Search

James W Wiskin

from Novato, CA
Age ~67
Get Report
Also known as:
James E Wiskin, Jim W Wiskin
Phone and address:
900 Reichert Ave UNIT 509, Novato, CA 94945
(801) 484-6907
Connected to:
John D Wiskind, 56Megan K Wiskirchen, 43Nicholas J Wiskirchen, 41Arthur L Wiskoff, 60Kay E Wiskofske, 66Danielle K Wiskow, 35Kathryn A Wiskow, 72Carol J Wiskup, 61Kimberly Wiskup, 63Jeannie Wiskus, 71

James Wiskin Phones & Addresses

  • 900 Reichert Ave UNIT 509, Novato, CA 94945 (801) 484-6907
  • 1461 Blaine Ave, Salt Lake Cty, UT 84105
  • 50 Central Campus Dr #2480, Salt Lake City, UT 84112
  • Bellevue, WA

Resumes

Resumes

James Wiskin Photo 1

Principal Scientist

View page
Location:
Salt Lake City, UT
Industry:
Medical Devices
Work:
Qt Ultrasound Llc
Principal Scientist
Cvu
Principal Scientist
Techniscan Jan 1988 - Oct 2011
Senior Research Scientist, Co-Founder
Techniscan Medical Systems 1986 - Jun 2011
Mathematician and Cofounder
University of Utah Sep 2006 - Mar 2009
Adj Assistant Professor
Education:
University of Utah 1991
Doctorates, Doctor of Philosophy, Mathematics Dalhousie University
Master of Science, Masters, Mathematics, Biology, Applied Mathematics University of Waterloo
Skills:
Algorithms
Mathematical Modeling
Biomedical Engineering
Scientific Computing
Image Processing
Medical Devices
R&D
Matlab
Signal Processing
Electromagnetics
Physics
Science
Digital Imaging
Numerical Analysis
Simulations
Statistics
High Performance Computing
Machine Learning
Modeling
Applied Mathematics
Inverse Problems
Mathematica
Research and Development
Medical Physics
Ultrasound
Programming
Characterization
Numerical Simulation
Fortran
James Wiskin Photo 2

James Wiskin

View page

Publications

Us Patents

Apparatus And Method For Imaging Objects With Wavefields

View page
US Patent:
6587540, Jul 1, 2003
Filed:
Dec 21, 1999
Appl. No.:
09/471106
Inventors:
Steven A. Johnson - Salt Lake City UT
David T. Borup - Salt Lake City UT
James Wiskin - Salt Lake City UT
Michael J. Berggren - Salt Lake City UT
Assignee:
Techniscan, Inc. - Salt Lake City UT
International Classification:
A61B 663
US Classification:
378 62, 378 4
Abstract:
This invention describes a method for increasing the speed of the parabolic marching method by about a factor of 256. Firstly, to form true 3-D images or 3-D assembled from 2-D slices. Secondly, the frequency of operation can be increased to 5 MHz to match the operating frequency of reflection tomography. This allow the improved imaging of speed of sound which in turn is used to correct errors in focusing delays in reflection tomography imaging. This allows reflection tomography to reach or closely approach its theoretical spatial resolution of  to  wave lengths. A third benefit of increasing the operating frequency of inverse scattering to 5 MHz is the improved out of topographic plane spatial resolution. This improves the ability to detect small lesions. It also allow the use of small transducers and narrower beams so that slices can be made closer to the chest wall.

