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| Number | Title | Issue Date |
| 7347820 | Phased array acoustic system for 3D imaging of moving parts The invention relates to an ultrasound phased array imaging system comprising: probe (10) with a 2-D array of transducer elements (12) for acquiring 3-D ultrasound data of a volume of a body, including moving tissue and fluid flow; a beamforming system... | 03/25/2008 |
| 7338447 | Blood flow oxygen measurement system and method An apparatus for measuring physiologic tissues perfusion information including: a first device producing a first output indicative of blood flow of a patient; a second device producing a second output indicative of oxygen content of the blood; and a processor combin... | 03/04/2008 |
| 7270635 | Flow-rate conservative doppler estimate A new method is introduced to evaluate the flow through a constriction based on Doppler data and the principle of mass conservation. This principle, properly inserted within a combination of data rearrangements allows the extraction of the complete velocity field an... | 09/18/2007 |
| 7186219 | Calibration of a doppler velocimeter for stroke volume determination Doppler Velocimetry is a widely used method for estimating stroke volume (SV). The accuracy and reliability of its measurement however, is dependant on a) the correct assessment of the aortic valve cross-sectional area (CSA), and b) the max... | 03/06/2007 |
| 7165010 | Vessel evaluation methods, apparatus, computer-readable media and signals Methods, apparatuses, media and signals for evaluating a vessel. One method includes receiving at least one measurement of a physical dimension of the vessel, and producing an indication of abnormality in the vessel, in response to the at least one received measurem... | 01/16/2007 |
| 7125384 | Ultrasonograph An ultrasonic diagnostic apparatus is disclosed which can reduce the device amount of a receiving circuit, while obtaining the shape of an excellent received beam. In this ultrasonic diagnostic apparatus, a plurality of transducer elements are arrayed and used as an... | 10/24/2006 |
| 7119810 | Graphics processing unit for simulation or medical diagnostic imaging Methods and systems provide simulation or medical diagnostic imaging with a graphics processing unit. Data to be processed by a graphics processing unit is transferred from a source to the graphics processing unit without copying by the central processing unit. For ... | 10/10/2006 |
| 7066888 | Method and apparatus for determining an ultrasound fluid flow centerline A method and associated apparatus are disclosed for determining the location of an effective center of fluid flow in a vessel using an ultrasound apparatus. Ultrasound energy is propagated along an axis of propagation and projects upon the vessel. A Doppler-shifted ... | 06/27/2006 |
| 7037263 | Computing spatial derivatives for medical diagnostic imaging methods and systems Spatial derivatives are computed. In one method, gradients are determined from data in an acoustic domain rather than a Cartesian or display coordinate domain. The gradients determined from data in the acoustic domain are then transformed to the Cartesian coordinate... | 05/02/2006 |
| 7011630 | Methods for computing rolling analyte measurement values, microprocessors comprising programming to control performance of the methods, and analyte monitoring devices employing the methods The present invention relates to methods to increase the number of analyte-related signals used to provide analyte measurement values, e.g., when two or more analyte-related signals are used to obtain a single analyte measurement value a “rolling” value based on... | 03/14/2006 |
| 6943033 | MAGNETIC RESONANCE METHOD FOR ASSESING AMIDE PROTON TRANSFER EFFECTS BETWEEN AMIDE PROTONS OF ENDOGENOUS MOBILE PROTEINS AND PEPTIDES AND TISSUE WATER IN SITU AND ITS USE FOR IMAGING PH AND MOBILE PROTEIN/PEPTIDE CONTENT Featured is an MRI/NMR methodology or process to detect amide protons of endogenous mobile proteins and peptides via the water signal. Such methods and processes can be used for the purposes of detection of pH effects and labile amide proton content of mobile protei... | 09/13/2005 |
| 6939301 | Automatic volume measurements: an application for 3D ultrasound A method for determining the volume of an irregularly shaped body part or body such as a fetus using a 3D ultrasonic image composed of light and dark pixels. A caliper is placed on a portion whose volume is to be determined and a computer having the image, automatic... | 09/06/2005 |
