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| Number | Title | Issue Date |
| 4383447 | Ultrasonic equipment for examinations using section displays Focussing sound transducer head comprise at least one focussing sound transducer head for transmitting ultrasonic pulses to form a focussed sound beam having a relatively constricted depth zone, in which the sound beam is narrower than a sound beam that w... | 05/17/1983 |
| 4376491 | Flexible membrane container closure A container closure comprising a cylindrically shaped, resilient, distortable membrane having a first terminal end fully affixed to the periphery of a first closure body providing a discharge aperture of predetermined size and a second terminal end fully ... | 03/15/1983 |
| 4372323 | Ultrasonic diagnosing apparatus An electronic linear scan mode and an electronic sector scan mode are selectively used individually or in combination under the control of a mode selection means provided for determining a scan mode for an ultrasonic probe consisting of a plurality of ult... | 02/08/1983 |
| 4368643 | Ultrasonic imaging by radial scan beams emanating from a hypothetical point located behind linear transducer array An ultrasonic imaging system includes a linear array of transducers of which a group of successively arranged transducers is selected and successively shifted to the next by at least one transducer. The transducers of the selected group are successively a... | 01/18/1983 |
| 4359767 | Ultrasonic array In an exemplary embodiment, the transducer elements are arranged in rows and columns, the transducer elements bein contacted at both sides by oppositely disposed contact surfaces, and switches being associated with the contacts of the one contact surface ... | 11/16/1982 |
| 4351038 | Ultrasonic examination and imaging An ultrasonic imaging device comprises transducers distributed along a line and operable at a frequency f. A generator delivers electrical pulses to time delay means which provide, in response to each electrical pulse, a plurality of low level pulses dela... | 09/21/1982 |
| 4348902 | Ultrasonic imaging system using plural square wave pulse trains of successively delayed intervals A sector scan ultrasonic imaging system comprises a source of a plurality of square wave pulse trains each being delayed by a unit quantization time with respect to adjacent trains, and a plurality of transmitter circuits corresponding to the elements of ... | 09/14/1982 |
| 4344327 | Electronic scanning ultrasonic diagnostic system An electronic scanning ultrasonic diagnostic system comprising a probe having ultrasonic beam emitting surface, in which plural ultrasonic wave transducers are convexly arranged at equal distances, emitting desired sector scanning ultrasonic beams, a tran... | 08/17/1982 |
| 4332171 | Ultrasonic diagnosis apparatus An ultrasonic diagnosis apparatus is provided with a plurality of phased array transducer elements arranged in a row. The number of simultaneously driven transducer elements is changed in response to a rate pulse to increase the ultrasonic scanning line d... | 06/01/1982 |
| 4330875 | Focusing circuit for ultrasound imaging system A focusing circuit for focusing an array of transducers of an ultrasound imaging system includes a variable delay line comprising a plurality of summing amplifiers and a plurality of variable delay elements provided between successive summing amplifiers. ... | 05/18/1982 |
| 4328707 | Ultrasonic image reconstruction methods and apparatus Reconstruction of two-dimensional distribution of attenuation coefficients or sound velocities in a cross-sectional plane of an object is achieved by carrying out a plurality of measurements of absorption or of flight time with ultrasound bursts directed ... | 05/11/1982 |
| 4325257 | Real-time digital, synthetic-focus, acoustic imaging system The invention involves a digital synthetic-focus, acoustic imaging system which is operative in real time and includes one or more electro-acoustic transducers arranged to receive broadband pulses from a pulse generator for excitation of acoustic pulses w... | 04/20/1982 |
| 4324140 | Electronically simulated rotating prism for ultrasonic beam scanning A method and apparatus are described for electronically scanning a spherily focused beam in a c-scan mode using a spiral path rather than a traditional raster scan pattern. Essential to the technique is an electronically simulated rotating ultrasonic pri... | 04/13/1982 |
