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Inventor:
Kristoffersen; Kjell
Address:
Oslo, NO
No. of patents:
23
Patents:












Patent Number Title Of Patent Date Issued
8128563 Method and apparatus for reducing size of ultrasound transducer cable March 6, 2012
Ultrasound transducer comprises an array of elements forming rows and columns and wires within a transducer cable configured to connect at least a portion of the elements to an ultrasound system. The array comprises a central row and at least first and second outer rows positioned al
8096951 Transmit beamforming in 3-dimensional ultrasound January 17, 2012
An ultrasound system comprises a probe including a two-dimensional (2D) array of transducer elements that form an aperture having a plurality of receive elements that are configured to receive ultrasound signals. The transducer elements form at least one transmit sub-aperture that is
7952260 Ultrasound imaging system May 31, 2011
An ultrasound imaging system (100). An exemplary system (100) includes a plurality of transducer elements (136) formed in subarrays (140) and a plurality of subarray circuit units (160'), with each circuit unit (160') connected to a subarray (140) of the transducer elements (136). The
7775982 Method and system for sub-aperture processing August 17, 2010
A transducer assembly is provided including a transducer array comprising a plurality `M` of transducer elements and a sub-aperture processor comprising a plurality `P` of input channels and an output channel. The plurality `P` of input channels is coupled to the `M` transducer elements
7687976 Ultrasound imaging system March 30, 2010
An ultrasound imaging system (100). An exemplary system (100) includes a plurality of transducer elements (136) formed in subarrays (140) and a plurality of subarray circuit units (160'), with each circuit unit (160') connected to a subarray (140) of the transducer elements (136). The
7527592 Ultrasound probe sub-aperture processing May 5, 2009
A sub-aperture transceiver system for an ultrasound probe includes a signal processor, receive signal connections connecting the signal processor to a receive aperture comprising acoustic transceiver elements, and transmit signal connections coupled to a transmit aperture that includ
7527591 Ultrasound probe distributed beamformer May 5, 2009
An ultrasound beamforming probe includes an array of transducer elements and a processing board that carries a signal processor. Receive signal connections, for a receive aperture formed from multiple transducer elements, are coupled to the first signal processor. A location memory is
7451650 Systems and methods for adjusting gain within an ultrasound probe November 18, 2008
Systems and methods for adjusting gain are described. The systems includes a probe. The probe includes a housing, a transducer element configured to receive a signal, and an adjustable gain amplifier located inside the housing and configured to adjust a gain provided to the signal based
7338450 Method and apparatus for performing CW doppler ultrasound utilizing a 2D matrix array March 4, 2008
An ultrasound system is provided comprising an ultrasound probe having a 2D matrix of transducer elements transmitting a continuous wave (CW) Doppler transmit signal into an object of interest. The CW transmit signal includes a dither signal component and the probe receives ultrasoun
7297118 Ultrasound method and apparatus for multi-line acquisition November 20, 2007
A method and apparatus for acquiring multi-line acquisition ultrasound data. Ultrasound signals are transmitted into an area of interest. Echo signals are acquired and analyzed to produce a first data stream associated with a first receive beam. The first data stream is decimated by
7022074 Method and apparatus for generating a multi-level ultrasound pulse April 4, 2006
A method and apparatus for generating ultrasound pulses comprises producing a multi-level pulse sequence including a series of pulses. The series of pulses includes at least three pulses having three different amplitudes, respectively. The amplitudes are at least one of a positive no
6863655 Ultrasound display of tissue, tracking and tagging March 8, 2005
An ultrasound machine that generates a pattern of indicia corresponding to tracked moving structure, such as a cardiac wall tissue that is displayed on a monitor. The pattern of indicia is generated by displaying a set of tagging symbols related to the tracked movement of the structure o
6652462 Ultrasound display of movement parameter gradients November 25, 2003
An ultrasound machine is disclosed that displays a color representation of moving structure, such as a cardiac wall tissue, within a region of interest on a monitor. The color representation is generated by displaying color hues corresponding to a movement parameter of the structure, suc
6592522 Ultrasound display of displacement July 15, 2003
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 related to a set of signal va
6579240 Ultrasound display of selected movement parameter values June 17, 2003
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 characteristic related to a m
6390984 Method and apparatus for locking sample volume onto moving vessel in pulsed doppler ultrasound i May 21, 2002
A method and an apparatus for automatically maintaining the Doppler sample gate position at a preselected vessel position in B-mode or color flow images during tissue or probe motion. The sample gate is locked onto the selected vessel automatically when the vessel position has changed.
6039692 Method and apparatus for processing ultrasound signals March 21, 2000
Methods and apparatuses for processing ultrasound signals. An approximation signal is generated to approximate an undesirable component of an input signal. The input signal may represent an ultrasound (e.g., Doppler) echo from a body. The approximation signal is used to remove the undesi
5820561 Analysis and measurement of temporal tissue velocity information October 13, 1998
A method for extracting anatomical M-Mode displays of tissue velocity information along arbitrary curved polygons that can track curved organs such as myocard is described. The generated images can display the temporal velocity variations in a curved organ such as myocard in a single
5662115 Method for determining the velocity-time spectrum of blood flow September 2, 1997
Method for determining the velocity-time spectrum of blood flow in a living body by means of an ultrasonic pulsed wave Doppler system, comprising:sequential transmission of pulsed ultrasonic waves and receiving a corresponding sequence of echo signals,sampling the received echo signals at on
5560363 Method for calculation of blood velocity and blood velocity spread from multi gated doppler sign October 1, 1996
A method for velocity estimation based on a complex demodulated doppler signal in a multi-gated doppler. The method is based on the autocorrelation function estimates of the complex demodulated doppler signal. Contribution to the correlation function from the receiver noise is found
4934373 Method and apparatus for synthesizing a continuous estimate signal from segments of a Gaussian s June 19, 1990
Method and apparatus for synthesizing a continuous estimate signal of a Gaussian signal resulting from ultrasonic Doppler measurement on a fluid flow, from existing segments of the Gaussian signal. The segment signals are first stored and there is at the same time calculated a characteri
4932415 Method of color coding two dimensional ulltrasonic doppler velocity images of blood flow on a di June 12, 1990
A pulsed ultrasonic beam is swept over an image field and the backscattered signal is sampled for a multiplicity of timelags to obtain signals from a multiplicity of depths along the beam, the signals forming a two-dimensional set of range cells. A combination of the bandwidth and po
4848354 Method and apparatus for investigating a circulatory system in living biological structures July 18, 1989
Method and apparatus for generating a multidimensional map of blood velocities in the circulatory system of living species, using the Doppler effect of backscattered ultrasound from the blood, with real time presentation on a display device, with the ability to select small sample vo










 
 
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