PHOTOACOUSTIC MONITORING TECHNIQUE
First Claim
Patent Images
1. A photoacoustic monitoring system, comprising:
- a memory storing instructions for;
receiving a signal from an acoustic detector configured to detect a photoacoustic effect from light emitted into a patient'"'"'s tissue, wherein the signal is representative of an indicator concentration in an artery and a vein; and
determining a physiological parameter based at least in part on the signal; and
a processor configured to execute the instructions.
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Abstract
Various methods and systems for photoacoustic patient monitoring are provided. A photoacoustic system includes a light emitting component that emits one or more wavelengths of light into an interrogation region of a patient and an acoustic detector that detects acoustic energy generated by the interrogation region of the patient in response to the emitted light. The system may be implemented to receive photoacoustic waves from a local vein and artery and determine hemodynamic parameters based on a summed indicator dilution curve representative of both arterial and venous indicator dilution.
13 Citations
20 Claims
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1. A photoacoustic monitoring system, comprising:
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a memory storing instructions for; receiving a signal from an acoustic detector configured to detect a photoacoustic effect from light emitted into a patient'"'"'s tissue, wherein the signal is representative of an indicator concentration in an artery and a vein; and determining a physiological parameter based at least in part on the signal; and a processor configured to execute the instructions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A photoacoustic monitoring system, comprising:
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a monitor configured to; receive a signal representative of an indicator concentration in an artery and a vein; and determine a physiological parameter based at least in part on the signal; and a sensor coupled to the monitor, comprising; a light source configured to emit light into a tissue, wherein the tissue includes an artery and a vein; and a flat or fixed focus ultrasound receiver configured to detect a photoacoustic effect from the light emitted into the tissue to generate the signal, wherein a focal length of the flat or fixed focus ultrasound receiver encompasses the artery and the vein. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method, comprising:
using a processor; receiving a signal from a fixed focus or flat acoustic detector configured to detect a photoacoustic effect from light emitted into a patient'"'"'s tissue, wherein the signal is representative of an indicator concentration in an artery and a vein; and determining a physiological parameter based at least in part on the signal. - View Dependent Claims (17, 18, 19, 20)
Specification