| 4324142 | Circuit for processing the signals received by a mosaic of ultrasonic transducers in B-mode echography A processing circuit is connected to the output of a mosaic which consists of n first electrodes on a first principal surface of a TGS plate and 2p second electrodes on the second principal surface thereof. The circuit is constructed so that the output co... | 04/13/1982 |
| 4320660 | Fresnel focussed imaging system An imaging system, particularly useful for acoustic medical diagonsis of a human subject, utilizes an array of radiating elements or sonic transducers located side-by-side and positioned along the subject. Signals received by the transducer are applied to... | 03/23/1982 |
| 4319489 | Ultrasonic diagnostic method and apparatus An ultrasonic diagnostic method and apparatus are provided for probing the condition in a tissue of a living body by projecting an ultrasonic beam onto the living body from a vibrator array transducer probe consisting of a plurality of tiny ultrasonic vib... | 03/16/1982 |
| 4310907 | Scan converter for a sector scan type ultrasound imaging system A scan converter is disclosed for use in a sector scan type ultrasound imaging system in which ultrasound echo signals return from targets along a plurality of radial scan lines distributed in a sector field with a substantially equal tangential angular i... | 01/12/1982 |
| 4307613 | Electronically focused ultrasonic transmitter An array of transducer segments is arranged in columns, each of which has a multiplicity of segments. The segments are wired to permit excitation by one or the other of two opposite phases of high-frequency signal, and groups of segments can be excited wi... | 12/29/1981 |
| 4305296 | Ultrasonic imaging method and apparatus with electronic beam focusing and scanning Method and apparatus for pulsed ultrasonic imaging of a section of the interior of an object from reflections by internal discontinuities of recurrent transmitted pulses of ultrasonic energy, are provided. There is included a transducer array comprising a... | 12/15/1981 |
| 4290310 | Ultrasonic imaging system using digital control A real-time ultrasonic imaging system is disclosed which includes an array of transducers adapted for propagating ultrasonic energy into a body to be ultrasonically examined and for receiving reradiated energy from points within the body. A plurality of s... | 09/22/1981 |
| 4287768 | Beam deflection method and apparatus for sector scan ultrasound imaging systems Beam deflection delay time data of (L×M) data bits are stored in a read-only memory from which each datum is retrieved successively when the ultrasound beam is deflected to a given angle and repeatedly accumulated in a digital adder through a latching ci... | 09/08/1981 |
| 4285011 | Apparatus for producing an image of an object scanned by ultrasonic wave beams Delay controllers are provided to delay pulses supplied to a plurality of electro-acoustic transducers. Each controller comprises a delay line provided with a plurality of taps and a switch for selectively changing the taps. There are further provided a m... | 08/18/1981 |
| 4285010 | Ultrasonic interrogating system and exciter-detector circuit therefor In order to obviate the necessity for providing a complete channel of electronics for each transducer of an array incorporated into a real-time ultrasonic imaging system, all system transducers are disposed in apparent series with a single inductor as to ... | 08/18/1981 |
| 4281549 | Equipment for displaying section images of objects subjected to ultrasonic examination Equipment is disclosed which serves to trace B-scan section displays of specimens and comprises a sound transducer head, which is oscillated by a scanning mechanism and projects sound beams, which scan the section to be displayed. The echoes which origina... | 08/04/1981 |
| 4281550 | Curved array of sequenced ultrasound transducers An array of ultrasound transducers for pulsed sector-scan operation includes a plurality of transducer elements disposed on an arc of a circle and oriented to emit and receive ultrasound radiation in the direction of the center of the arc. A group of adja... | 08/04/1981 |
| 4279157 | Method of and device for determining the internal structure of a body by means of acoustic beams A method and device for determining the internal structure of a body by means of acoustic beams. Transit times and intensities of acoustic beams passing through the body in different spatial directions are measured to establish the refractive index distri... | 07/21/1981 |
