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James S Tropp

from Berkeley, CA
Age ~76
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Also known as:
James Te Tropp, James G Tropp, Jim Tropp, James S Trapp, James T Ropp, Jim Trott
Phone and address:
37 Canyon Rd, Berkeley, CA 94704
(510) 841-1502
Related to:
Bill Troop
Connected to:
John M Tropp, 58Kathy L Tropp, 73Shan E Tropp, 52Sylvia K Tropp, 74Joachim S Tropper, 57Jared A Tropple, 45Casie D Troquille, 45Frank J Trosa, 65Dyrk J Trosclair, 58Eric Trosclair, 34

James Tropp Phones & Addresses

  • 37 Canyon Rd, Berkeley, CA 94704 (510) 841-1502 (510) 841-8218 (510) 704-8341
  • Rangeley, ME
  • Dawson, MN
  • Cambridge, MA
  • 37 Canyon Rd, Berkeley, CA 94704 (562) 328-8696

Emails

t***[email protected]

Resumes

Resumes

James Tropp Photo 1

James Tropp

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Location:
San Francisco Bay Area
Industry:
Consumer Goods
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James Tropp

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Publications

Us Patents

Method And Apparatus For Designing An Rf Coil Assembly

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US Patent:
6535084, Mar 18, 2003
Filed:
Dec 27, 2000
Appl. No.:
09/748967
Inventors:
James S. Tropp - Berkeley CA
Assignee:
GE Medical Systems Global Technology Company, LLC - Waukesha WI
International Classification:
G01V 300
US Classification:
333219, 324318, 324322
Abstract:
A method and system for designing a radio frequency (RF) coil assembly is disclosed herein. The designing scheme or tool includes determining a self inductance by solving analytically or numerically two-dimensional boundary value problems s. The scheme further includes determining at least one mutual inductance by solving analytically or numerically the two-dimensional boundary value problems. The ratio of the mutual inductance and the self inductance represents a magnetic coefficient of coupling of the RF coil assembly.

Shielded Tem Surface Array For Parallel Imaging

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US Patent:
7015695, Mar 21, 2006
Filed:
Apr 19, 2004
Appl. No.:
10/709171
Inventors:
James S. Tropp - Berkeley CA, US
Daniel K. Sodickson - Newton MA, US
Michael A. Ohliger - Cambridge MA, US
Assignee:
GE Medical Systems Global Technology Company, LLC - Waukesha WI
International Classification:
G01V 3/00
US Classification:
324318, 324309
Abstract:
A MRI system having a scanning unit adapted to generate a parallel scan includes a substantially cylindrical member defining a scanning bore and a RF coil assembly mounted in the scanning bore. The RF coil assembly includes a TEM surface resonator.

Shielded Dome Resonator For Mr Scanning Of A Cerebrum

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US Patent:
7250764, Jul 31, 2007
Filed:
Sep 12, 2003
Appl. No.:
10/605184
Inventors:
James S. Tropp - Berkeley CA, US
Assignee:
GE Medical Systems Global Technology Company, LLC - Waukesha WI
International Classification:
G01V 3/00
US Classification:
324318, 324309
Abstract:
A dome resonator () includes a resonator circuit () that excites and/or receives radio frequency magnetic resonance signals that emanate from a region of interest (). The resonator circuit () includes multiple longitudinal conductive elements () that are coupled at a first end () and a second end () and tapered from the first end () to the second end (). A resonator circuit support () is coupled to and supports the resonator circuit (). A shield () is coupled to the resonator circuit support () and electrically isolates the resonator circuit () from a surrounding environment.

Systems, Methods And Apparatus For An Endo-Rectal Receive-Only Probe

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US Patent:
7945308, May 17, 2011
Filed:
Dec 27, 2005
Appl. No.:
11/320361
Inventors:
James S. Tropp - Berkeley CA, US
Paul D. Calderon - Castro Valley CA, US
Daniel Blackburn Vigneron - Corte Madera CA, US
Lucas Guillermo Carvajal - San Francisco CA, US
Konstantinos George Karpodinis - Redding CA, US
Assignee:
General Electric Company - Schenectady NY
International Classification:
A61B 5/05
US Classification:
600423, 600420
Abstract:
Systems, methods and apparatus are provided through which a compact pod insertable into the rectum for Magnetic Resonance Imaging/Magnetic Resonance Spectroscopy (MRI/MRS) examination of the prostate and containing two receive coils, each connected to transmit blocking and pre-tuned trap circuitry which can be superimposed within the pod in close proximity, can, without either circuit interfering with the other, efficiently gather, for imaging and tissue analysis, radio frequency signals emanating from magnetically disturbed nuclei in prostate tissue.

