Compact laser-powered speckle visibility spectroscopy devices
AssigneeCalifornia Institute of Technology
InventorsSimon Mahler, Yu Xi Huang, Changhuei Yang
Life of this patent
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Abstract
Techniques for monitoring cerebral blood metrics such as cerebral blood flow, cerebral blood volume and/or heart rate are provided. In some embodiments, techniques involve a headset with at least one laser configured to emit light into the brain and one or more light detectors such as CMOS sensors that generate information indicative of light reflected from one or more structures within the brain, which can be used to determine the cerebral blood metrics. Each light detector may be positioned within 5 mm of the scalp in some cases.
Claims36
A headband configured to be worn on a head;
- and
- a laser coupled to the headband and configured to emit light into a brain within a skull of the head;
- a light detector coupled to the headband and configured to generate information indicative of light reflected from one or more structures within the brain, wherein the light detector is configured to contact or be within 5 mm of a scalp of the skull;
- and
- a power source coupled to the headband and in electrical communication with the laser.
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A multi-channel headset comprising:
- a headband configured to be worn on a head during operation;
- and
- a plurality of channels coupled to the headband, each channel comprising:
- a laser configured to emit light into a brain within a skull of the head;
- a light detector configured to generate information indicative of light emitted by the laser and reflected by one or more structures within the brain;
- and
- a power source in electrical communication with the laser;
- wherein the light detectors of the channels are configured to probe different regions of the brain.
An apparatus comprising:
- a circuit board;
- one or more processors attached to the circuit board;
- a laser diode attached to the circuit board;
- a light detector in electrical communication with the one or more processors;
- and
- a light block located between the laser diode and the light detector.
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A method of determining one or more cerebral blood metrics, the method comprising:
- causing, using a laser, light to be emitted into a brain within a skull of a head of a user;
- obtaining, using a light detector, information indicative of light reflected from one more structures within the brain;
- and
- based on the obtained information, determining one or more cerebral blood metrics as a function of time.
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Dependencies are inferred from the claim text.