Abstract:
The present invention generally relates to methods for assessing and treating dysfunctional vascular access sites, such as fistulas and grafts. According to certain aspects, methods of the invention include processing intraluminal image data of a vascular access site to characterize biological material present at the vascular access site, assessing the characterized biological material to identify a condition; and determining a therapeutic mode for treating the condition based on the assessment.
Abstract:
초음파 영상에 대한 설정치 조정 방법 및 장치를 개시한다. 초음파 영상과 관련된 영상 파라미터의 적용 또는 조정을 위한 인터페이스를 제공하여 한 번의 조작(단일 입력 신호)만으로 초음파 영상과 관련된 복수의 영상 파라미터(예컨대, 프레임 레이트(Frame-Rate), 이미지 퀄리티(Quality) 등)을 동시에 조정할 수 있는 초음파 영상에 대한 설정치 조정 방법 및 장치를 제공한다.
Abstract:
An imaging apparatus (100) includes at least one imaging probe and an occlusion avoidance processor and is configured for:using the at least one probe to form different imaging apertures;via multiple apertures, detecting imaging blockage; and deciding by the processor, based on a result of the detecting, upon one or more apertures to utilize for image acquisition. In a scouting mode, ultrasound patches (204) may be arranged in a checkerboard pattern to form odd apertures and even apertures that are interspersed for coherence estimation used in assessing blockage. A volumetric occlusion layer may be made by beam-wise projecting coherence values into a 2D map so that openings in the layer correspond to non-blockage in the map, or a connected segment thereof. An independent group (152, 156-158) of acquistion apertures can be pre-tested against the layer to find an optimal one or more acquisition apertures,and a scanning sequence,personalized to the anatomy (120) scouted. The layer can be incrementally updated over the course of a natural cycle of the body, for cyclical acquisition in accordance.
Abstract:
There are provided an ultrasonic imaging apparatus for imaging an ultrasonic signal and a method of controlling the same. A method of controlling an ultrasonic imaging apparatus according to an embodiment which uses a 2D array probe in which a plurality of elements are two-dimensionally arranged, the method includes setting an ultrasound to be transmitted using all of the plurality of elements and an echo ultrasound to be received using some predetermined elements among the plurality of elements, determining whether a section of interest of an object is included in a weak resolution region determined by the setting, and generating an ultrasound image of the section of interest according to a beamforming method corresponding to focusing of the transmitted ultrasound by transmitting the ultrasound and receiving the echo ultrasound in accordance with the setting when the section of interest is included in the weak resolution region.
Abstract:
Techniques, systems, and devices are disclosed for synthetic aperture ultrasound imaging using spread-spectrum, wide instantaneous band, coherent, coded waveforms. In one aspect, a method includes synthesizing a composite waveform formed of a plurality of individual orthogonal coded waveforms that are mutually orthogonal to each other, correspond to different frequency bands and including a unique frequency with a corresponding phase; transmitting an acoustic wave based on the composite waveform toward a target from one or more transmitting positions; and receiving at one or more receiving positions acoustic energy returned from at least part of the target corresponding to the transmitted acoustic waveforms, in which the transmitting and receiving positions each include one or both of spatial positions of an array of transducer elements relative to the target and beam phase center positions of the array, and the transmitted acoustic waveforms and the returned acoustic waveforms produce an enlarged effective aperture.
Abstract:
Various methods and systems are provided for ultrasonically scanning a tissue sample using a modular transducer system. In one example, a system for ultrasonically scanning a tissue sample comprises: an adjustable arm; a scanning assembly attached to the adjustable arm, the scanning assembly including a housing configured to remain stationary during scanning and a module receiver that is configured to translate with respect to the housing during scanning; and a transducer module comprising a transducer array of transducer elements, wherein the transducer module is configured to be removably coupled with the module receiver in order to establish both a mechanical connection and an electrical connection between the module receiver and the transducer module.
Abstract:
Ultrasound devices and methods are described, including a repeatable ultrasound transducer probe having ultrasonic transducers and corresponding circuitry. The repeatable ultrasound transducer probe may be used individually or coupled with other instances of the repeatable ultrasound transducer probe to create a desired ultrasound device. The ultrasound devices may optionally be connected to various types of external devices to provide additional processing and image rendering functionality.