CODED HEMODYNAMIC IMAGING
We introduce the concept of Coded Hemodynamic Imaging (CHI), where an innovative, highly-compact pulsed lighting and detection apparatus captures light fluctuations over time and space on various parts of the body simultaneously using spatiotemporal-coded pulse sequences. These spatiotemporal light fluctuation measurements are then relayed to a digital signal processing unit from which blood-flow patterns can be computed. CHI enables touchless monitoring of vital signs that could lead to improved detection and prevention of some cardiovascular issues, as well as greater independence for older adults.
CHI is the first portable system that monitors a patient's blood flow at multiple arterial points simultaneously and without direct contact with the skin. Traditional systems in wide use now take one blood pulse reading at one spot on the body. On the other hand, CHI acts like many virtual sensors that measure blood flow behaviour on various parts of the body. This is analogous to being able to measure the traffic flow across an entire city (CHI) rather than just through one intersection (traditional systems).
CHI ideal for assessing patients with painful burns, highly contagious diseases, or infants in neonatal intensive care whose tiny fingers make traditional monitoring difficult. Continuous data collection at different parts of the body provides a more complete picture of what’s happening in the body. Whole-body imaging opens doors for advanced monitoring that can’t be done with the traditional, single-point methods.
An example video of the CHI system monitoring blood-flow patterns through the neck and face (slowed down to 1/6 normal speed):
For more information on part of the technology behind the proposed CHI device, please read:
1. R. Amelard, R. Hughson, D. Greaves, K. Pfisterer, J. Leung, D. Clausi, and A. Wong, Non-contact hemodynamic imaging reveals the jugular venous pulse waveform. Nature Scientific Reports, 2016.
2. R. Amelard, D. Clausi, and A. Wong, A spectral-spatial fusion model for robust blood pulse waveform extraction in photoplethysmographic imaging. Biomedical Optics Express, 2016.
3. R. Amelard, D. Clausi, and A. Wong, Spatial probabilistic pulsatility model for enhancing photoplethysmographic imaging systems. Journal of Biomedical Optics, 2016.
4. M. Wilson, R. Amelard, D. Clausi, and A. Wong, Co-integrating thermal and hemodynamic imaging for physiological monitoring. Journal of Computational Vision and Imaging Systems, 2016.
5. R. Amelard, C. Scharfenberger, F. Kazemzadeh, K. Pfisterer, B. Lin, D. Clausi, and A. Wong, Feasibility of long-distance heart rate monitoring using transmittance photoplethysmographic imaging (PPGI). Nature Scientific Reports, 2015. (Top 5% of all research outputs scored by Altmetric with a score of 160)
6. R. Amelard, D.A. Clausi, and A. Wong, Spectral photoplethysmographic imaging sensor fusion for enhanced heart rate detection, the proceedings of SPIE Photonics West, 2016.
7. R. Amelard, K. Pfisterer, D.A. Clausi, and A. Wong, Non-contact hematoma damage and healing assessment using reflectance photoplethysmographic imaging, the proceedings of SPIE Photonics West, 2016.
8. R. Amelard, J. Leung, D. Clausi, and A. Wong, A Portable Plug-and-Play Imaging System for Physiological Monitoring. Journal of Computational Vision and Imaging Systems, 2015.
9. R. Amelard, C. Scharfenberger, A. Wong, D.A. Clausi, Illumination-compensated, non-contact photoplethysmographic imaging via temporally-coded illumination, the proceedings of SPIE Photonics West, 2015.
10. R. Amelard and A. Wong, System and Method for Spatial Cardiovascular Monitoring, US Patent Application 62/270,409.
The CHI technology received widespread international media coverage, including TV appearances:
We introduce the concept of Coded Hemodynamic Imaging (CHI), where an innovative, highly-compact pulsed lighting and detection apparatus captures light fluctuations over time and space on various parts of the body simultaneously using spatiotemporal-coded pulse sequences. These spatiotemporal light fluctuation measurements are then relayed to a digital signal processing unit from which blood-flow patterns can be computed. CHI enables touchless monitoring of vital signs that could lead to improved detection and prevention of some cardiovascular issues, as well as greater independence for older adults.
CHI is the first portable system that monitors a patient's blood flow at multiple arterial points simultaneously and without direct contact with the skin. Traditional systems in wide use now take one blood pulse reading at one spot on the body. On the other hand, CHI acts like many virtual sensors that measure blood flow behaviour on various parts of the body. This is analogous to being able to measure the traffic flow across an entire city (CHI) rather than just through one intersection (traditional systems).
