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William F Avrin

from San Diego, CA
Age ~71
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Also known as:
Bill F Avrin
Phone and address:
9598 Carroll Canyon Rd APT 165, San Diego, CA 92126
(858) 549-9431
Connected to:
Jonas Avrin, 45Curtis L Avrit, 55Jennie Avritt, 65Julie E Avritt, 39Sandra S Avritt, 81Frank B Avruch, 96Adam Avrunin, 53Fridrikh Z Avrushenko, 86John J Avrutis, 61Bostjan Avsec, 53

William Avrin Phones & Addresses

  • 9598 Carroll Canyon Rd APT 165, San Diego, CA 92126 (858) 549-9431
  • Ithaca, NY

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William Avrin

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William Avrin

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Location:
Greater San Diego Area
Industry:
Research

Publications

Us Patents

Ferromagnetic Foreign Body Detection Using Magnetics

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US Patent:
6418335, Jul 9, 2002
Filed:
Dec 15, 2000
Appl. No.:
09/741774
Inventors:
William F. Avrin - San Diego CA
Peter V. Czipott - San Diego CA
R. Kemp Massengill - Leucadia CA
Sankaran Kumar - San Marcos CA
Assignee:
MedNovus, Inc. - Leucadia CA
Quantum Magnetics, Inc. - San Diego CA
International Classification:
A61B 505
US Classification:
600409, 324260, 32420721
Abstract:
A probe instrument using room-temperature sensor(s) that can measure magnetic susceptibilities variations. The instrument includes room temperature magnetic sensors, and detects the sample, that is the tissue response to an applied field coil. The sensors that can be used include magnetoresistive, fluxgate and magnetoinductive sensors. The applied field coil dimensions are chosen so that the applied field is optimized for maximum response from the item of interest while minimizing the effects due to the overlying tissue and at the same time not unduly increasing the sensitivity of the instrument to adjacent organs. To minimize noise introduced in the sensor due to fluctuations in the applied field, the applied field is canceled at the position of the sensor. To overcome variations in the sensor output due to fluctuations in the applied field, change in the ambient temperature and mechanical relaxation of the instrument, the detector assembly is oscillated while the examined patient remains stationary.

Ferromagnetic Foreign Body Detection With Background Canceling

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US Patent:
6496713, Dec 17, 2002
Filed:
Sep 21, 2001
Appl. No.:
09/960878
Inventors:
William F. Avrin - San Diego CA
Peter V. Czipott - San Diego CA
R. Kemp Massengill - Leucadia CA
Assignee:
MedNovus, Inc. - Escondido CA
Quantum Magnetics, Inc. - San Diego CA
International Classification:
A61B 505
US Classification:
600409, 32420721, 324260
Abstract:
Methods are disclosed for non-invasive screening of the human body by rejecting the magnetic response from biological tissues in the region of interest and outputting data corresponding to the magnetic response of a ferromagnetic foreign body within the region of interest.

Material Thickness Measurement Using Magnetic Information

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US Patent:
6586930, Jul 1, 2003
Filed:
Apr 28, 2000
Appl. No.:
09/560467
Inventors:
Sankaran Kumar - San Marcos CA
William Frank Avrin - San Diego CA
Suresh Meempat Menon - San Diego CA
Assignee:
Quantum Magnetics, Inc. - San Diego CA
International Classification:
G01B 706
US Classification:
324225, 324229, 324231
Abstract:
An apparatus for and a method of measuring material thickness with magnetics. The thickness monitoring system includes a thickness monitor, a probe, and a target. In a preferred embodiment, the probe is positioned on one side of an article for which the thickness is to be determined. The target is positioned on the opposite side of the article from the probe. The probe includes an excitation coil, a field compensation coil, and a magnetic sensor. The method includes energizing the excitation coil to excite a response from the target, compensating for the effect of the excitation coil on the magnetic sensor, measuring the response of the target with the magnetic sensor, and determining the thickness of the article from the measured response. The preferred mode of energizing the excitation coil is with an AC waveform; however DC, multi-frequency AC, or a combination of AC and DC waveforms may be used.

Susceptometers For Foreign Body Detection

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US Patent:
6965792, Nov 15, 2005
Filed:
Dec 18, 2001
Appl. No.:
10/025191
Inventors:
William F. Avrin - San Diego CA, US
Sankaran Kumar - San Marcos CA, US
Peter V. Czipott - San Diego CA, US
Richard J. McClure - San Diego CA, US
R. Kemp Massengill - Leucadia CA, US
Assignee:
MedNovus, Inc. - Leucadia CA
Quantum Magnetics, Inc. - San Diego CA
International Classification:
A61B005/05
US Classification:
600407, 600409, 600410, 324307
Abstract:
Methods and apparatus for minimizing the effects of temperature drift in a magnetic susceptibility measurement instrument, such as an instrument used in pre-MRI screening for the presence of ferromagnetic foreign bodies. The magnetic field source and magnetic sensors can be combined into a single, rigid unit. The stability and sensitivity required in high quality magnetic susceptibility measurements can be achieved through symmetrical design of the source-sensor unit, minimization of thermal stresses, minimization of temperature variations, use of materials with low thermal expansion coefficients, or through appropriate combinations thereof. Use of patient eye movement where an eye is being screened, use of a water bag between the patient and the instrument, or use of telemedicine to facilitate performance of the necessary computations can also be incorporated.