Dual-Frequency Coil Array For A Magnetic Resonance Imaging (Mri) System

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US Patent:
20100301862, Dec 2, 2010
Filed:
May 29, 2009
Appl. No.:
12/475068
Inventors:
James S. Tropp - Berkeley CA, US
Paul Calderon - Castro Valley CA, US
Fraser Robb - Aurora OH, US
Donald McCune - N. Canton OH, US
Thomas Grafendorfer - Menlo Park CA, US
Keerthi Shet - Sunnyvale CA, US
International Classification:
G01R 33/34
US Classification:
324318
Abstract:
A dual-frequency coil array for a magnetic resonance imaging (MRI) system is provided. The coil array includes a first coil element having a pair of dual-frequency loop coils and a second coil element having a pair of dual-frequency loop coils. The coil array further includes at least one capacitive mesh configured to decouple the pairs of dual-frequency loop coils of the first and second coil elements.

System And Method Providing Preamplifier Feedback For Magnetic Resonance Imaging

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US Patent:
20110248712, Oct 13, 2011
Filed:
Apr 9, 2010
Appl. No.:
12/757782
Inventors:
Thomas Grafendorfer - Meno Park CA, US
Paul David Calderon - Castro Valley CA, US
Fraser Robb - Aurora OH, US
James S. Tropp - Berkeley CA, US
Greig Cameron Scott - Palo Alto CA, US
Shreyas Vasanawala - Stanford CA, US
International Classification:
G01R 33/44
US Classification:
324307
Abstract:
A system and method for generating preamplifier feedback in magnetic resonance imaging (MRI) systems are provided. A preamplifier arrangement for the MRI system includes a plurality of preamplifiers with each of the preamplifiers connected to a different channel of a multi-channel coil array of the MRI system. The preamplifier arrangement further includes a feedback network connected to each of the plurality of preamplifiers with each of the feedback networks configured to generate negative feedback at one or more oscillation frequencies.

System For Travelling Wave Mr Imaging At Low Frequencies And Method Of Making Same

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US Patent:
20130082710, Apr 4, 2013
Filed:
Sep 30, 2011
Appl. No.:
13/250202
Inventors:
James S. Tropp - Berkeley CA, US
International Classification:
G01R 33/345
H01F 41/02
G01R 33/28
US Classification:
324322, 324318, 296021
Abstract:
A system for travelling wave MR imaging includes an MR imaging apparatus having a magnet coil assembly having a magnet coil bore extending therethrough, a gradient coil assembly positioned within the magnet coil bore and having a gradient coil bore extending therethrough, and a waveguide positioned within the gradient coil bore. The waveguide has a waveguide bore extending therethrough. A computer is programmed to access a scan sequence comprising an RF pulse sequence and execute the scan sequence. During execution of the scan sequence, the computer is programmed to operate the waveguide in a hybrid mode to transmit an RF pulse of the RF pulse scan sequence as a travelling wave at a frequency lower than a cutoff frequency of a principal mode of the waveguide absent a dielectric core and to acquire MR signals from an imaging subject positioned within the waveguide bore.

Fourier Shifting Of Voxel Boundaries In Mr Chemical Shift Imaging Spectroscopy

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US Patent:
50721828, Dec 10, 1991
Filed:
Jul 13, 1989
Appl. No.:
7/379234
Inventors:
Kevin A. Derby - South San Francisco CA
K. Christine Hawryszko - Millbrae CA
James S. Tropp - Berkeley CA
Assignee:
Diasonics, Inc. - South San Francisco CA
International Classification:
G01R 3320
US Classification:
324309
Abstract:
In a phase encoded chemical shift imaging (CSI) system, phase shifting in k space is used to shift voxels so as to translate them in one or more dimensions so that one or more voxels maximally encloses an object of interest. The position of a structure of interest is located via a 1H "scout" image, and the Shift Theorem for finite Fourier transforms is applied to shift voxel boundaries in one, two or three dimensions so as to maximally enclose the structure in a minimal number of voxels. Voxel shifts thus may be accomplished computationally by minimal manipulation of the raw data--after the patient has left the imaging facility. The resulting spectral data corresponding to the structure of interest is not as subject to dilution by spectrum of the surrounding tissue.
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James S Tropp from Berkeley, CA, age ~76 Get Report