Endra Life Sciences Inc.

Duke University

Idan Steinberg

Michael M Thornton

Christopher Nelson Davis

Paolo Maccarini

Jang Hwan Cho

Charlton Chen

Dima Shmidov

Jordan Sengenberger

Christopher Bull

A radio frequency applicator, including a waveguide having a first interior surface comprising a first aperture, a second interior surface opposing the first interior surface, a third interior surface adjacent to the first and second interior surfaces, a fourth interior surface opposing the third interior surface, and a fifth interior surface perpendicular to the first, second, third, and fourth interior surfaces, an aperture antenna, a solid dielectric insert within the waveguide, the solid dielectric insert having a second aperture formed therethrough that is configured for alignment with the first aperture, an RF connector, configured to receive generated RF energy pulses, at least one planar-shaped shim, having a third aperture therethrough configured to align with the first and second apertures, and a radio frequency feed pin connected to the RF connector, disposed within the first, second, and third apertures and affixed to the second interior surface of the waveguide.

Radio frequency applicator

A method for determining an electromagnetic field spatial distribution of a radio frequency (RF) antenna which includes the steps of emitting with the RF antenna, a plurality of RF energy pulses into a homogeneous medium; performing a plurality of thermoacoustic signal measurements of the plurality of RF energy pulses, wherein each of the thermoacoustic signal measurements is performed in a similar manner; utilizing a variance in the plurality of thermoacoustic signal measurements to generate a reconstructed pressure distribution for a volume located within the homogeneous medium; and calculating the RF antenna electromagnetic field spatial distribution within the volume based upon the reconstructed pressure distribution for the volume located within the homogeneous medium.

Method and system to determine radio frequency antenna electromagnetic field spatial distribution

A thermoacoustic measurement probe includes an open-ended hollow radio-frequency (RF) waveguide; at least two RF feeds positioned within the open-ended hollow RF waveguide, wherein each RF feed is configured to provide RF energy; and a thermoacoustic transducer, wherein the open-ended hollow RF waveguide, in the form of a sleeve, surrounds and is mechanically joined to the thermoacoustic transducer.

Thermoacoustic measurement probe

A thermoacoustic probe for a thermoacoustic imaging system, the probe including: a radio-frequency (RF) applicator having an insert, wherein the applicator is configured to transmit at least one radio frequency source; an integral electromagnetic matching and acoustic extinction layer having a substantially flat-planar side and a substantially convex side, wherein the substantially flat-planar side of the integral electromagnetic matching and acoustic extinction layer is coupled to the insert of the RF applicator; and an optical transducer coupled to the substantially convex side of the integral electromagnetic matching and acoustic extinction layer.

Thermoacoustic probe

A thermoacoustic probe for a thermoacoustic imaging system, the probe including: a radio-frequency (RF) applicator having an insert, wherein the applicator is configured to transmit at least one radio frequency source; an electromagnetic matching layer coupled to the insert of the RF applicator; an optical transducer that is coupled to the electromagnetic matching layer; and an acoustic matching layer that is coupled to the optical transducer.

A radio frequency applicator for a thermoacoustic imaging system is disclosed. The applicator includes, a waveguide with an internal radio frequency source, wherein the waveguide has an opening, an electromagnetic matching layer coupled to the waveguide and proximate to the opening, and an acoustic absorbing layer that is coupled to the matching layer.

Radio frequency applicator for a thermoacoustic imaging system

A thermoacoustic measurement probe may include an open-ended hollow radio-frequency (RF) waveguide; and a thermoacoustic transducer, wherein the open-ended hollow RF waveguide, in the form of a sleeve, surrounds and is mechanically joined to the thermoacoustic transducer.

Growing community of inventors

Superior Charter Township, MI, United States of America

Idan Steinberg