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Hector E Avram

from Foster City, CA
Age ~74
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Also known as:
Hector Eduardo Avram, Heactor Avram
Phone and address:
625 Plymouth Ln, San Mateo, CA 94404
(650) 573-6263
Related to:
Michael MooreNoemi Ester Avram, 73Dario D Avram, 43Noemi K Deavram, 73Romina N Avram, 42Javier D Fidalgo
Connected to:
Alexandru V Avram, 41Anne Avram, 78Catalina Avram, 59Cristian P Avram, 43Donna V Avram, 76George A Avram, 34James Avram, 80John W Avram, 98Marcel V Avram, 64Nora C Avram, 54

Hector Avram Phones & Addresses

  • 625 Plymouth Ln, San Mateo, CA 94404 (650) 573-6263
  • Foster City, CA

Work

Position: Professional/Technical

Education

Degree: High school graduate or higher

Resumes

Resumes

Hector Avram Photo 1

Mri Consultant At Avram Consulting

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Location:
San Francisco Bay Area
Industry:
Medical Devices
Experience:
AVRAM CONSULTING (Medical Devices industry): MRI CONSULTANT,  (2009-Present) TOSHIBA MEDICAL RESEARCH INSTITUTE, USA (TMRU) (Medical Devices industry): MRI CONTRACTOR,  (2009-2009) Developed sequence software for radial k-space data acquisition coverage....
Hector Avram Photo 2

Hector Avram

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Publications

Us Patents

Water-Fat Separation For Fast Spin Echo Imaging In An Inhomogeneous Field With Progressive Encoding

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US Patent:
7141972, Nov 28, 2006
Filed:
Nov 5, 2004
Appl. No.:
10/981739
Inventors:
Hector C. Avram - Foster City CA, US
Ilya S. Simovsky - Redwood City CA, US
Assignee:
Toshiba America MRI, Inc. - Tustin CA
International Classification:
G01V 3/00
US Classification:
324309, 324307
Abstract:
A method to separate two chemically-shifted components of water (w) and fat (f) signals by: (i) estimating the field inhomogeneity β through a treatment of the residuals of the Moore-Penrose solution of the following equations: cos(αβ)*w+cos [α(1+β)]*f=real (I) and sin(αβ)*w+sin [α(1+β)]*f=imaginary (I), and (ii) using the estimated β to determine the resulting solution for w and f from the original input signals I.

Fast Spin Echo Mri Method Compatible With Cpmg Violation

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US Patent:
7538548, May 26, 2009
Filed:
May 25, 2006
Appl. No.:
11/420224
Inventors:
Hector E. Avram - Foster City CA, US
James D. Hale - Berkeley CA, US
Ilya Simovsky - Redwood City CA, US
David M. Kramer - Corte Madera CA, US
Assignee:
Toshiba Medical Systems Corp. - Otawara-Shi
International Classification:
G01V 3/00
US Classification:
324307
Abstract:
In preferred embodiments, a fast spin echo imaging technique is provided that is insensitive to violations of the Carr Purcell Meiboom Gill (CPMG) condition. Diffusion gradients disrupt the CPMG condition, and, hence, the present fast spin echo method is compatible with diffusion measurements and diffusion weighted imaging. The preferred embodiments of the present technique involve splitting of spin echoes into echo pairs. Spin echoes are split by adjustment (in magnitude or duration) of an initial readout gradient pulse. A train of echo pairs is captured. A first image is constructed using the first echoes of each pair. Also, a second image is constructed using the second echoes of each pair. Hybrid radial Cartesian methods are used for constructing the first and second images. The first and second images are constructed independently of one another.