| 4276779 | Dynamically focussed array An array of sonic transducers, useful for medical ultrasonic imaging, has individual sections thereof separately coupled for forming separate beams of sonic energy which converge, respectively, to separate foci along a common axis of the beams. The ratio ... | 07/07/1981 |
| 4267584 | Permutating analog shift register variable delay system A dynamically variable electronic delay line for real time ultrasonic imaging systems is disclosed which controllably phases the signals associated with an array of electromechanical transducer elements and thereby enables selective scanning and dynamic f... | 05/12/1981 |
| 4258575 | Ultrasonic imaging apparatus operating according to the impulse-echo method An exemplary embodiment comprises an ultrasonic applicator for line-by-line ultrasonic scanning and a picture tube, for example, a television monitor for the visible echo image. The echo lines developing from the ultrasonic applicator are alternately stor... | 03/31/1981 |
| 4257256 | Ultrasonic cross-sectional imaging apparatus An ultrasonic cross-sectional imaging apparatus comprising an ultrasonic probe, memory means and display means. The probe emits ultrasonic waves in non-interlaced fashion and receives echo data in non-interlaced fashion. The non-interlaced echo data are w... | 03/24/1981 |
| 4257271 | Selectable delay system A selectable delay system for coupling between a plurality of elements and an input/output terminal, the relative delays between the input/output terminal and the individual elements being selectable under operator control. A single delay line is employed... | 03/24/1981 |
| 4254662 | Multiple acoustic beamformer step scanner In an ultrasonic imaging system including an array of ultrasonic oscillators, ultrasonic beams are electronically scanned by sequentially selecting a plurality of oscillator sets for beam transmission and reception. For one transmission of ultrasonic wave... | 03/10/1981 |
| 4253338 | Ultrasonic diagnostic equipment An ultrasonic diagnostic equipment of linear electric scanning type includes a plurality of pulse generators for supplying electric pulses to a plurality of ultrasonic transducers disposed on a plane, gate circuits for driving the pulse generator, a plura... | 03/03/1981 |
| 4252026 | Multiple line of sight ultrasonic apparatus An apparatus for pulse-echo ultrasonic examination, particularly in medical diagnostic examination comprised of one or more transducer elements for transmitting divergent pulses of ultrasonic energy into the object under examination and a greater number o... | 02/24/1981 |
| 4252024 | Flaw detection, characterization and study Echo ranging flaw detecting, characterizing and studying apparatus in which the work is scanned simultaneously by acoustic energy focused at a point from an acoustic-lens transducer and by acoustic energy focused along a line along which it is propagated ... | 02/24/1981 |
| 4252025 | Ultrasonic diagnostic apparatus Apparatus for the ultrasonic examination of an object comprises: means for transmitting pulses of ultrasonic energy along a plurality of beams into the object and receiving echoes of the pulses reflected along the beams by acoustic impedance discontinuities wi... | 02/24/1981 |
| 4250894 | Instrument for viscoelastic measurement An instrument for viscoelastic measurement, particularly for breast palpation, uses a plurality of spaced elongated electret strips which are pressed into the body being examined by a pressure member which applies a given periodic or steady stress to the ... | 02/17/1981 |
| 4242913 | Acoustic variable focal length lens assembly A lens assembly exhibiting a certain fixed relative aperture is comprised of a physical acoustic lens having a given physical aperture and a fixed relatively short focal length serially spaced from an electronic acoustic lens having any selected one of a ... | 01/06/1981 |
| 4242911 | Ultrasonic medical diagnostic apparatus and method The non-invasive testing of soft body tissue is accomplished with the use of a beam of ultrasonic energy which may be focused at varying depths in a patient. The energy content of the ultrasound beam is varied as a function of depth of focus to thereby em... | 01/06/1981 |
| 4242912 | Method and apparatus for producing cross-sectional images using ultrasound A method for producing cross-sectional images using an ultrasonic imaging unit operating on the pulse-echo principle, which unit includes a transducer system having a stationary elongated array of adjacent transducer elements with transverse electrode seg... | 01/06/1981 |
