising oppositely facing first and second photon detector segments disposed on opposite sides of an imaging area and defining the imaging area there between and a radiation source disposed adjacent and outside the imaging area and adjacent at least one of the detector segments, the source generating a fan beam of radiation that emanates from a focal point and juxtaposed such that the fan beam is directed along a trajectory through the imaging area and toward the other of the detector segments, wherein the segments collect both emission and transmission radiation.

US Patent:

7129497, Oct 31, 2006

Filed:

May 11, 2004

Appl. No.:

10/843503

Inventors:

Scott David Wollenweber - Waukesha WI, US
Charles William Stearns - New Berlin WI, US
David Leo McDaniel - Dousman WI, US

International Classification:

G01T 1/164

US Classification:

25036309

Abstract:

A method and system for normalization of a positron emission tomography system are provided. The method includes determining a plurality of block busy fractions for a positron emission tomography system and using the determined block busy fractions to provide correction during normalization of the positron emission tomography system.

US Patent:

7227149, Jun 5, 2007

Filed:

Dec 30, 2004

Appl. No.:

11/026236

Inventors:

Charles William Stearns - New Berlin WI, US
David Leo McDaniel - Dousman WI, US
John Jay Williams - Hartland WI, US
Alexander Ganin - Whitefish Bay WI, US
Ravindra Mohan Manjeshwar - Guilderland NY, US
Yiping Shao - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01T 1/164

US Classification:

25036303, 25036301, 25036302, 2503361, 250361 R

Abstract:

Methods and systems for controlling a positron emission tomography (PET) system are provided. The method includes receiving timing information from a PET system during an imaging scan using the PET system. The method further includes processing the received timing information and timing bias information relating to the PET system to control the PET system.

US Patent:

7667457, Feb 23, 2010

Filed:

Dec 22, 2006

Appl. No.:

11/615324

Inventors:

Anton M. Linz - Mukwonago WI, US
Chang L. Kim - Waukesha WI, US
Jim L. Malaney - Pewaukee WI, US
David L. McDaniel - Dousman WI, US
Robert S. Stormont - Hartland WI, US
Ricardo Becerra - Waukesha WI, US

Assignee:

General Electric Co. - Schenectady NY

International Classification:

G01V 3/00

US Classification:

324307, 324318

Abstract:

A gamma ray detector ring for a combined positron emission tomography (PET) and magnetic resonance imaging (MRI) system is integrated into a radio frequency (RF) coil assembly such that the detector ring is integrated with a RF shield. Each gamma ray detector in the detector ring includes a scintillator component that emits light when a gamma ray is detected and a photodetector component designed to be sensitive to the frequency of light produced by the scintillator. A RF shield may be integrated into a detector ring such that the RF shield is positioned between the scintillator and photodetector components of each detector, thereby saving valuable radial space within the imaging system. Multiple such detector rings may be located adjacent to one another to increase axial coverage and enable three-dimensional PET imaging techniques.

US Patent:

8467644, Jun 18, 2013

Filed:

Dec 28, 2011

Appl. No.:

13/338704

Inventors:

Chang Kim - Waukesha WI, US
David McDaniel - Waukesha WI, US
Gary McBroom - Dousman WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G02B 6/26
G02B 6/42
G02B 6/00

US Classification:

385 39, 385147, 362610

Abstract:

A method of fabricating a light guide assembly includes the steps of providing an array of generally frustum-shaped light guides made of a light-transmissive material, providing an optical isolation frame of interconnected slats made of an opaque material, wherein the slats are arranged and profiled to correspondingly match the gaps between the light guides and the outer gap around the periphery of the light guide array, and bonding the light guide array and the optical isolation frame to each other.

US Patent:

20130327932, Dec 12, 2013

Filed:

Jun 8, 2012

Appl. No.:

13/492439

Inventors:

Chang Lyong Kim - Brookfield WI, US
David Leo McDaniel - Dousman WI, US
James Lindgren Malaney - Brookfield WI, US
William Todd Peterson - Sussex WI, US
Ashwin Ashok Wagadarikar - Clifton Park NY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01T 1/20
G01T 1/166
G01T 1/24

US Classification:

2502521, 250366, 25036303

Abstract:

Methods and systems for gain calibration of a gamma ray detector are provided. One method includes measuring signals generated by one or more light sensors of a gamma ray detector, generating one or more derived curves using the measured signals as a function of bias voltage and identifying a transition point in the one or more derived curves. The method also includes determining a breakdown voltage of the one or more light sensors using the identified transition point and setting a bias of the one or more light sensors based on the determined breakdown voltage.

US Patent:

20130334428, Dec 19, 2013

Filed:

Jun 18, 2012

Appl. No.:

13/526130

Inventors:

Chang Lyong Kim - Brookfield WI, US
David Leo McDaniel - Dousman WI, US
James Lindgren Malaney - Brookfield WI, US
William Todd Peterson - Sussex WI, US
Gary V. McBroom - Dousman WI, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

G01T 1/202
G01T 1/164

US Classification:

25036303, 250366

Abstract:

Methods and systems for signal communication in gamma ray detectors are provided. One gamma ray detector includes a scintillator block having a plurality of scintillator crystals and a plurality of light sensors coupled to the scintillator crystals and having a plurality of microcells. Each of the plurality of light sensors has a first set of signal traces connected to the microcells and a second set of signal traces connected along the first set of signal traces and together forming a signal path to a summing signal trace. Each of the plurality of light sensors also has a pin-out connected to the summing signal trace.

US Patent:

49474162, Aug 7, 1990

Filed:

Oct 21, 1988

Appl. No.:

7/260769

Inventors:

James A. McFaul - Waukesha WI
Gary S. Keyes - Hartland WI
David L. McDaniel - Dousman WI

Assignee:

General Electric Company - Milwaukee WI

International Classification:

G21K 510

US Classification:

378146

Abstract:

A scanning type radiographic imaging system is disclosed which employs novel means to produce comparable radiation intensity in the object regions being radiographed. Such result is achieved with variable radiation attenuating elements having their attenuation controlled during this scanning process with novel feedback control means. The feedback control is produced with a stationary detection unit having circuit means which generates the electrical control signals.