Simplified Water-Bag Technique For Magnetic Susceptibility Measurements On The Human Body And Other Specimens

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US Patent:
7047059, May 16, 2006
Filed:
Mar 27, 2001
Appl. No.:
09/818700
Inventors:
William F. Avrin - San Diego CA, US
Sankaran Kumar - San Marcos CA, US
Peter V. Czipott - San Diego CA, US
Walter N. Freeman - San Diego CA, US
Assignee:
Quantum Magnetics, Inc - San Diego CA
International Classification:
A61B 5/05
US Classification:
600409, 324260, 32420721
Abstract:
A probe instrument using room-temperature sensor(s) that can measure variations in magnetic susceptibilities. The instrument has sufficient resolution to monitor paramagnetic materials in a human body, such as iron in a human liver, by noninvasively examining patients with iron-overload diseases. The instrument includes room temperature magnetic sensors, and detects the sample, that is, the tissue response to an alternating current field applied by an applied field coil. The applied field coil dimensions are chosen so that the applied field is optimized for maximum response from the liver while minimizing the effects due to the overlying abdominal tissue and at the same time not unduly increasing the sensitivity of the instrument to the lung. To overcome variations in the sensor output due to fluctuations in the applied field, change in the ambient temperature and mechanical relaxation of the instrument, the sensor-sample distance is modulated. The detector assembly is oscillated while the examined patient remains stationary.

Security Screening Method And Apparatus

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US Patent:
7106056, Sep 12, 2006
Filed:
Nov 5, 2003
Appl. No.:
10/703147
Inventors:
Peter V. Czipott - San Diego CA, US
Sankaran Kumar - San Marcos CA, US
Stephen Wolff - San Diego CA, US
Lowell J. Burnett - El Cajon CA, US
Richard J. McClure - San Diego CA, US
R. Kemp Massengill - Leucadia CA, US
William J. Avrin - San Diego CA, US
Assignee:
MedNovus, Inc. - Leucadia CA
Quantum Magnetics, Inc. - San Diego CA
International Classification:
G01R 33/00
US Classification:
324244, 324228, 324260
Abstract:
A method and apparatus to screen individuals specifically for paramagnetic or ferromagnetic objects they may be carrying or wearing, before they enter a security area. The device comprises either a screening portal or a compact, hand-held magnetic gradiometer and its electronics. The device places all of the sensor arrays in close proximity to all parts of a subject's body, for screening purposes.

Magnetic Resonance Imaging Screening Method And Apparatus

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US Patent:
7315166, Jan 1, 2008
Filed:
Oct 7, 2003
Appl. No.:
10/681033
Inventors:
Peter V. Czipott - San Diego CA, US
Sankaran Kumar - San Marcos CA, US
Stephen Wolff - San Diego CA, US
Lowell J. Burnett - El Cajon CA, US
Richard J. McClure - San Diego CA, US
R. Kemp Massengill - Leucadia CA, US
William F. Avrin - San Diego CA, US
Assignee:
MedNovus, Inc. - Leucadia CA
Quantum Magnetics, Inc. - San Diego CA
International Classification:
G01R 33/00
US Classification:
324244, 324228, 324260
Abstract:
A method and apparatus to screen individuals specifically for paramagnetic or ferromagnetic objects they may be carrying or wearing, before they enter the high-field region of an MRI suite. The device comprises either a screening portal or a compact, hand-held magnetic gradiometer and its electronics. The device places all of the sensor arrays in close proximity to all parts of a subject's body, for screening purposes.

Method For Excluding Magnetic Objects From Magnetic Resonance Imaging Facility

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US Patent:
8035377, Oct 11, 2011
Filed:
Jul 24, 2007
Appl. No.:
11/880976
Inventors:
Peter V. Czipott - San Diego CA, US
Sankaran Kumar - San Macros CA, US
Stephen Wolff - San Diego CA, US
Lowell J. Burnett - El Cajon CA, US
Richard J. McClure - San Diego CA, US
R. Kemp Massengill - Leucadia CA, US
William F. Avrin - San Diego CA, US
Assignee:
Mednovus, Inc. - Levcadia CA
Quantum Magnetics, Inc. - San Diego CA
International Classification:
G01V 3/00
US Classification:
324307
Abstract:
A method to screen individuals specifically for paramagnetic or ferromagnetic objects they may be carrying or wearing, before they enter the high-field region of an MRI suite. The device used comprises either a screening portal or a compact, hand-held magnetic gradiometer and its electronics. The method places all of the sensor arrays in close proximity to all parts of a subject's body, for screening purposes.
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William F Avrin from San Diego, CA, age ~71 Get Report