System and method for detection of brain edema using spectrophotometry
First Claim
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1. A method of detecting or monitoring brain edema in a patient, comprising:
- emitting a first light into the patient'"'"'s brain tissue at a first wavelength;
emitting a second light into the patient'"'"'s brain tissue at a second wavelength;
detecting the first and second lights after dispersion by the brain tissue at a detector; and
determining an amount of water proximate the brain tissue based on the detected first and second lights.
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Abstract
Embodiments of the present invention relate to a system and method of detecting or monitoring brain edema in a patient. One embodiment of the present invention includes emitting a first light into the patient'"'"'s brain tissue at a first wavelength, emitting a second light into the patient'"'"'s brain tissue at a second wavelength, detecting the first and second lights after dispersion by the brain tissue at a detector, and determining an amount of water proximate the brain tissue based on the detected first and second lights.
117 Citations
28 Claims
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1. A method of detecting or monitoring brain edema in a patient, comprising:
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emitting a first light into the patient'"'"'s brain tissue at a first wavelength; emitting a second light into the patient'"'"'s brain tissue at a second wavelength; detecting the first and second lights after dispersion by the brain tissue at a detector; and determining an amount of water proximate the brain tissue based on the detected first and second lights. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of detecting or monitoring brain edema in a patient, comprising:
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emitting a first light into the patient'"'"'s brain tissue at a first wavelength approximately 1-5 mm away from a detector, wherein the first wavelength is within a 1500-2300 nm spectral region; emitting a second light into the patient'"'"'s brain tissue at a second wavelength approximately 1-5 mm away from the detector, wherein the second wavelength is within the 1500-2300 nm spectral region; detecting the first and second lights after dispersion by the brain tissue at the detector; and determining an amount of water proximate the brain tissue based on the detected first and second lights. - View Dependent Claims (14, 15)
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16. A method of detecting or monitoring brain edema in a patient, comprising:
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emitting a first light into the patient'"'"'s brain tissue at a first wavelength approximately 10-30 mm away from a detector, wherein the first wavelength is within a 1050-1350 nm spectral region; emitting a second light into the patient'"'"'s brain tissue at a second wavelength approximately 10-30 mm away from the detector, wherein the second wavelength is within the 1050-1350 nm spectral region; detecting the first and second lights after dispersion by the brain tissue at the detector; and determining an amount of water proximate the brain tissue based on the detected first and second lights. - View Dependent Claims (17, 18)
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19. A system for detecting or monitoring brain edema in a patient, comprising:
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a first emitter configured to emit a first light into the patient'"'"'s brain tissue at a first wavelength; a second emitter configured to emit a second light into the patient'"'"'s brain tissue at a second wavelength; a detector configured to detect the first and second lights after dispersion by the brain tissue and provide signals representative of the detected first and second lights to a monitor configured to determine an amount of water proximate the brain tissue based on the detected first and second lights. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification