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公开(公告)号：US20190314001A1
公开(公告)日：2019-10-17
申请号：US16387259
申请日：2019-04-17
Applicant: California Institute of Technology
Inventor： David Maresca , Daniel P. Sawyer , Mikhail Shapiro
Abstract: Certain embodiments pertain to cross-amplitude modulation (xAM) ultrasound imaging methods and systems.
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公开(公告)号：US11350909B2
公开(公告)日：2022-06-07
申请号：US16387259
申请日：2019-04-17
Applicant: California Institute of Technology
Inventor： David Maresca , Daniel P. Sawyer , Mikhail Shapiro
Abstract: Certain embodiments pertain to cross-amplitude modulation (xAM) ultrasound imaging methods and systems configured to excite a first subaperture of transducer elements to transmit a first ultrasound plane wave, excite a second subaperture of transducer elements to transmit a second ultrasound plane wave noncollinear to the first ultrasound plane wave, the second ultrasound plane wave axisymmetric to the first ultrasound plane wave about a bisector, and simultaneously excite both first and second subapertures to transmit first and second ultrasound plane waves to cause an acoustic pressure above a threshold along the bisector.
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公开(公告)号：US11786218B2
公开(公告)日：2023-10-17
申请号：US16736581
申请日：2020-01-07
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Daniel P. Sawyer , Arash Farhadi , Avinoam D. Bar-Zion , Mikhail Shapiro
IPC: A61B8/08
CPC classification number: A61B8/5207 , A61B8/481 , A61B8/5246
Abstract: The application of a step function increase in acoustic pressure during ultrasound imaging using gas vesicle contrast, along with capturing successive frames of ultrasound imaging and extracting time-series vectors for pixels of the frames, allows for improved imaging down to even the cell level. Template vectors can be used to implement signal separation of the time-series vectors to improve detection.
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公开(公告)号：US11653899B2
公开(公告)日：2023-05-23
申请号：US16736581
申请日：2020-01-07
Applicant: CALIFORNIA INSTITUTE OF TECHNOLOGY
Inventor： Daniel P. Sawyer , Arash Farhadi , Avinoam D. Bar-Zion , Mikhail Shapiro
IPC: A61B8/08
CPC classification number: A61B8/5207 , A61B8/481 , A61B8/5246
Abstract: The application of a step function increase in acoustic pressure during ultrasound imaging using gas vesicle contrast, along with capturing successive frames of ultrasound imaging and extracting time-series vectors for pixels of the frames, allows for improved imaging down to even the cell level. Template vectors can be used to implement signal separation of the time-series vectors to improve detection.
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