ELECTROMAGNET GRADIENT COIL APPARATUS FOR MICRO-DEVICE LOCALIZATION

    公开(公告)号:US20210141034A1

    公开(公告)日:2021-05-13

    申请号:US17097349

    申请日:2020-11-13

    Abstract: An apparatus for producing magnetic field gradients includes (a) a first planar electromagnet coil set configured to produce a first magnetic field gradient with respect to a first axis, (b) a second planar electromagnet coil set configured to produce a second magnetic field gradient with respect to a second axis that is orthogonal to the first axis, (c) a third planar electromagnet coil set configured to produce a third magnetic field gradient with respect to a third axis that is orthogonal to the first and second axes, and (d) a controller configured to selectively provide power to the first, second, and/or third electromagnet coil sets to sequentially produce a localization magnetic field gradient with respect to each of the first, second, and third axes, at least a portion of each localization magnetic field gradient having a monotonically-varying magnetic field magnitude along a respective axis.

    Compositions, methods and systems for gas vesicle based cavitation

    公开(公告)号:US11446523B2

    公开(公告)日:2022-09-20

    申请号:US16833637

    申请日:2020-03-29

    Abstract: The system and process of therapeutic and effective cavitation by using ultrasound to collapse gas vesicles as well as cavitate the bubbles produced from the collapsed gas vesicles. Therapeutic effect includes, but is not limited to lysing cells by cavitation. The cells expressing the gas vesicles can optionally be used as delivery cells to preform tasks such as transporting the gas vesicles into deep tissue areas, releasing compounds at the cavitation site, and more. The gas vesicles can optionally be modified to facilitate getting the bubbles near the cavitation targets by functionalizing the gas vesicles.

    Cross amplitude modulation ultrasound pulse sequence

    公开(公告)号:US11350909B2

    公开(公告)日:2022-06-07

    申请号:US16387259

    申请日:2019-04-17

    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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