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公开(公告)号：BR9801212A
公开(公告)日：1999-06-29
申请号：BR9801212
申请日：1998-03-30
Applicant: ADVANCED TECH LAB
Inventor： LITTLE BLAKE W , HWANG JUIN-JET , PFLUGRATH LAUREN S
IPC: G01N29/22 , A61B8/00 , A61B8/06 , A61B8/14 , G01N29/06 , G01S7/52 , G01S7/521 , G01S15/00 , G01S15/89 , G10K11/00 , G10K11/34 , A61N7/00
Abstract: A portable ultrasonic instrument which performs both B mode and Doppler imaging, includes a transducer array (10) mounted in a hand-held enclosure (81), with an integrated circuit transceiver (20) connected to the elements of the array just behind the transducer. The transceiver is controlled by, and provides received echo signals to, a digital beamformer (30) mounted in the hand-held enclosure (81).
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公开(公告)号：NO981475L
公开(公告)日：1998-10-05
申请号：NO981475
申请日：1998-04-01
Applicant: ADVANCED TECH LAB
Inventor： LITTLE BLAKE , HWANG JUIN-JET , PFLUGRATH LAUREN S
IPC: A61B8/00 , G01N29/22 , A61B8/06 , A61B8/14 , G01N29/06 , G01S7/52 , G01S7/521 , G01S15/00 , G01S15/89 , G10K11/00 , G10K11/34
Abstract: A portable ultrasonic instrument which performs both B mode and Doppler imaging, includes a transducer array (10) mounted in a hand-held enclosure (81), with an integrated circuit transceiver (20) connected to the elements of the array just behind the transducer. The transceiver is controlled by, and provides received echo signals to, a digital beamformer (30) mounted in the hand-held enclosure (81).
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公开(公告)号：AU4000985A
公开(公告)日：1985-10-10
申请号：AU4000985
申请日：1985-03-15
Applicant: ADVANCED TECH LAB
Inventor： BLAKER DAVID MARK , HWANG JUIN-JET , ZOBKIW CHRISTOPHER PETER
IPC: A61B8/14 , A61B8/00 , G01N29/04 , G01N29/26 , G01S7/298 , G01S7/52 , G01S7/531 , G01S7/539 , G01S7/62 , G01S15/89 , G06F17/17 , G06T11/00 , G09G1/00 , H04N5/31 , H04N7/01
Abstract: An improved scan converter for converting received echo signals representative of the amplitude of ultrasound energy returning from sampled points along a plurality of spaced apart paths distributed in an image space into signals to be displayed as display pixels in a raster scan display system. The scan converter includes a scan data memory for storing the received echo signals in quadrants of the scan data memory. Each quadrant is associated with even and odd numbered paths and sample row combinations. Sample rows are related to sample points along the spaced apart paths. The scan converter further includes a circuit for determining a gray scale value to be assigned to each selected display pixel based on a predetermined combination of four received echo signals adjacent the selected display pixel and chosen from the quadrants of the scan data memory. The improved scan converter is capable of operation in both linear and sector scan modes, and, when in the sector mode, over 90 DEG and 180 DEG sectors. Variable scaling between the image space and display space and correction of the hose error when the scanning system employs an oscillating wobbler scan head are provided. Various techniques for converting display pixel rectangular coordinates into polar coordinates in real time for raster scan display are employed.
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公开(公告)号：DE69634112T2
公开(公告)日：2005-12-08
申请号：DE69634112
申请日：1996-10-09
Applicant: ADVANCED TECH LAB
Inventor： POWERS JEFFRY EARL , BRUCE MATTHEW , AVERKIOU MICHALAKIS , HWANG JUIN-JET
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公开(公告)号：ES2235180T3
公开(公告)日：2005-07-01
申请号：ES96307359
申请日：1996-10-09
Applicant: ADVANCED TECH LAB
Inventor： POWERS JEFFRY EARL , BRUCE MATTHEW , AVERKIOU MICHALAKIS , HWANG JUIN-JET
Abstract: SE MUESTRAN METODOS Y UN APARATO PARA LA DETECCION Y VISUALIZACION DE AGENTES DE CONTRASTE ULTRASONICO. SE PROPORCIONA UN APARATO ULTRASONICO PARA LA VISUALIZACION COHERENTE DE AGENTES DE CONTRASTE ULTRASONICO, Y PARA LA DETECCION DE AGENTES DE CONTRASTE ARMONICOS. EL APARATO DE ESTA INVENCION INCLUYE UNA VISUALIZACION DUAL PARA LA VISUALIZACION SIMULTANEA DE UNA IMAGEN EN TIEMPO REAL QUE PERMITE VER LA LOCALIZACION DEL AGENTE DE CONTRASTE Y LA IMAGEN DE CONTRASTE MOMENTANEA. LOS METODOS DE DETECCION DEL AGENTE DE CONTRASTE Y VISUALIZACION INCLUYEN LA MEDICION DE LAS TASAS CARACTERISTICAS DE PERFUSION, LA VISUALIZACION DE CONTRASTE EN MULTIPLES ZONAS, LA VISUALIZACION DEL CONTRASTE EN MULTIFRECUENCIA, LA VISUALIZACION DE LA PERFUSION DEL TEJIDO, LA ELIMINACION ARTIFICIAL DE LA VISUALIZACION DEL CONTRASTE PRF, Y LA ADQUISICION DE POLARIDAD ALTERNA DE EFECTOS DE CONTRASTE NO ALTERNOS.
