Title:
SYSTEMS AND METHODS FOR CALIBRATING AND CORRECTING A SPECKLE CONTRAST FLOWMETER
Document Type and Number:
WIPO Patent Application WO/2017/184630
Kind Code:
A8
Abstract:
Disclosed herein are systems, methods, and devices for calibrating contrast measurements from laser speckle imaging systems to accurately determine unknown particle motion characteristics, such as flow rate. The calibration stores to memory calibration data, which may include a set of measurements from samples with known particle characteristics and/or estimates of noise, including the effects on contrast arising from undesired signals unrelated to the unknown particle motion characteristics. The calibration data may be accessed and used to correct an empirical measurement of contrast and/or interpolate a value of the unknown particle motion characteristic. The system may include a light source, photodetector, processor, and memory, which can be combined into a single device, such as a wearable device, for providing calibrated flow measurements. The device may be used, for example, to measure blood flow, cardiac output, and heart rate, and can be used to amplify the pulsatile signal.
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Inventors:
YANG BRUCE (US)
RICE TYLER (US)
WHITE SEAN (US)
RICE TYLER (US)
WHITE SEAN (US)
Application Number:
PCT/US2017/028178
Publication Date:
October 11, 2018
Filing Date:
April 18, 2017
Export Citation:
Assignee:
LASER ASS SCIENCES INC (US)
International Classes:
G01F1/7086; H04N7/18; G06F17/18
Attorney, Agent or Firm:
MALLON, Joseph, J. (US)
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