Abstract:
자동으로 초음파 영상의 취득 범위를 조절하는 초음파 트랜스듀서 및 초음파 의료영상 장치가 제공된다. 초음파 트랜스듀서는 일직선으로 이송되며 3차원 영상의 구성에 필요한 단면 영상을 연속적으로 생성하며, 상기 초음파 트랜스듀서는 다수의 압전 소자(piezoelectric element)로 구성된 배열 소자 및 상기 배열 소자를 일직선으로 이송시키는 이송부를 포함하고. 상기 초음파 트랜스듀서는 검사대상 물체의 윤곽을 파악하여 상기 단면 영상의 취득 범위를 결정한다.
Abstract:
횡파를 이용하여 탄성 영상을 생성하는 방법 및 장치에 관한 것으로, 이미징펄스를 피사체에 송수신하여 레퍼런스 프레임을 획득하고, 변조된 푸싱펄스를 피사체에 가함으로써 횡파를 생성하고, 생성된 횡파에 의해 피사체 내부에서 발생하는 상기 횡파의 변위 신호를 검출하고, 변조된 푸싱펄스에 따라 결정되는 정합필터를 이용하여 변위 신호를 필터링하며, 필터링된 변위 신호를 이용하여 영상을 생성함으로써, 탄성 영상의 화질을 향상시킬 수 있다.
Abstract:
Disclosed is a technology related to a synthetic aperture beamforming method and apparatus for interpolating a time delay. The synthetic aperture beamforming method according to an embodiment receives multiple channel data included in a supersonic signal which is focused to an object, transmitted and reflected; uses the channel data as sub-aperture to generate partial beams focused by differentiating the time delay of each channel data by the channel; and synthesizes the generated partial beams to generate a synthesized beam of the scan line unit, wherein a representative partial beam among the partial beams is generated by calculating a delay time value of the channel data at every regular interval; interpolated partial beams except the representative partial beam among the partial beams are generated by using a value interpolated from the delay time value of an adjacent representative delay time; and the synthesized beam of the scan line unit is generated by synthesizing the representative beam and the interpolated partial beams.
Abstract:
본 발명은 평면파를 이용한 기능성 혈류 영상 생성 장치에 관한 것으로서 평면파를 대상체로 송신하고, 대상체에서 반사된 초음파 신호를 수신하는 트랜스듀서; 초음파 신호를 수신 시간 지연을 적용하여 빔 집속하는 수신 빔 집속부; 빔 집속된 신호로부터 동상 성분 및 이상 성분을 생성하는 직각 복조부; 동상 성분 및 이상 성분으로부터 2차원 단면상의 영상점에서의 혈류 속도를 계산하는 속도 계산부; 혈류 속도를 영상점에 맵핑하는 맵핑부; 및 영상점에 맵핑된 혈류 속도를 디스플레이하는 디스플레이부를 포함하는 것을 특징으로 하며, 혈류 정보 분석의 정확도를 높이기 위해 많은 샘플 수를 확보하고, 혈류 특성 지표를 이용하여 적은 시간을 소요하면서도 2차원 단면상에서 칼라 영상을 보여줄 수 있다.
Abstract:
PURPOSE: A method for generating a functional blood flow image by using plane waves and a device thereof are provided to estimate a cardiac cycle by using only an imaged signal without an electrocardiogram signal, thereby improving the accuracy of a diagnosis. CONSTITUTION: A transducer (220) transmits a plane wave to an object and receives an ultrasonic signal reflected from the object. A receiving beam collection unit (230) collects beams by applying a receiving time delay to the ultrasonic signal. An orthogonal demodulation unit (250) generates an in-phase component and a quadrature component from signals including the beams. A speed calculation unit (263) calculates blood flow speed at an image point of a 2D image. A mapping unit (280) maps the blood flow speed to the image point. A display unit displays the blood flow speed. [Reference numerals] (210) Pulsar; (220) Transducer; (230) Receiving beam collection unit; (240) DC removing filter unit; (250) Orthogonal demodulation unit; (261) Clitter filtering unit; (262) Doppler frequency estimating unit; (263) Speed calculation unit; (264) Dispersion calculation unit; (271) Data buffer unit; (272) Envelope detection unit; (273) Lowpass filter; (274) Cardiac cycle detection unit; (275) Maximum/minimum value detection unit; (276) Indicator calculation unit; (280) Mapping unit; (290) Display unit
Abstract:
피사체를 진단하는 진단시스템, 피사체에 대한 진단영상을 제공하는 의료영상시스템 및 피사체에 대한 진단영상을 표시하는 방법에 따르면, 피사체를 진단하는 진단시스템은 프로브 및 아날로그 빔포밍과 디지털 빔포밍을 수행하는 하이브리드 빔포머(hybrid beamformer)를 포함한다.
Abstract:
PURPOSE: A method and a device of generating an ultrasound image and a photoacoustic image are provided to obtain an image with improved spatial resolution, contrast, and a low noise level for the ultrasound image and the photoacoustic image by estimating an optimal ultrasound speed to be used for image restoration. CONSTITUTION: A method of generating an ultrasound image and a photoacoustic image includes a step of emitting a laser pulse to a target (200); a step of generating the photoacoustic image by receiving an ultrasound signal when the target absorbs the emitted laser pulse, and the ultrasound signal is generated (210); a step of estimating an optimal ultrasound speed from the generated photoacoustic image (220); a step of emitting an ultrasound pulse to the target (230); a step of performing beam convergence and orthogonal demodulation for the received ultrasound signal from the target by using the estimated optimal ultrasound speed (240); and a step of generating the ultrasound image by using an orthogonal demodulation performing result (250). [Reference numerals] (200) Emit a laser pulse to a target; (210) Generate a photoacoustic image by receiving an ultrasound signal when the target absorbs the emitted laser pulse, and the ultrasound signal is generated; (220) Estimate an optimal ultrasound speed from the generated photoacoustic image; (230) Emit an ultrasound pulse to the target; (240) Perform beam convergence and orthogonal demodulation for the received ultrasound signal from the target by using the estimated optimal ultrasound speed; (250) Generate an ultrasound image by using an orthogonal demodulation performing result; (260) Generate a fusion image by using the photoacoustic image and the ultrasound image; (AA) Start; (BB) End
Abstract:
PURPOSE: A device and a method for performing analog beamforming are provided to reduce a memory, the operation quantity of a system, and the number of hardware devices for transmitting ultrasonic signals. CONSTITUTION: A device for performing analog beamforming comprises a delay control part(707) outputting first control information showing delay times of first unit time and second control information showing delay times of second unit time about an ultrasonic signal at a position within a predetermined scan area; a first analog device which delays or passes a received ultrasonic signal based on the first delay control information for the first unit time; a second analog device which delays or passes an ultrasonic signal which is delayed or is passed based on the second delay control information for the second unit time; and a combiner(704) adding up ultrasonic signals postponed by the second analog device. [Reference numerals] (701) One dimension transducer arrangement; (702) Switching part; (703) Receiving signal delaying part; (704) Analog combiner part; (705) Switching control part; (706) Control part; (707) Delay control part; (708) Clock generation part; (709) AD converter; (710) Digital beam forming part; (711) Residue signal removal part; (AA) Input scan start command; (BB) Image information