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| Number | Title | Issue Date |
| 8100832 | Ultrasound diagnostic apparatus A transmission wave corresponding to an FM continuous wave having been subjected to an FM modulation processing is transmitted from a transmitting transducer. A pre-amplifier generates a reception RF signal and outputs the reception RF signal to a receiving mixer. T... | 01/24/2012 |
| 7678053 | Delay adding device and ultrasonic diagnostic apparatus The present invention aims to provide a delay device having an analog delay line adaptable to a plurality of frequencies with a less number of taps. The analog delay line has a maximum delay amount equivalent to a wavelength from over a ⅜ wavelength of a predeterm... | 03/16/2010 |
| 7513873 | Low-noise ultrasound method and beamformer system for doppler processing An ultrasonic low-noise analog beamformer for Doppler acquisition achieves high sensitivity by translating the frequency of the ultrasound echoes to an intermediate frequency, which is well above of the 1/f corner. This is accomplished by beamforming the downconvert... | 04/07/2009 |
| 7338450 | Method and apparatus for performing CW doppler ultrasound utilizing a 2D matrix array 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 ... | 03/04/2008 |
| 7221972 | Ultrasound system with protocol-driven user interface The embodiments described herein relate to stepping through the stages of a protocol using an input device and a protocol controller for a medical diagnostic imaging system. The protocol controller may be operative to transition from one stage to a next stage in the... | 05/22/2007 |
| 7169108 | CW beam former in an ASIC The present invention relates to a continuous wave Doppler beam former application specific integrated circuit (CW-ASIC). The beam former may be a transmit or receive beam former. In one mode the CW-ASIC applies to a continuous wave Doppler beam former application s... | 01/30/2007 |
| 7087023 | Microfabricated ultrasonic transducers with bias polarity beam profile control and method of operating the same A capacitive microfabricated ultrasonic transducer with control of elevation phase through alternating bias polarity is disclosed. Such control of elevation phase results in simple ultrasonic probes with excellent slice thickness attributes. Furthermore, tight spati... | 08/08/2006 |
| 7037267 | Medical diagnostic methods, systems, and related equipment A medical diagnostic method, system and related equipment particularly adapted to diagnose disorders of the blood circulation serving the head and neck, and especially the brain. A preferred use of the system is early, rapid, accurate, diagnosis of stroke, especiall... | 05/02/2006 |
| 6936009 | Matching layer having gradient in impedance for ultrasound transducers A matching layer for ultrasound transducers has a gradient in impedance value from one surface to the other surface of the matching layer. The matching layer is composed of a plurality of sublayers made of composite materials and securely attached together and is di... | 08/30/2005 |
| 6726628 | Angle-independent doppler system for screening An apparatus and method for detecting the highest velocity of fluid flow with in a volume having multiple sources of fluid flow with different velocities. There are multiple pairs of receiving transducers arranged about a region wherein each transducer in a pair is ... | 04/27/2004 |
| 6723051 | Systems and methods for assessing vascular health The present invention relates generally to systems and methods for assessing blood flow in blood vessels, for assessing vascular health, for conducting clinical trials, for screening therapeutic interventions for adverse effects, and for assessing the effects of ris... | 04/20/2004 |
| 6712765 | Ultrasonic scanning method and apparatus An ultrasonic imaging technique and apparatus with a portable scanning head. In one form of the scanning head, a reflective scanner is provided with a variable focus, and in another form the scanning head has several reflective facts of respectively different focal ... | 03/30/2004 |
| 6699193 | Decision support systems and methods for assessing vascular health The present invention relates generally to systems and methods for assessing blood flow in blood vessels, for assessing vascular health, for conducting clinical trials, for screening therapeutic interventions for adverse effects, and for assessing the eff... | 03/02/2004 |
| 6656122 | Systems and methods for screening for adverse effects of a treatment The present invention relates generally to systems and methods for assessing blood flow in blood vessels, for assessing vascular health, for conducting clinical trials, for screening therapeutic interventions for adverse effects, and for assessing the eff... | 12/02/2003 |
| 6648826 | CW beam former in an ASIC A continuous wave Doppler beam former comprises an application specific integrated circuit (CW-ASIC). The beam former may be a transmit or receive beam former and forming a medical ultrasound system comprising a plurality of channels forming a CW analog r... | 11/18/2003 |
| 6558323 | Ultrasound transducer array By bonding a conductive first matching layer 14 to the acoustic radiation surface side, which is the bottom side, of a belt-shape piezoelectric element on both faces with electrodes provided, and using a dicing machine to form divided grooves 16, an array... | 05/06/2003 |
| 6558329 | Medical ultrasound receive architecture An ultrasound system that performs image processing in the digital domain, including CW Doppler. The ultrasound system is provided with a transducer having a plurality of elements and an ultrasound receiver with a plurality of channels. Each channel recei... | 05/06/2003 |
| 6547737 | Intelligent transcranial doppler probe A system for automatic manipulation of a transcranial Doppler probe device designed for placement on a patient's head comprising a bi-temporal probe hanger, a cylindrical probe housing having an inner electrical wiring, an ultrasound transducer with cable... | 04/15/2003 |
| 6527722 | Wide dynamic range continuous wave (CW) Doppler receiver A Doppler receiver has a wide dynamic range and operates in a differential mode. In one embodiment, the invention is a wide dynamic range continuous wave (CW) Doppler receiver, comprising a differential fixed frequency output mixer configured to receive a... | 03/04/2003 |
| 6346081 | Angle-independent continuous wave doppler device An apparatus for determining the velocity of a fluid flowing through a lumen comprises a first diffraction grating transducer (DGT) responsive to a continuous wave (CW) input and operable in a first mode for producing a first signal beam at a first freque... | 02/12/2002 |
| 6030221 | Ultrasonic apparatus and for precisely locating cavitations within jawbones and the like A method and apparatus detects cavitation in the jawbone of human. The apparatus generates an ultrasonic pulse and passes the pulse through the jawbone of a human. The pulse is detected by an ultrasonic receiving unit. Attenuations in the amplitude of the... | 02/29/2000 |
| 5908391 | Method and apparatus for enhancing resolution and sensitivity in color flow ultrasound imaging using multiple transmit focal zones A method and an apparatus for increasing the spatial resolution and sensitivity of a color flow image while maintaining a desired acoustic frame rate. The ultrasound energy is concentrated at a more narrowly defined focal region, which allows for increase... | 06/01/1999 |
| 5807259 | Ultrasonic continuous wave doppler blood flow-meter An ultrasonic continuous wave doppler blood flow-meter deflects an ultrasonic continuous wave to an arbitrary angle and transmits it into an organism, thereby measuring a blood flow speed of the organism. Two continuous sine wave signals of different phas... | 09/15/1998 |
| 5562097 | User control for steerable CW doppler A method and apparatus of operating an ultrasound imaging apparatus so as to obtain continuous wave (CW) Doppler data from a user selected area comprises operating a multiple element transducer array and its associated delay and signal processing circuitr... | 10/08/1996 |
| 5406949 | Digital processing for steerable CW doppler A Doppler medical ultrasound apparatus, comprising means for transmitting ultrasound energy into a body, a plurality of parallel channels for receiving echoes of the ultrasound energy, digitizing the echoes, and digitally forming a received beam signal th... | 04/18/1995 |
| 5197477 | Ultrasonic Doppler flow measurement system with tissue motion discrimination An ultrasonic diagnostic system for measuring fluid flow velocities through Doppler techniques is provided which eliminates the effects of tissue motion from fluid flow velocity information. In a preferred embodiment Doppler information signal are discrim... | 03/30/1993 |
| 4986276 | Flow detector An ultrasonic, transcutaneous blood flow detector. A protective mounting cup is positionable against the skin of a patient for the transfer of ultrasonic energy into and out of the patient's body. The detector utilizes only a single piezoelectric transduc... | 01/22/1991 |