Apparatus And Method For Imaging Objects With Wavefields

View page
US Patent:
6636584, Oct 21, 2003
Filed:
Dec 17, 2001
Appl. No.:
10/024035
Inventors:
Steven A. Johnson - Salt Lake City UT
David T. Borup - Salt Lake City UT
James Wiskin - Salt Lake City UT
Michael J. Berggren - Salt Lake City UT
Assignee:
TechniScan, Inc. - Salt Lake City UT
International Classification:
G01N 2300
US Classification:
378901, 378 62, 378 37, 600437
Abstract:
A method for increasing the speed of the parabolic marching method by about a factor of 256. This increase in speed can be used to accomplish a number of important objectives. Firstly, the speed can be used to collect data to form true 3-D images or 3-D assembled from 2-D slices. Speed allows larger images to be made. Secondly, the frequency of operation can be increased to 5 MHz to match the operating frequency of reflection tomography. This allow the improved imaging of speed of sound which in turn is used to correct errors in focusing delays in reflection tomography imaging. This allows reflection tomography to reach or closely approach its theoretical spatial resolution of  to  wave lengths. A third benefit of increasing the operating frequency of inverse scattering to 5 MHz is the improved out of topographic plane spatial resolution. This improves the ability to detect small lesions.

Apparatus And Method For Imaging Objects With Wavefields

View page
US Patent:
7570742, Aug 4, 2009
Filed:
Jul 7, 2003
Appl. No.:
10/615569
Inventors:
Steven A. Johnson - Salt Lake City UT, US
David T. Borup - Salt Lake City UT, US
James Wiskin - Salt Lake City UT, US
Michael J. Berggren - Salt Lake City UT, US
Assignee:
Techniscan, Inc. - Salt Lake City UT
International Classification:
G01N 23/00
US Classification:
378901, 378 8, 378 90, 378 37, 378 62, 378 87, 378 96, 378 98, 600437
Abstract:
This invention describes a method for increasing the speed of the parabolic marching method by about a factor of 256. This increase in speed can be used to accomplish a number of important objectives. Firstly, the speed can be used to collect data to form true 3-D images or 3-D assembled from 2-D slices. Speed allows larger images to be made. Secondly, the frequency of operation can be increased to 5 MHz to match the operating frequency of reflection tomography. This allow the improved imaging of speed of sound which in turn is used to correct errors in focusing delays in reflection tomography imaging. This allows reflection tomography to reach or closely approach its theoretical spatial resolution of to wave lengths. A third benefit of increasing the operating frequency of inverse scattering to 5 MHz is the improved out of topographic plane spatial resolution. This improves the ability to detect small lesions.

Apparatus And Method For Imaging Objects With Wavefields

View page
US Patent:
7684846, Mar 23, 2010
Filed:
Sep 9, 2005
Appl. No.:
11/222541
Inventors:
Steven A. Johnson - Salt Lake City UT, US
David T. Borup - Salt Lake City UT, US
James Wiskin - Salt Lake City UT, US
Michael J. Berggren - Salt Lake City UT, US
Assignee:
Techniscan, Inc - Salt Lake City UT
International Classification:
A61B 5/00
G01N 23/00
US Classification:
600407, 181101
Abstract:
A transmission wave field imaging method, comprising the transmission of an incident wave field into an object, the incident wave field propagating into the object and, at least, partially scattering. Also includes the measuring of a wave field transmitted, at least in part, through an object to obtain a measured wave field, the measured wave field based, in part, on the incident wave field and the object. Additionally, the processing of the measured wave field utilizing a recursive reconstruction algorithm to generate an image data set representing at least one image of the object.

Method For Imaging And Treating A Breast

View page
US Patent:
7699783, Apr 20, 2010
Filed:
Jun 15, 2005
Appl. No.:
11/154006
Inventors:
Barry K. Hanover - Park City UT, US
Steven A. Johnson - Salt Lake City UT, US
David Robinson - Park City UT, US
James Wiskin - Salt Lake City UT, US
David Borup - Salt Lake City UT, US
Assignee:
Techniscan, Inc. - Salt Lake City UT
International Classification:
A61B 8/00
US Classification:
600459, 600437
Abstract:
A method for imaging and treating a breast of a patient includes: disposing the breast into a bath of medium; physically securing the breast and maintaining the breast in a repeatable position and in a repeatable shape with respect to a chest wall of the patient; scanning the breast with ultrasound signals from transducer arrays to create a three-dimensional image of the breast and to locate a position of a tumor or a lesion in the breast with respect to the three-dimensional image; and further treating the tumor or the lesion of the breast while maintaining the position and the shape of the breast with respect to the chest wall of the patient as during scanning.

