Massachusetts Institute of Technology

Other

Koninklijke Philips Corporation N.v.

Heng Yang

Brian W Anthony

Sheng-Wen Huang

Hua Xie

Man Nguyen

Donghyun Kim

Felix Jan Van De Donk

Systems and methods for ultrasound shear wave elastography (SWE) are described. According to examples, an ultrasound SWE system includes an ultrasound probe (), an actuation assembly () 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 () coupled to the actuation assembly to control the actuation assembly to apply the force responsive to a trigger signal, and ultrasound scanner () 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.

System and method for ultrasound shear wave elastography using external mechanical vibrations

An aircraft convertible between fixed-wing and hovering orientations includes a fuselage. The aircraft includes a main wing pair comprising two opposing wings attached to the fuselage, where each wing of the two opposing wings includes a fixed wing section attached to the fuselage and a movable wing section rotatably mounted to the fixed wing section. The aircraft includes at least a first propulsor mounted to the movable wing section of each of the two opposing wings. The aircraft includes at least a first rotation mechanism attached to the fixed wing section and movable wing section of each of the two opposing wings, the at least a first rotation mechanism configured to rotate the movable wing section between a first movable wing section position parallel to the fixed wing section and a second movable wing section position perpendicular to the fixed wing section.

Aircraft convertible between fixed-wing and hovering orientations

A mechanical vibration source for a shear wave elastography system has a contact surface shaped to provide a point source of mechanical energy when striking a target surface of a medium. This point source usefully mitigates high frequency components and other artifacts in an induced shear wave. Other techniques may be used in combination with this mechanical energy source to improve shear wave elastography and facilitate miniaturization for deployment, e.g., within a handheld imaging device.

Methods and systems for shear wave elastography

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Cambridge, MA, United States of America

Heng Yang