Patents by Inventor Solange Akselrod
Solange Akselrod has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8062223Abstract: Using pulsed-wave (PW) ultrasonography for determining an aliasing-free radial velocity spectrum of matter moving in a region. Includes: transmitting into the region a plurality of pulse trains of sound waves at two or more different pulse repetition frequencies; spectrally analyzing each pulse train, for evaluating a Doppler frequency spectrum associated with each pulse train; combining frequency components of Doppler frequency spectrum of each pulse train, for obtaining aliasing-free instantaneous Doppler frequency spectrum for the region; using Doppler effect for translating aliasing-free frequency spectrum to aliasing-free radial velocity spectrum. Implementable using pulsed-wave Doppler (PWD), color flow Doppler (CFD), tissue Doppler imaging (TDI), or pulsed-wave (PW) ultrasonography. Applicable to liquid or/and solid forms of matter, moving in a two- or three-dimensional region.Type: GrantFiled: January 25, 2006Date of Patent: November 22, 2011Assignee: Ramot at Tel-Aviv University Ltd.Inventors: Gil Zwirn, Solange Akselrod
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Patent number: 7676091Abstract: A method of improving an image or a set of images, by transforming an intensity histogram thereof is disclosed. The method comprises: (a) fitting the intensity histogram to a sum of a plurality of localized functions; (b) using the plurality of localized functions to define a plurality of localized intensity histograms; (c) for each localized intensity histogram, performing at least one image enhancement procedure, thereby providing a plurality of improved localized intensity histograms; and (d) combining the plurality of improved localized intensity histograms, thereby transforming the intensity histogram of the image. In various exemplary embodiments, the method further comprises detecting clutter and/or an outline of at least one region in the image or set of images.Type: GrantFiled: January 4, 2005Date of Patent: March 9, 2010Assignee: Ramot At Tel Aviv University Ltd.Inventors: Gil Zwirn, Solange Akselrod
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Patent number: 7623912Abstract: A method of determining sleep stages from signals of electrical activity recorded of a chest of a sleeping subject, the signals being measured over a plurality of epochs.Type: GrantFiled: September 18, 2003Date of Patent: November 24, 2009Assignee: Ramot At Tel Aviv University Ltd.Inventors: Solange Akselrod, Armanda Lia Baharav, Zvika Shinar
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Publication number: 20080210016Abstract: Using pulsed-wave (PW) ultrasonography for determining an aliasing-free radial velocity spectrum of matter moving in a region. Includes: transmitting into the region a plurality of pulse trains of sound waves at two or more different pulse repetition frequencies; spectrally analyzing each pulse train, for evaluating a Doppler frequency spectrum associated with each pulse train; combining frequency components of Doppler frequency spectrum of each pulse train, for obtaining aliasing-free instantaneous Doppler frequency spectrum for the region; using Doppler effect for translating aliasing-free frequency spectrum to aliasing-free radial velocity spectrum. Implementable using pulsed-wave Doppler (PWD), color flow Doppler (CFD), tissue Doppler imaging (TDI), or pulsed-wave (PW) ultrasonography. Applicable to liquid or/and solid forms of matter, moving in a two- or three-dimensional region.Type: ApplicationFiled: January 25, 2006Publication date: September 4, 2008Applicant: Ramot At Tel Aviv University Ltd.Inventors: Gil Zwirn, Solange Akselrod
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Publication number: 20080130964Abstract: A method of improving an image or a set of images, by transforming an intensity histogram thereof is disclosed. The method comprises: (a) fitting the intensity histogram to a sum of a plurality of localized functions; (b) using the plurality of localized functions to define a plurality of localized intensity histograms; (c) for each localized intensity histogram, performing at least one image enhancement procedure, thereby providing a plurality of improved localized intensity histograms; and (d) combining the plurality of improved localized intensity histograms, thereby transforming the intensity histogram of the image. In various exemplary embodiments, the method further comprises detecting clutter and/or an outline of at least one region in the image or set of images.Type: ApplicationFiled: January 4, 2005Publication date: June 5, 2008Inventors: Gil Zwirn, Solange Akselrod
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Patent number: 7248725Abstract: A method of analyzing an ultrasound image of a target volume having therein at least two types of substances is disclosed. The method comprises: dividing a region-of-interest of the image to a set of mini-segments. The method further comprises, for each mini-segment, calculating at least two representative intensity values, respectively representing the at least two types of substances. The method further comprises applying attenuation corrections to each representative intensity value of at least a subset of the set of mini-segments, so as to map the region-of-interest according to the at least two types of substances.Type: GrantFiled: November 1, 2005Date of Patent: July 24, 2007Assignee: Ramot At Tel Avia University Ltd.Inventors: Gil Zwirn, Solange Akselrod
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Publication number: 20060235315Abstract: A method of determining sleep stages from signals of electrical activity recorded of a chest of a sleeping subject, the signals being measured over a plurality of epochs.Type: ApplicationFiled: September 18, 2003Publication date: October 19, 2006Inventors: Solange Akselrod, Armanda Baharav, Zvika Shinar
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Publication number: 20060078182Abstract: A method of analyzing an ultrasound image of a target volume having therein at least two types of substances is disclosed. The method comprises: dividing a region-of-interest of the image to a set of mini-segments. The method further comprises, for each mini-segment, calculating at least two representative intensity values, respectively representing the at least two types of substances. The method further comprises applying attenuation corrections to each representative intensity value of at least a subset of the set of mini-segments, so as to map the region-of-interest according to the at least two types of substances.Type: ApplicationFiled: November 1, 2005Publication date: April 13, 2006Inventors: Gil Zwirn, Solange Akselrod