| 6913576 | Method for measuring blood flow A technique for determining blood flow in a living body by changing the thermal energy level by a predetermined amount at a site in a blood flow path and detecting temperatures at locations upstream and downstream of the site. The temperature difference at such loca... | 07/05/2005 |
| 6679846 | Diagnostic ultrasound imaging method and system with improved frame rate A medical diagnostic ultrasonic imaging system acquires receive beams from spatially distinct transmit beams. The receive beams alternate in type between at least first and second types across the region being imaged. The first and second types of receive... | 01/20/2004 |
| 6663568 | Ultrasound techniques A method of estimating the volume flow in a vessel utilizing ultrasound techniques including the steps of imaging the vessel utilizing an ultrasonic transducer array so as to produce fluid velocity information for the vessel, the plane formed by the beams... | 12/16/2003 |
| 6638221 | Ultrasound diagnostic apparatus, and image processing method Two-dimensional distribution data of velocities on a moving object in an object to be examined is obtained. A motion field which defines the motion direction of a tissue is stored. A plurality of tracking points are obtained in a tissue range in the two-d... | 10/28/2003 |
| 6626838 | Blood flow meter apparatus and method of use A strobed blood flow meter provides periodic measurements of blood flow velocity or volumetric blood flow over a cardiac cycle at reduced average power consumption, which is advantageous for reducing battery size, and extending device battery life, such a... | 09/30/2003 |
| 6595923 | Ultrasonic doppler flow phantom An ultrasonic Doppler flow phantom is described which is formed of tissue-mimicking material containing a plurality of fluid flow paths through which fluid is pumped. The fluid flow paths are made of tubing and each extends over a different portion of the... | 07/22/2003 |
| 6592522 | Ultrasound display of displacement An ultrasound machine that generates a color representation of moving structure, such as cardiac wall tissue within a region of interest, and is displayed on a monitor. The color representation is generated by displaying at least one color characteristic ... | 07/15/2003 |
| 6589179 | Three-dimensional doppler ultrasonic imaging system and method An ultrasonic imaging system uses a specially configured scanhead to provide ultrasound return signals that are processed by an imaging unit to generate a three-dimensional Doppler ultrasound image. One embodiment of the scanhead includes a first pair of ... | 07/08/2003 |
| 6579240 | Ultrasound display of selected movement parameter values An ultrasound machine is disclosed that generates a color representation of moving structure, such as a cardiac wall tissue within a region of interest, and is displayed on a monitor. The color representation is generated by displaying at least one color ... | 06/17/2003 |
| 6544181 | Method and apparatus for measuring volume flow and area for a dynamic orifice Techniques are provided for obtaining selected instantaneous area measurements for a dynamic orifice through which blood is flowing in at least one direction, for obtaining instantaneous flow rates of blood passing through such a dynamic orifice and for o... | 04/08/2003 |
| 6450959 | Ultrasound B-mode and doppler flow imaging An ultrasound scanning system (10) includes a plurality of range gates (71-74) responsive to ultrasound waves for generating a plurality of Doppler signal samples representing different depth increments within a subject (S) being studied. A logic unit (30... | 09/17/2002 |
| 6318179 | Ultrasound based quantitative motion measurement using speckle size estimation An ultrasound system determines the relative movement in a first direction (F1) of first matter, such as blood flow, and second matter, such as an artery wall, in a subject under study (S). A beam (B1) of ultrasound waves defining a plurality of beam posi... | 11/20/2001 |
| 6213949 | System for estimating bladder volume A system for estimating the volume of fluid in the bladder sequentially scans the bladder with ultrasonic beams that section the bladder into a number of transverse planes. The system determines, from the scan lines associated with a given plane, a plural... | 04/10/2001 |
| 6151404 | Anatomical visualization system An anatomical visualization system is provided which includes a first database comprising a plurality of 2-D slice images generated by scanning a structure. The 2D slice images are stored in a first data format. A second database comprising a 3-D computer... | 11/21/2000 |
