公开(公告)号：AU5390798A

公开(公告)日：1998-08-20

申请号：AU5390798

申请日：1998-02-12

Applicant: ADVANCED TECH LAB ,  ATLANTIS DIAGNOSTICS INTERNATI

Inventor： DAIGLE RONALD E ,  ROBINSON BRENT STEPHEN ,  COOLEY CLIFFORD R

IPC: A61B8/00 ,  G01S7/52 ,  G06T1/00 ,  G06T5/00 ,  A61B8/13

Abstract: A method and apparatus are provided for interpolating image lines from ultrasonically obtained scanlines of an image region. The interpolated lines are preferably formed one-quarter and three-quarters of the distance between each pair of received scanlines by combining weighted samples of the adjacent scanlines in proportion to their distances from the interpolated lines. The received scanlines are preferably formed by a beamformer which samples the received lines at quadrature phases of the scanhead center frequency and filters the samples by combining successive samples of a related phase. The image lines are scan converted by computing a grid of weighted values between each pair of image lines, and using the closest value for each pixel in the ultrasound image.

公开(公告)号：NO982446D0

公开(公告)日：1998-05-28

申请号：NO982446

申请日：1998-05-28

Applicant: ADVANCED TECH LAB

Inventor： PEDERSEN ROBERT H ,  PESQUE PATRICK RENU

IPC: A61B8/06 ,  A61B8/08 ,  G01S7/52 ,  G01S15/89 ,  G06T1/00 ,  A61B

公开(公告)号：AT164685T

公开(公告)日：1998-04-15

申请号：AT93304234

申请日：1993-06-01

Applicant: ADVANCED TECH LAB

Inventor： ROUTH HELEN FRANCES ,  PETERSON ROY BECK ,  POWRIE CHARLES WESLEY JR

IPC: A61B8/06 ,  G01P5/00 ,  G01S7/52 ,  G01S15/58 ,  G01S15/50

Abstract: A technique for continuously determining and displaying the peak and mean velocities of spectral Doppler information is disclosed. Received spectral Doppler data is examined over a predetermined period to determine the signal to noise ratio of the Doppler signals. Individual instantaneous measurements, or lines, of Doppler spectral information are analyzed in the power versus frequency domain to compare the line information against a noise threshold determined by the signal to noise ratio. The maximum frequency signal component is thereby identified as the peak velocity of the spectral line. Mean velocity is calculated as an intensity weighted mean about the maximum power frequency of the line data. The identified peak and mean velocities are displayed in contrasting colors or shades on a continuously updated and displayed flow velocity versus time spectral display.

公开(公告)号：NO981475D0

公开(公告)日：1998-04-01

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 ,  A61B8/06 ,  G01N29/22 ,  A61B8/14 ,  G01N29/06 ,  G01S7/52 ,  G01S7/521 ,  G01S15/00 ,  G01S15/89 ,  G10K11/00 ,  G10K11/34 ,  A61B ,  G10K

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).

公开(公告)号：NO974389L

公开(公告)日：1998-03-26

申请号：NO974389

申请日：1997-09-23

Applicant: ADVANCED TECH LAB ,  ATLANTIS DIAGNOSTICS INTERNATI

Inventor： WOOD MICHAEL A ,  RONCALEZ PASCAL ,  PFLUGRATH LAUREN S ,  SOUQUET JACQUES

IPC: A61B5/00 ,  A61B8/00 ,  G01S7/00 ,  G01S7/52 ,  G01S15/89 ,  G06F19/00

Abstract: A medical ultrasonic diagnostic imaging system is provided which is capable of being accessed over data communication networks such as the Internet, making the ultrasonic images, diagnostic reports, and ultrasound system diagnostics information and operation accessible to a conventional personal computer using commercially available software at virtually any remote location. In one embodiment, the ultrasound system can be remotely operated from the personal computer. The inventive apparatus and techniques make it possible for physicians to remotely access, control, and perform diagnoses using their ultrasound systems over a network such as the World Wide Web with no special hardware requirements.