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Patent number: 6858007Abstract: A method of characterizing an adnexal mass is disclosed, the method is effected by (a) obtaining a cross-sectional or projectional image of an examined adnex including the adnexal mass; (b) extracting boundaries of the adnexal mass; and (c) using a first algorithm for quantifying at least one morphological feature of the adnexal mass, thereby providing quantification of the at least one morphological feature.Type: GrantFiled: November 22, 1999Date of Patent: February 22, 2005Assignee: Ramot University Authority For Applied Research and Industrial Development Ltd.Inventors: Solange Akselrod, Ron Tepper, Yair Zimmer
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Patent number: 6280390Abstract: A system for non-invasively monitoring at least one hemodynamic vascular parameter of an individual is disclosed. The system comprises (a) at least two infrared detectors being positionable in a spaced apart configuration against a region of a skin of the individual above at least one blood vessel, each of said at least two infrared detectors being for individually collecting infrared spectral data from said region of the skin, said infrared spectral data corresponding to a volume of blood present within said at least one blood vessel; and (b) a processing unit being in communication with said at least two infrared detectors, said processing unit being for independently processing said infrared spectral data collected by each of said at least two infrared detectors so as to yield information pertaining to the at least one hemodynamic vascular parameter of the individual.Type: GrantFiled: December 29, 1999Date of Patent: August 28, 2001Assignee: Ramot University Authority for Applied Research and Industrial Development Ltd.Inventors: Solange Akselrod, Amir Schechter
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Patent number: 6112108Abstract: A method for diagnosing malignancy in a tumor. A waveform representative of pulsatile blood flow in the tumor is measured, and the post-systolic portion of the wave form is fit with a mathematical function such as an exponential decay curve. A decay constant greater than about 48 pixels is diagnostic of malignancy.Type: GrantFiled: September 12, 1997Date of Patent: August 29, 2000Assignee: Ramot University for Applied Research & Industrial Development Ltd.Inventors: Ron Tepper, Solange Akselrod
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Patent number: 5797840Abstract: An apparatus for time dependent power spectrum analysis of a physiological signal modulated by the autonomic nervous system. The apparatus includes a sensor for picking up a physiological signal modulated by the autonomic nervous system and a frequency selection apparatus for selecting at least one frequency inherent to the signal. The apparatus further includes a selective windowed time-frequency analysis processor for determining the power spectrum of the physiological signal within a window along the signal for the at least one frequency and an output apparatus for providing information associated with the functioning of the autonoinic nervous system as provided by the power spectrum of the physiological signal.Type: GrantFiled: February 28, 1997Date of Patent: August 25, 1998Assignee: Ramot University Authority for Applied Research & Industrial Development Ltd.Inventors: Solange Akselrod, Laurence Keselbrener
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Patent number: 5135000Abstract: A method of measuring blood flow through tissue in a region of interest including the steps: injecting an ultrasonic tracer into the blood upstream of the region of interest and also upstream of a specified reference region; utilizing the tracer-produced echo intensity function to compute: (i) the mean transit time of the tracer through the region of interest; and (ii) the blood volume within the region of interest; and dividing the results of computation (ii) by computation (i) to produce a quantitative measurement of the blood flow through the tissue in the region of interest.Type: GrantFiled: September 17, 1991Date of Patent: August 4, 1992Assignee: Raizot University Authority for Applied Research & Industrial Development Ltd.Inventors: Solange Akselrod, Victor Mor-Avi, Daniel David
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Patent number: 4945917Abstract: The method and apparatus particularly are applicable for displaying the fetal R-wave with respect to the maternal R-wave, and comprise the steps of generating a first electrical signal corresponding to the second derivative of the composite signal (maternal R-wave); generating a second electrical signal corresponding to the second derivative of the composite signal after the specified component has been removed; subtracting the second electrical signal from the first electrical signal to produce a third electrical signal; and utilizing the third electrical signal for indicating the repetition intervals (fetal R-waves) of the specified component.Type: GrantFiled: May 23, 1988Date of Patent: August 7, 1990Inventors: Solange Akselrod, Jacob Karin, Michael Hirsch
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Patent number: 4862361Abstract: Malfunctions of the cardiovascular control system may be diagnosed by examination of a patient's heart rate fluctuation power spectra. Particularly indicative of cardiovascular stress are: a level below about 0.1 (beats/min.).sup.2 in the power spectrum of heart rate fluctuations at a frequency between about 0.04 and about 0.10 Hz; a marked increase to above about 10 (beats/min.).sup.2 in a peak in the heart rate fluctuation power spectrum between about 0.04 to 0.10 Hz; and a ratio of the area under a heart rate power spectrum peak at a frequency between about 0.04 and 0.10 Hz to the area under a peak in the respiratory heart rate fluctuation power spectrum centered at the mean respiratory rate about about 0.10 Hz as having an absolute value less than 2.0 for longer than or equal to about one hour or as having an absolute value greater than about 50.Type: GrantFiled: June 5, 1985Date of Patent: August 29, 1989Assignee: Massachusetts Institute of TechnologyInventors: David Gordon, Solange Akselrod, Richard J. Cohen, Jerome C. Tu, Stephen K. Burns, Victoria H. DeLeon