Optical imaging with unshifted reference beam
AssigneeOpen Water Internet Inc.
InventorsEdgar Emilio Morales Delgado, Caitlin Regan, Mary Lou Jepsen, Hosain Haghany, Sarmishtha Satpathy, Wilson Toy, Soren Konecky
Life of this patent
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Abstract
An ultrasound emitter launches an ultrasonic signal into a diffuse medium such as tissue. The diffuse medium is illuminated with an infrared illumination signal. activating an ultrasound emitter to launch an ultrasonic signal into a diffuse medium. An infrared reference beam is interfered with an infrared exit signal having an infrared wavelength that is the same as the infrared illumination signal. An infrared image is captured of the interference of the infrared reference beam with the infrared exit signal.
Claims17
A method of medical imaging comprising:
- illuminating tissue with an infrared illumination signal having an infrared wavelength;
- interfering an infrared reference beam with an infrared exit signal, wherein the infrared exit signal is the infrared illumination signal exiting the tissue, and wherein the infrared reference beam has the infrared wavelength that is the same as the infrared illumination signal;
- capturing a base holographic infrared image of an interference of the infrared reference beam with a base infrared exit signal;
- scanning an ultrasound emitter to direct an ultrasonic signal to a plurality of voxels of the tissue while the infrared illumination signal is illuminating the tissue, wherein the base holographic infrared image is captured when the ultrasonic signal is not propagating through the tissue;
- and
- capturing a plurality of holographic infrared images corresponding to the plurality of voxels that the ultrasound emitter is scanned to, the plurality of holographic images capturing an interference of the infrared reference beam with the infrared exit signal at a time when the ultrasonic signal is directed to a particular voxel in the plurality of voxels.
A method comprising:
- activating an ultrasound emitter to launch an ultrasonic signal into a diffuse medium;
- illuminating the diffuse medium with an infrared illumination signal having an infrared wavelength;
- interfering an infrared reference beam with an infrared exit signal, wherein the infrared exit signal is the infrared illumination signal exiting the diffuse medium, and wherein the infrared reference beam has the infrared wavelength that is the same as the infrared illumination signal;
- capturing an infrared image of the interference of the infrared reference beam with the infrared exit signal;
- generating first intensity data from the infrared image, wherein the ultrasonic signal is focused to a first voxel while the infrared image is being captured;
- and
- incorporating the first intensity data as a first voxel value in a composite image of the diffuse medium, the first voxel value corresponding to a first voxel position in the composite image.
A method comprising:
- illuminating a diffuse medium with an infrared illumination signal;
- capturing a base infrared signal of an infrared exit signal, wherein the infrared exit signal is the infrared illumination signal exiting the diffuse medium;
- directing an ultrasonic signal to a voxel in the diffuse medium;
- and
- capturing an infrared signal of the infrared exit signal while the ultrasonic signal is propagating through the voxel and while the infrared illumination signal is illuminating the voxel,
- wherein the base infrared signal captures an interference of the infrared exit signal and an infrared reference beam having a same wavelength as the exit signal, the base infrared signal captured while the ultrasonic signal is not propagating through the diffuse medium,
- and wherein, the infrared signal captures a second interference of the infrared exit signal and the infrared reference beam while the ultrasonic signal is propagating through the voxel.
Dependencies are inferred from the claim text.