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Patent Agency Ranking
公开(公告)号：DE69634112D1
公开(公告)日：2005-02-03
申请号：DE69634112
申请日：1996-10-09
Applicant: ADVANCED TECH LAB
Inventor： POWERS JEFFRY EARL , BRUCE MATTHEW , AVERKIOU MICHALAKIS , HWANG JUIN-JET
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公开(公告)号：DE69424636T2
公开(公告)日：2001-01-25
申请号：DE69424636
申请日：1994-12-29
Applicant: ADVANCED TECH LAB
Inventor： ROBINSON BRENT STEPHEN , COOLEY CLIFFORD R , HWANG JUIN-JET , ENTREKIN ROBERT R
Abstract: The ultrasonic diagnostic imaging system scans an image region to receive a number of spatially arranged lines of ultrasonic image information signals. The ultrasonic line information signals are used in an interpolater to interpolate one or more lines which are spatially interlineated between each pair of spatially adjoining received lines. The interpolated lines are produced using either the received RF or demodulated IF ultrasonic image information signals. The interpolated lines are produced prior to scan conversion, and preferably prior to nonlinear processing such as detection or log compression to reduce spatial aliasing artifacts. Pref the interpolater comprises a transversal filter of four taps which is responsive to received line information signals from a common range or depth or the interpolater may be adaptively responsive to motion to select samples for interpolation which would be spatially at the same range in the absence of motional effects.
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公开(公告)号：AT193380T
公开(公告)日：2000-06-15
申请号：AT94309910
申请日：1994-12-29
Applicant: ADVANCED TECH LAB
Inventor： ROBINSON BRENT STEPHEN , COOLEY CLIFFORD R , HWANG JUIN-JET , ENTREKIN ROBERT R
Abstract: The ultrasonic diagnostic imaging system scans an image region to receive a number of spatially arranged lines of ultrasonic image information signals. The ultrasonic line information signals are used in an interpolater to interpolate one or more lines which are spatially interlineated between each pair of spatially adjoining received lines. The interpolated lines are produced using either the received RF or demodulated IF ultrasonic image information signals. The interpolated lines are produced prior to scan conversion, and preferably prior to nonlinear processing such as detection or log compression to reduce spatial aliasing artifacts. Pref the interpolater comprises a transversal filter of four taps which is responsive to received line information signals from a common range or depth or the interpolater may be adaptively responsive to motion to select samples for interpolation which would be spatially at the same range in the absence of motional effects.
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公开(公告)号：DE3581552D1
公开(公告)日：1991-03-07
申请号：DE3581552
申请日：1985-04-01
Applicant: ADVANCED TECH LAB
Inventor： BLAKER DAVID M , HWANG JUIN-JET , ZOBKIW CHRISTOPHER P
IPC: A61B8/14 , A61B8/00 , G01N29/04 , G01N29/26 , G01S7/298 , G01S7/52 , G01S7/531 , G01S7/539 , G01S7/62 , G01S15/89 , G06F17/17 , G06T11/00 , G06F15/62
Abstract: An improved scan converter for converting received echo signals representative of the amplitude of ultrasound energy returning from sampled points along a plurality of spaced apart paths distributed in an image space into signals to be displayed as display pixels in a raster scan display system. The scan converter includes a scan data memory for storing the received echo signals in quadrants of the scan data memory. Each quadrant is associated with even and odd numbered paths and sample row combinations. Sample rows are related to sample points along the spaced apart paths. The scan converter further includes a circuit for determining a gray scale value to be assigned to each selected display pixel based on a predetermined combination of four received echo signals adjacent the selected display pixel and chosen from the quadrants of the scan data memory. The improved scan converter is capable of operation in both linear and sector scan modes, and, when in the sector mode, over 90 DEG and 180 DEG sectors. Variable scaling between the image space and display space and correction of the hose error when the scanning system employs an oscillating wobbler scan head are provided. Various techniques for converting display pixel rectangular coordinates into polar coordinates in real time for raster scan display are employed.
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公开(公告)号：DE3607262A1
公开(公告)日：1986-09-11
申请号：DE3607262
申请日：1986-03-05
Applicant: ADVANCED TECH LAB
Inventor： HWANG JUIN-JET , MCKEIGHAN RONALD EUGENE , JAEGER PAUL MICHAEL
Abstract: A circuit for controlling a patient exposure timer used to measure the time which a patient has been exposed to ultrasound energy is disclosed. The circuit operates by measuring a signal representative of whether an ultrasound transducer is coupled to air or to a patient. If the transducer is coupled to a patient, then the exposure timer is turned on. In the case of a mechanical scanhead, such as an oscillating scanhead or a rotating scanhead, the exposure timer control circuit can also be used to control the mechanical movement of the scanhead itself.
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