公开(公告)号：CA2216123A1

公开(公告)日：1998-03-25

申请号：CA2216123

申请日：1997-09-23

Applicant: ADVANCED TECH LAB ,  ATLANTIS DIAGNOSTICS INTERNATI

Inventor： SOUQUET JACQUES ,  WOOD MICHAEL A ,  PFLUGRATH LAUREN S ,  RONCALEZ PASCAL

IPC: A61B5/00 ,  A61B8/00 ,  G01S7/00 ,  G01S7/52 ,  G01S15/89 ,  G06F19/00 ,  A61B8/13 ,  H04L12/16 ,  G06F17/60

Abstract: A medical ultrasonic diagnostic imaging system is provided which is capable of being accessed over data communication networks such as the Internet, making the ultrasonic images, diagnostic reports, and ultrasound system diagnostics information and operation accessible to a conventional personal computer using commercially available software at virtually any remote location. In one embodiment, the ultrasound system can be remotely operated from the personal computer. The inventive apparatus and techniques make it possible for physicians to remotely access, control, and perform diagnoses using their ultrasound systems over a network such as the World Wide Web with no special hardware requirements.

公开(公告)号：DE69127310D1

公开(公告)日：1997-09-25

申请号：DE69127310

申请日：1991-04-17

Applicant: ADVANCED TECH LAB

Inventor： POWERS JEFFRY E

IPC: A61B8/00 ,  A61B8/08 ,  A61B8/14 ,  A61B17/22 ,  A61B17/34

Abstract: A system for imaging a biopsy needle with ultrasound is shown in which the needle tip elicits a Doppler response through controlled reciprocation of the needle tip. In a preferred embodiment the biopsy needle includes a hollow cannula (40) which carries a removable stylet. Means for reciprocating (44) the stylet is coupled to the proximal end of the stylet, and the distal tip of the stylet is reciprocated at the distal end of the cannula. This motion is detected through Doppler interrogation of the body region at which the biopsy is to be performed, and the Doppler response of the needle tip in the image of the body region allows the needle tip to be monitored as it approaches the tissue to be biopsied.

公开(公告)号：NO974389D0

公开(公告)日：1997-09-23

申请号：NO974389

申请日：1997-09-23

Applicant: ADVANCED TECH LAB ,  ATLANTIS DIAGNOSTICS INTERNATI

Inventor： WOOD MICHAEL A ,  RONCALEZ PASCAL ,  PFLUGRATH LAUREN S ,  SOUQUET JACQUES

IPC: A61B5/00 ,  A61B8/00 ,  G01S7/00 ,  G01S7/52 ,  G01S15/89 ,  G06F19/00 ,  A61B

Abstract: A medical ultrasonic diagnostic imaging system is provided which is capable of being accessed over data communication networks such as the Internet, making the ultrasonic images, diagnostic reports, and ultrasound system diagnostics information and operation accessible to a conventional personal computer using commercially available software at virtually any remote location. In one embodiment, the ultrasound system can be remotely operated from the personal computer. The inventive apparatus and techniques make it possible for physicians to remotely access, control, and perform diagnoses using their ultrasound systems over a network such as the World Wide Web with no special hardware requirements.

公开(公告)号：NO971314L

公开(公告)日：1997-09-23

申请号：NO971314

申请日：1997-03-20

Applicant: ADVANCED TECH LAB

Inventor： SCHWARTZ GARY ALLEN

IPC: A61B8/06 ,  G01S15/89 ,  A61B8/14

Abstract: 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 dimensional rendering processes the B mode and Doppler flow information as a function of the spatial location of B mode and Doppler pixels in the volumetric region. The rendering utilizes separate three dimensional rendering parameters for the tissue and flow information, respectively.

公开(公告)号：DE69118645T2

公开(公告)日：1996-11-28

申请号：DE69118645

申请日：1991-10-11

Applicant: ADVANCED TECH LAB

Inventor： PETERSON ROY BECK ,  POWERS JEFFRY E

IPC: A61B8/06 ,  G01F1/66 ,  G01P5/00 ,  G01P5/24 ,  G01S15/52 ,  G01S15/58 ,  G01S15/89

Abstract: 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. Doppler information signals are discriminated to determine the presence of signal components resulting from moving tissue, which signal components are located at frequencies of a Doppler spectrum other than the predetermined frequency location of stationary tissue signals. The tissue motion signal components present are shifted to the predetermined frequency location and removed by high pass filtering the Doppler signals. The remaining signals are then shifted back to their original frequency location and transmitted to a Doppler velocity estimator for further processing of the fluid flow velocity information and ultimate display of the information. To overcome problems of Doppler frequency inaccuracies at discrete spatial positions, the Doppler signals from a plurality of neighbouring spatial locations are examined in the aggregate to determine the frequency location of tissue motion signal components.