Assessing Cardiovascular Function Using an Optical Sensor
AssigneeGoogle Inc.
InventorsBrian Derek DeBusschere, Jeffrey L. Rogers
Life of this patent
Estimating the term…
Abstract
This document describes assessing cardiovascular function using an optical sensor, such as through sensing relevant hemodynamics understood by pulse transit times, blood pressures, pulse-wave velocities, and, in more breadth, ballistocardiograms and pressure-volume loops. The techniques disclosed in this document use various optical sensors to sense hemodynamics, such as skin color and skin and other organ displacement. These optical sensors require little if any risk to the patient and are simple and easy for the patient to use.
Claims20
A computer-implemented method comprising:
- receiving, from an optical sensor capable of detecting blood volume at two or more regions of a patient, an image indicating a first blood volume for a first region and another image indicating a second blood volume for a second region;
- comparing the first blood volume for the first region and the second blood volume for the second region to provide a blood-volume asymmetry;
- and
- determining, based on the blood-volume asymmetry, a difference in vascular function between the first region and the second region.
A system comprising:
- an optical sensor capable of detecting blood volume at two or more regions of a patient;
- a computer processor;
- and
- one or more computer-readable storage media having instructions stored thereon that, responsive to execution by the computer processor, performs operations comprising:
- receiving, from the optical sensor, an image indicating a first blood volume for a first region and another image indicating a second blood volume for a second region;
- comparing the first blood volume for the first region and the second blood volume for the second region to provide a blood-volume asymmetry;
- and
- determining, based on the blood-volume asymmetry, a difference in vascular function between the first region and the second region.
One or more computer-readable storage media having instructions stored thereon that, responsive to execution by a computer processor, performs operations comprising:
- receiving, from an optical sensor capable of detecting blood volume at two or more regions of a patient, an image indicating a first blood volume for a first region and another image indicating a second blood volume for a second region;
- comparing the first blood volume for the first region and the second blood volume for the second region to provide a blood-volume asymmetry;
- and
- determining, based on the blood-volume asymmetry, a difference in vascular function between the first region and the second region.
Dependencies are inferred from the claim text.