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公开(公告)号：AT162701T
公开(公告)日：1998-02-15
申请号：AT91310726
申请日：1991-11-21
Applicant: ADVANCED TECH LAB
Inventor： KELLER PHILIP , AUGUSTINE LARRY J , DAIGLE RONALD E
Abstract: An ultrasonic imaging system is disclosed which produces a sequence of images of planes of a subject including both image and spatial positional information of the image plane. In one embodiment the positional information is developed from a plurality of accelerometers located within a scanhead. The second integrals of the acceleration signals are used to determine positional information of the image plane. In a second embodiment a tranmitter transmits a magnetic field and a receiver attached to the scanhead detects the position of the scanhead in relation to the transmitted magnetic field. Spatially related images are displayed by displaying one image plane in the plane of the display and a second image plane projected in relation thereto. Either of the displayed planes may be displayed in outline form, and the outline may be modulated to depict depth.
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公开(公告)号：DE69127310T2
公开(公告)日：1998-01-22
申请号：DE69127310
申请日：1991-04-17
Applicant: ADVANCED TECH LAB
Inventor： POWERS JEFFRY E
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.
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公开(公告)号：NO971314D0
公开(公告)日：1997-03-20
申请号：NO971314
申请日：1997-03-20
Applicant: ADVANCED TECH LAB
Inventor： SCHWARTZ GARY ALLEN
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.
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公开(公告)号：NO971106D0
公开(公告)日：1997-03-11
申请号：NO971106
申请日：1997-03-11
Applicant: ADVANCED TECH LAB
Inventor： PESQUE PATRICK RENE , QUISTGAARD JENS ULRICH , SCHWARTZ GARY ALLEN
Abstract: An ultrasonic diagnostic imaging system is provided which utilizes a multivariate processor to discriminate between Doppler power signals which were produced by moving tissue, and Doppler power signals which were produced by fluid flow. Discriminated moving tissue Doppler power signals are displayed in a three dimensional spatial presentation.
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公开(公告)号：DE69116318T2
公开(公告)日：1996-07-11
申请号：DE69116318
申请日：1991-11-13
Applicant: ADVANCED TECH LAB
Inventor： OAKS FRANK BENTLEY , KAMINSKI PERRY W , LARSON EUGENE A
Abstract: An ultrasonic transesophageal scanhead is provided which enables a physician to easily and quickly change the orientation of the image plane during a scanning procedure without disrupting control of the scanhead. Means (36) are provided on the external control unit (16) of the scanhead for unambiguously selecting the orientation of the plane which is imaged by the transducers (E1L..E48T) at the end of the probe (12) of the scanhead. In one embodiment, a rocker switch (36) is provided on the underside of the control unit, and a lighted indicator (40) is provided on top of the control unit. When the physician desires to change the image plane, the rocker switch is rolled forward to select the transducer elements (E1L..E48L; E1T..E48T) of the probe which are configured for scanning in the desired image plane. As the rocker switch is moved, the lighted indicator (40) on the top of the control unit provides a visual display pattern aligned either longitudinally (40b, 40c) or transversely (40a, 40b) with respect to the axis of the probe. Thus, the physician can change scanning planes without moving his hand from the control unit, and the unit constantly provides an indication of the orientation of the selected plane.
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Patent Agency Ranking
公开(公告)号：AT136755T
公开(公告)日：1996-05-15
申请号：AT91310445
申请日：1991-11-13
Applicant: ADVANCED TECH LAB
Inventor： NELSON KIP ROBERT , FIDEL HOWARD , AINDOW JOSEPH D , NICHOLAS
Abstract: An ultrasonic imaging system for guiding a user in the placement of a medical instrument (10) within the body is described. As the medical instrument (10) approaches the image plane of an imaging transducer (14), ultrasonic wave energy (18) is received by a transducer (22) located on the medical instrument. The level of received energy is detected and used to develop a control signal which varies as a function of the quantum of received energy. The control signal is used to modulate an audible indicator (90), which provides an audible indiction of proximity of the medical instrument to the image plane as the instrument approaches and intersects the plane. A visual marker is produced on an image display (16) which represents the location of the instrument within the body. As the instrument approaches and intersects the image plane the visual marker is also modulated. The system includes a test and calibration mode of operation, which exercises components of the medical instrument transducer signal processor (12), and also transmits calibration signals to the image display for calibration and verification purposes prior to the commencement of a medical procedure.
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公开(公告)号：DE3676755D1
公开(公告)日：1991-02-14
申请号：DE3676755
申请日：1986-05-28
Applicant: ADVANCED TECH LAB
Inventor： DESJARDINS PHILIP A , POWERS JEFFRY E
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公开(公告)号：CA1262276A
公开(公告)日：1989-10-10
申请号：CA509991
申请日：1986-05-26
Applicant: ADVANCED TECH LAB
Inventor： DESJARDINS PHILIP A , POWERS JEFFRY E
Abstract: RANGE-CONTINUITY ANTI-ALIASING A Doppler blood velocity measuring device is described which includes anti-aliasing circuitry. The anti-aliasing circuitry is based upon the use of a multigate Doppler unit which receives Doppler shift frequency information from various depth ranges. Thereafter, the Doppler frequencies received are corrected by adding a correction frequency to the perceived Doppler frequency with the correction frequency selected based on the assumption that blood flow velocity cannot change drastically between adjacent depths.
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公开(公告)号：AT45080T
公开(公告)日：1989-08-15
申请号：AT83302683
申请日：1983-05-11
Applicant: ADVANCED TECH LAB
Inventor： SILVERSTEIN FRED ELI , GIULIANI DAVID
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