Acoustic signal transmission connection and connection medium
An acoustic signal and acoustic technology, applied in the fields of acoustic wave diagnosis, medical science, infrasound wave diagnosis, etc., can solve the problems of insufficient spatial resolution and less than ideal image quality.
Active Publication Date: 2021-02-02
DECISION SCI MEDICAL CO LLC
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Problems solved by technology
Several factors, including insufficient spatial resolution and tissue differentiation, may result in suboptimal image quality using conventional ultrasound imaging techniques, which may limit their use in many clinical indications or applications
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[0030] Acoustic imaging can be performed by transmitting an acoustic waveform (eg, pulse) within a physically elastic medium, such as a biological medium including tissue. An acoustic waveform is transmitted from a transducer element (eg, an array of transducer elements) towards a volume of interest (VOI). Propagating an acoustic waveform towards a target volume in a medium may encounter structures that cause the acoustic waveform to be partially reflected and partially transmitted from a boundary between two media (eg, different biological tissue structures). The reflection of the transmitted acoustic waveform may depend on the difference in acoustic impedance between the two media (eg, at the interface between two different biological tissue types). For example, some of the acoustic energy of the transmitted acoustic waveform can scatter back to the transducer at the interface to be received and processed to extract information, while the rest can travel on and on to the nex...
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Apparatuses, systems, and methods for use in tomographic ultrasound imaging, large aperture ultrasound imaging, and therapeutic ultrasound are disclosed that provide coupling of ultrasound signal transducers to body structures for transmitting and receiving ultrasound signals. The acoustic signal transmission coupling can conform to the subject's receiving medium (eg, skin) such that there is an acoustic impedance match between the receiving medium and the transducer. In one aspect, the ultrasound coupling medium comprises a hydrogel comprising a polymerizable material forming a network configured to entrap an aqueous fluid within the interior of the hydrogel. The hydrogel is configured to conform to the receiver, and the acoustic coupling medium is operable to conduct an acoustic signal between the acoustic signal transducer element and the receiving medium when the hydrogel is in contact with the receiver, such that a gap between the receiving medium and the acoustic signal There is an acoustic impedance match between the transducer elements.
Description
[0001] Cross References to Related Applications [0002] This patent document claims priority to US Provisional Patent Application No. 62 / 120,839, filed February 25, 2015, and US Provisional Patent Application No. 62 / 174,999, filed June 12, 2015. The entire contents of the aforementioned patent applications are incorporated by reference as part of the disclosure of this document. technical field [0003] This patent document relates to systems, devices, processes for acoustic energy diagnosis and therapy. Background technique [0004] Acoustic imaging is an imaging modality that uses the properties of sound waves traveling through a medium to render a visual image. High-frequency acoustic imaging has been used for decades as an imaging modality in various biomedical fields to observe internal structure and function in animals and humans. High-frequency sound waves used in biomedical imaging can operate at different frequencies, for example, between 1 and 20 MHz, or even hi...
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IPC IPC(8): A61B8/00
CPCA61N7/00G01S15/892G01S15/8922G01S7/52079A61B8/14A61B8/4209A61B8/4477A61B17/2251A61B2017/2253A61B8/4281A61B8/4483A61B8/0808A61B8/467A61N2007/0078A61B8/44
Inventor E.弗赖伯格D.克鲁斯
Owner DECISION SCI MEDICAL CO LLC