公开(公告)号：US11672507B2

公开(公告)日：2023-06-13

申请号：US16499463

申请日：2018-03-30

Applicant: KONINKLIJKE PHILIPS N.V. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Man Nguyen ,  Hua Xie ,  Sheng-Wen Huang ,  Brian Anthony ,  Heng Yang

IPC: A61B8/08 ,  A61B8/14 ,  A61B8/00 ,  G01S7/52

CPC classification number: A61B8/485 ,  A61B8/14 ,  A61B8/4209 ,  A61B8/4254 ,  A61B8/5246 ,  A61B8/5276 ,  A61B8/54 ,  G01S7/52042

Abstract: Systems and methods for ultrasound shear wave elastography (SWE) are described. According to examples, an ultrasound SWE system includes an ultrasound probe (120), an actuation assembly (130) coupled to the probe and configured to apply an external force against a subject for generating a shear wave within a target region, a controller (140) coupled to the actuation assembly to control the actuation assembly to apply the force responsive to a trigger signal, and ultrasound scanner (110) configured to generate the trigger signal, and further configured to generate an elastography image based at least in part on echo signals received from the target region.

公开(公告)号：US20210076944A1

公开(公告)日：2021-03-18

申请号：US17025309

申请日：2020-09-18

Applicant: Massachusetts Institute of Technology

Inventor： Brian Anthony ,  Xiang Zhang ,  Jonathan Randall Fincke ,  Robert W. Haupt ,  Charles M. Wynn

IPC: A61B5/00 ,  G06T11/00

Abstract: A system and method for image reconstruction for non-contact ultrasound is provided, where maps or ultrasound images of a subject may be generated without physically contacting the subject. Adjusting or optimizing the photoacoustic excitation system may be performed, such as with beam shaping, surface modifications, or closed-loop automated adjustments. 2D and/or 3D spatial locations of source and receiver laser spots may be used to provide a spatial reference location for ultrasound image reconstruction in a clinically efficacious manner. In addition, point tracking, surface profile characterization, laser adjustments, and/or surface enhancements may be used to facilitate image reconstruction of the subject.

公开(公告)号：US20140037909A1

公开(公告)日：2014-02-06

申请号：US13956702

申请日：2013-08-01

Applicant: Massachusetts Institute of Technology

Inventor： Muhammad A. Hawwa ,  Hussain Al-Qahtani ,  Hassen Ouakad ,  David E. Hardt ,  Joseph Edward Petrzelka ,  Brian Anthony

IPC: G01L9/00

CPC classification number: G01L9/0072 ,  Y10T428/24612 ,  Y10T428/31663 ,  Y10T428/31938

Abstract: A practical implementation of a flexible and transparent capacitive sensor is disclosed. The results show that, while PDMS is an inherently nonlinear material, linear behavior with minimal hysteresis can be obtained over an appropriately small range of operation. Moreover, high resolution has been achieved during these tests.

Abstract translation: 公开了灵活和透明的电容式传感器的实际实现。 结果表明，虽然PDMS是一种固有的非线性材料，但是在适当小的操作范围内可以获得具有最小滞后的线性行为。 此外，在这些测试中已经实现了高分辨率。

公开(公告)号：US11378552B2

公开(公告)日：2022-07-05

申请号：US16893612

申请日：2020-06-05

Applicant: Massachusetts Institute of Technology

Inventor： Robin Singh ,  Anuradha M. Agarwal ,  Brian Anthony

IPC: G01N29/24 ,  G01N21/17 ,  A61B5/00 ,  A61B8/14

Abstract: A microscale photoacoustic sensor uses the detection of ultrasound waves generated by a sample in response to incident light absorption to perform photoacoustic spectroscopy, imaging, and microscopy. The microscale photoacoustic sensor, including components to excite a sample and detect ultrasound waves, may be integrated onto a single chip. The microscale photoacoustic sensor may excite a sample using a metasurface collimator. The metasurface collimator includes an array of diffraction grooves to collimate an excitation beam uniformly out of the plane of the sensor to create a wide and homogeneous beam spot. The microscale photoacoustic sensor may detect ultrasound waves using an optical photoacoustic transducer. The optical photoacoustic transducer includes a resonator on a mechanical membrane to detect ultrasound waves with high sensitivity. The microscale photoacoustic sensor may be used in applications such as deep-tissue neural imaging or microfluidic biological screening.

公开(公告)号：US20200060654A1

公开(公告)日：2020-02-27

申请号：US16499463

申请日：2018-03-30

Applicant: KONINKLIJKE PHILIPS N.V. ,  MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Man Nguyen ,  Hua Xie ,  Sheng-Wen Huang ,  Brian Anthony ,  Heng Yang

IPC: A61B8/08 ,  A61B8/14 ,  A61B8/00 ,  G01S7/52

Abstract: Systems and methods for ultrasound shear wave elastography (SWE) are described. According to examples, an ultrasound SWE system includes an ultrasound probe (120), an actuation assembly (130) coupled to the probe and configured to apply an external force against a subject for generating a shear wave within a target region, a controller (140) coupled to the actuation assembly to control the actuation assembly to apply the force responsive to a trigger signal, and ultrasound scanner (110) configured to generate the trigger signal, and further configured to generate an elastography image based at least in part on echo signals received from the target region.