| 4926872 | Ultrasonic transducer system and method for the operation thereof This invention provides an ultrasonic transducer system which utilizes a reconfigurable delay line to perform a variety of processing functions. In particular, for a preferred embodiment, the delay line utilized to sum the outputs of transducer elements i... | 05/22/1990 |
| 4924869 | Ultrasonic diagnostic system To apply our new invention in the most preferred application mode, we used an ultrasonic diagnostic system that can instantaneously switch over to the CW Doppler method or B-mode imaging method when both methods are combined using a commonly applicable ar... | 05/15/1990 |
| 4886069 | Method of, and apparatus for, obtaining a plurality of different return energy imaging beams responsive to a single excitation event A method for receiving a return signal from each of plurality M of different beam directions in media excited by a single excitation event, is to: assign each of the M directions to be substantially equally separated, by a small angular displacement from ... | 12/12/1989 |
| 4880010 | Method of and apparatus for ultrasonic imaging Ultrasonic imaging is effected using a line focused transmitter 1 and a line focused receiver 3 arranged with their focal lines (fT, fR) crossing, and controlled such that the crossing point P of the focal lines scans a target to be ... | 11/14/1989 |
| 4866613 | Ultrasonic continuous wave blood flowmeter using Doppler effect analysis An ultrasonic continuous wave blood flowmeter using Doppler effect analysis includes a filter having a cut-off frequency determined in part by a manually selected zero shift value. A tranducing device, in the flowmeter includes a transmission element and ... | 09/12/1989 |
| 4844083 | Ultrasonic imaging apparatus An ultrasonic imaging apparatus having an ultrasonic transducer for applying an ultrasonic beam to a subject, thereby to perform sector scanning. Echo waves are obtained by the sector scanning. The transducer converts the echo waves into echo signals. Ech... | 07/04/1989 |
| 4796634 | Methods and apparatus for monitoring cardiac output A method and apparatus for ascertaining the cardiac output of a human patient, said method comprising the steps of: measuring the systolic velocity of the blood flowing through the patient's descending aorta; determining the cross-sectional area of the pa... | 01/10/1989 |
| 4751929 | Ultrasonic bloodstream diagnostic apparatus with dual displays of velocity profiles and average flow velocity A ultrasonic bloodstream diagnostic apparatus wherein the frequencies of Doppler shift ultrasound information are analyzed by a frequency analyzer to derive a power spectrum represented by N-bit data. The N-bit data comprises (K+M+L) bits, where K represe... | 06/21/1988 |
| 4651742 | Ultrasonic Doppler diagnostic device An ultrasonic diagnostic device for measuring the velocity of blood flow within a living body comprises a receiver for amplifying a received wave in accordance with a logarithmic amplification characteristic and at least one inverse logarithmic converter ... | 03/24/1987 |
| 4651745 | Ultrasonic Doppler diagnostic device An ultrasonic diagnostic device for measuring the velocity of blood flow within a living body comprises a transmitter for transmitting an ultrasonic wave into the body, a receiver for amplifying the part of the ultrasonic wave reflected from the body, con... | 03/24/1987 |
| 4622978 | Ultrasonic diagnosing apparatus An ultrasonic diagnosing apparatus transmits an ultrasonic wave into a subject under examination, thereby obtaining a tomogram and blood flow information of the subject. This ultrasonic diagnosing apparatus is equipped with an ultrasonic probe provided wi... | 11/18/1986 |
| 4608993 | Blood flow measurement device and method The disclosure relates to systems for measuring blood flow by detecting Doppler shift of ultrasound reflected by blood components moving in a blood vessel. The systems employ electronic techniques for providing accurate tracking of portions of the frequen... | 09/02/1986 |
| 4586512 | Device for localized heating of biological tissues A device for therapeutic heating by hyperthermia comprises an emitter which focuses ultrasonic radiation into biological tissues and produces localized heating, especially for the treatment of tumors. The radiation emitter consists of a piezoelectric plat... | 05/06/1986 |