| 6071242 | Method and apparatus for cross-sectional color doppler volume flow measurement A system is disclosed for measuring volume flow through vessel. A longitudinal area of a vessel in a body is scanned using a color Doppler imaging method, such that an imaging plane is formed approximately through the center of said vessel. A number of co... | 06/06/2000 |
| 5997480 | Ultrasonic system and method for measurement of fluid flow In an ultrasound system and method, a transducer connects to an estimator for obtaining first and second blood flow parameters associated with first and second scan line directions, respectively, in a first scan plane. One beam substantially covering a cr... | 12/07/1999 |
| 5910117 | Real time color doppler ultrasound imaging A method for generating color Doppler images is implemented in real time using digital processing steps implemented on multi-purpose microprocessors. Processing is reduced by estimating velocity only when a tissue threshold decision for a given sample ind... | 06/08/1999 |
| 5895358 | Method and apparatus for mapping color flow velocity data into display intensities A method and an apparatus for mitigating aliasing when imaging moving fluid or tissue using velocity Doppler shift data. To eliminate the effects of slight aliasing in the velocity mode, symmetrical (or non-directional) velocity/color maps are used to map... | 04/20/1999 |
| 5720291 | Three dimensional medical ultrasonic diagnostic image of tissue texture and vasculature A medical diagnostic ultrasound system is described in which ultrasonic B mode tissue information and Doppler flow information is acquired from a volumetric region of the body and processed together to render a three dimensional image. The three dimension... | 02/24/1998 |
| 5690111 | Ultrasound diagnostic apparatus An ultrasound diagnostic apparatus comprises an ultrasonic transducer and a transmitter/receiver circuit for scanning a plane section of a human body under examination with ultrasonic beams repeatedly and with a given frame period to thereby obtain receiv... | 11/25/1997 |
| 5682896 | Method and apparatus for generating volume flow measurement A computer implemented method and apparatus for generating a vascular volume flow measurement in a living subject using an ultrasonic system by determining a velocity measurement and an area measurement at the same location in a blood vessel. The present ... | 11/04/1997 |
| 5653237 | Apparatus for measuring biological signal An apparatus for measuring biological signals includes: a whole function input unit for detecting a parameter representing a whole function of an organ of a body to be measured; a regional function input unit for detecting a parameter representing a regio... | 08/05/1997 |
| 5623930 | Ultrasound system for flow measurement An ultrasonic transducer is rotated until the displayed vessel has the smallest area. The transducer is then tilted to various angles with respect to a normal to a surface to obtain area and velocity measurements of fluid flow inside a vessel in a body im... | 04/29/1997 |
| 5575290 | Coarse-fine ultrasound transducer array for medical imaging The ultrasound transducer array defines an average row spacing along the elevation for receiving transducer elements that differs from an average row spacing along the elevation for transmitting transducer elements. In one embodiment a relatively "coarse"... | 11/19/1996 |
| 5555886 | Apparatus and method for detecting blood vessel size and direction for doppler flow measurement system An ultrasonic diagnostic system is provided that automatically measures a volumetric flow rate of a vessel presented on a graphical display by estimating the vessel size and direction. The Doppler information signals received from an ultrasonic transducer... | 09/17/1996 |
| 5515857 | Ultrasonic diagnostic apparatus A bloodstream velocity image is formed by scanning a two-dimensional region including a blood vessel in a body to be examined with an ultrasonic wave. A velocity profile is formed by distributing either one of average velocities and maximum velocities of ... | 05/14/1996 |
| 5505204 | Ultrasonic blood volume flow rate meter A volume flow meter for displaying two-dimensional volume flow through a vessel, comprising an ultrasound instrument with scan head, a location and orientation sensor mounted to the scan head, and a computer connected to the ultrasound instrument and the ... | 04/09/1996 |
| 5501224 | Ultrasonic diagnostic apparatus An ultrasonic diagnostic apparatus including a probe which transmits a burst wave of ultrasonic pulses into a target in a body and receives reflected echo signals, a transmission unit which drives the probe, a receiver which delays the echo signals from t... | 03/26/1996 |