Breast Scanning System

View page
US Patent:
7771360, Aug 10, 2010
Filed:
Apr 8, 2004
Appl. No.:
10/821407
Inventors:
Steven A. Johnson - Salt Lake City UT, US
Michael Berggren - Salt Lake City UT, US
David T. Borup - Salt Lake City UT, US
Barry K. Hanover - Salt Lake City UT, US
Rita Hanover - Salt Lake City UT, US
Martin Kammeyer - Sandy UT, US
Scott Olsen - Salt Lake City UT, US
Jeffrey Pattee - Salt Lake City UT, US
Frank L. Setinsek - Fruit Heights UT, US
Kortlan D. Stewart - Salt Lake City UT, US
James Wiskin - Salt Lake City UT, US
Assignee:
Techniscan, Inc. - Salt Lake City UT
International Classification:
A61B 8/00
US Classification:
600459, 600437
Abstract:
A breast scanning system scans a breast of a patient with transducer arrays that transmit and receive ultrasound signals in a bath containing a medium, such as a liquid. A table is disposable over the bath to receive the patient thereon, and has an aperture formed in the table and positionable over the bath to receive the breast of the patient pendent therethrough and into the bath. The table is linearly vertically displaceable with respect to the bath. The system includes a preconditioning tank to precondition the liquid prior to being introduced into the bath. The bath includes means for securing the breast within the bath.

Apparatus And Method For Imaging Objects With Wavefields

View page
US Patent:
7841982, Nov 30, 2010
Filed:
Sep 9, 2005
Appl. No.:
11/223084
Inventors:
Steven A. Johnson - Salt Lake City UT, US
David T. Borup - Salt Lake City UT, US
James Wiskin - Salt Lake City UT, US
Michael J. Berggren - Salt Lake City UT, US
Assignee:
Techniscan, Inc. - Salt Lake City UT
International Classification:
A61B 5/00
G01N 23/00
US Classification:
600437, 600442, 600443, 600448, 181101
Abstract:
A transmission wave field imaging method, comprising the transmission of an incident wave field into an object, the incident wave field propagating into the object and, at least, partially scattering. Also includes the measuring of a wave field transmitted, at least in part, through an object to obtain a measured wave field, the measured wave field based, in part, on the incident wave field and the object. Additionally, the processing of the measured wave field utilizing a parabolic approximation reconstruction algorithm to generate an image data set representing at least one image of the object.

Imaging Method Utilizing Attenuation And Speed Parameters In Inverse Scattering Techniques

View page
US Patent:
8246543, Aug 21, 2012
Filed:
May 14, 2008
Appl. No.:
12/152637
Inventors:
Steven A. Johnson - Salt Lake City UT, US
David T. Borup - Salt Lake City UT, US
James W. Wiskin - Salt Lake City UT, US
Assignee:
CVUS Clinical Trials, LLC - Salt Lake City UT
International Classification:
A61B 8/00
G06K 9/20
US Classification:
600442, 600437, 382131
Abstract:
Methods for imaging the internal structures of an object using an acoustic wave field are provided. In one aspect, for example, a method of imaging internals of a physical object using acoustic waves may include transmitting an acoustic wave field toward the object, receiving a resultant acoustic wave field with a receiver, where the resultant acoustic wave field is in response to the transmitted acoustic wave field reflected from or transmitted through the object, and determining a predicted resultant acoustic wave field derived from a model of the object. The method may also include determining a residual between the predicted resultant acoustic wave field and the resultant acoustic wave field, and back propagating the residual to determine corrections to the model of the object. In another aspect, the above recited steps may be further iterated to successively refine the model of the object over a number of iterations until a predefined condition is reached.
Control profile
James W Wiskin from Novato, CA, age ~67 Get Report