Magnetic Resonance Imaging Compensated For Very Rapid Variations In Static Magnetic Field

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US Patent:
20010054898, Dec 27, 2001
Filed:
Mar 10, 1999
Appl. No.:
09/265568
Inventors:
ANDREW LI - SOUTH SAN FRANCISCO CA, US
DAVID M GOLDHABER - SAN MATEO CA, US
WEIGUO ZHANG - FOSTER CITY CA, US
HECTOR AVRAM - SOUTH SAN FRANCISCO CA, US
DAVID M KRAMER - CORTE MADERA CA, US
International Classification:
G01V003/00
US Classification:
324/307000, 324/309000, 324/318000
Abstract:
A magnetic resonance imaging method and apparatus gathers NMR image data over a sequence of measurement cycles. First magnetic gradient pulses are superimposed on a nominally static magnetic field to selectively address NMR RF excitations for at least one predetermined volume and second magnetic gradient pulses are superimposed on the static magnetic field at other times in a measurement cycle. At least one further of the measurement cycles is performed during which at least one of the second gradient pulses is omitted so as to produce calibration data representative of the magnetic field then existing in the predetermined volume. The calibration data is used to produce MRI data compensated for phase angle errors which otherwise would be present due to undesirable changes with respect to time in the magnetic field actually present in said predetermined volume. The MRI data is compensated for phase angle errors by applying to the measured image data the inverse of the phase angles determined during the at least one further of the measurement cycles.

Method And Apparatus For Imaging Instruments During Interventional Mri Using Asymmetric Spin Echo Sequences

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US Patent:
63320886, Dec 18, 2001
Filed:
Nov 12, 1998
Appl. No.:
9/190599
Inventors:
Leon Kaufman - San Francisco CA
Hector Avram - Foster City CA
Assignee:
Toshiba America MRI, Inc. - Tustin CA
International Classification:
A61B 505
US Classification:
600410
Abstract:
An asymmetric spin-echo (ASE) sequence having a variable asymmetry (. DELTA. TE) with respect to the RF pulse is used for imaging paramagnetic, diamagnetic or ferromagnetic instruments within tissues during interventional MRI procedures. The degree of asymmetry introduced determines an apparent size of the imaged instrument. In one embodiment of the invention, the amount of asymmetry is varied as a function of the phase encoding gradient steps. In this manner, the sequence is made sensitive to local gradients in the magnetic field but left insensitive to large scale variations such as those introduced by main magnetic field inhomogeneities.

Magnetic Resonance Imaging (Mri) Using Fast Spin Echo (Fse) Imaging Process

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US Patent:
60257148, Feb 15, 2000
Filed:
Apr 25, 1997
Appl. No.:
8/847813
Inventors:
Hector E. Avram - Foster City CA
Robert Wagner - El Cerrito CA
Leon Kaufman - San Francisco CA
Andrew Li - San Francisco CA
Assignee:
Toshiba America MRI, Inc. - Tustin CA
International Classification:
G01V 300
US Classification:
324309
Abstract:
A magnetic resonance imaging sequence synergistically combines Half Fourier Transform complex conjugation with shared echo imaging. The Half Fourier Transform complex conjugation reduces data acquisition time and permits the data acquisition per scan to be accomplished with a single RF transmission loop. The shared echo imaging provides multiple images of an image plane from a single scan, yet with different contrast and a larger number of slices. In an alternative embodiment, phase correction is provided between the non-shared echo responses.

Mri Using Auxiliary Insert Gradient Coil To Produce Intense Auxiliary Magnetic Gradient Pulses

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US Patent:
52352790, Aug 10, 1993
Filed:
Feb 19, 1992
Appl. No.:
7/837317
Inventors:
Leon Kaufman - San Francisco CA
Joseph W. Carlson - Kensington CA
Hector E. Avram - Foster City CA
Assignee:
The Regents of the University of California - Oakland CA
International Classification:
G01V 300
US Classification:
324309
Abstract:
An auxiliary insert MRI gradient coil is used to produce intense auxiliary magnetic gradient pulses during MRI sequences to improve MRI system performance. Although the auxiliary gradient coil may be of considerably reduced dimensions, thus, having considerably reduced uniformity, linearity and/or reproducibility than standard MRI gradient coils, coordinated use of both the regular MRI gradient coils and the auxiliary gradient coil can produce considerably enhanced MRI system performance in certain applications. Such auxiliary magnetic gradient coil may be used, for example, to provide spoiler pulses between MRI spin echo subsequences, as diffusion gradient pulses in diffusion MRI studies or as the oscillating gradient used to form successive gradient echoes in echo planar imaging.
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Hector E Avram from Foster City, CA, age ~74 Get Report