CHI ideal for assessing patients with painful burns, highly contagious diseases, or infants in neonatal intensive care whose tiny fingers make traditional monitoring difficult. Continuous data collection at different parts of the body provides a more complete picture of what’s happening in the body. Whole-body imaging opens doors for advanced monitoring that can’t be done with the traditional, single-point methods.
An example video of the CHI system monitoring blood-flow patterns through the neck and face (slowed down to 1/6 normal speed):
For more information on part of the technology behind the proposed CHI device, please read:
1. R. Amelard, R. Hughson, D. Greaves, K. Pfisterer, J. Leung, D. Clausi, and A. Wong, Non-contact hemodynamic imaging reveals the jugular venous pulse waveform. Nature Scientific Reports, 2016.
2. R. Amelard, D. Clausi, and A. Wong, A spectral-spatial fusion model for robust blood pulse waveform extraction in photoplethysmographic imaging. Biomedical Optics Express, 2016.
3. R. Amelard, D. Clausi, and A. Wong, Spatial probabilistic pulsatility model for enhancing photoplethysmographic imaging systems. Journal of Biomedical Optics, 2016.
4. M. Wilson, R. Amelard, D. Clausi, and A. Wong, Co-integrating thermal and hemodynamic imaging for physiological monitoring. Journal of Computational Vision and Imaging Systems, 2016.
5. R. Amelard, C. Scharfenberger, F. Kazemzadeh, K. Pfisterer, B. Lin, D. Clausi, and A. Wong, Feasibility of long-distance heart rate monitoring using transmittance photoplethysmographic imaging (PPGI). Nature Scientific Reports, 2015. (Top 5% of all research outputs scored by Altmetric with a score of 160)
6. R. Amelard, D.A. Clausi, and A. Wong, Spectral photoplethysmographic imaging sensor fusion for enhanced heart rate detection, the proceedings of SPIE Photonics West, 2016.
7. R. Amelard, K. Pfisterer, D.A. Clausi, and A. Wong, Non-contact hematoma damage and healing assessment using reflectance photoplethysmographic imaging, the proceedings of SPIE Photonics West, 2016.
8. R. Amelard, J. Leung, D. Clausi, and A. Wong, A Portable Plug-and-Play Imaging System for Physiological Monitoring. Journal of Computational Vision and Imaging Systems, 2015.
9. R. Amelard, C. Scharfenberger, A. Wong, D.A. Clausi, Illumination-compensated, non-contact photoplethysmographic imaging via temporally-coded illumination, the proceedings of SPIE Photonics West, 2015.
10. R. Amelard and A. Wong, System and Method for Spatial Cardiovascular Monitoring, US Patent Application 62/270,409.
The CHI technology received widespread international media coverage, including TV appearances:
- ``Coded Hemodynamic Imaging,'' Focus Cantonese OMNI Television, May 4, 2016.
- ``Invent This Week: Day 3,''Daily Planet TV Show, February, 2016 (showcased CHI technology).
- ``"Selfie" under the skin: Mini camera tracking blood flow,''Sina, February, 2016.
- ``It takes a village,''Lab Business, January/February, 2016 (showcased CHI technology).
- ``The selfie that really DOES get under your skin: Camera can track blood flow and show it pulsing through the body,''Daily Mail, January, 2016.
- ``Imaging technology can spot heart problems at a glance,''The Spectator, January, 2016.
- ``Single Blood Pulse Reading Meets its Waterloo,''Intellectual Capitals, January, 2016.
- ``Non-contact imaging device for monitoring blood flow,'' The Engineer, January, 2016.
- ``Touchless UW device monitors blood flow to look for abnormalities,'' The Waterloo Region Record, January, 2016.
- ``Whole-body imaging technology uses contactless tracking of blood flow,'' Gizmag Magazine, January, 2016.
- ``Canadian scientists invent portable device that can see blood flow in your veins to detect disease,'' International Business Times, January, 2016.
- ``Now a body imaging device can help detect heart problems early,'' Deccan Chronicle, January, 2016.
- ``Touchless device can provide whole body blood flow monitoring,'' United Press International, January, 2016.
- ``New touchless device to better detect heart problems,'' Yahoo! News, January, 2016.
- ``New touchless device to detect heart problems early,'' Business Standard, January, 2016.
- ``UW researchers out with new touchless device to prevent heart issues,'' 570 News, January, 2016.
- ``Coded Hemodynamic Imaging: Dieses System macht den menschlichen Blutfluss sichtbar,'' Trends Der Zukunft, January, 2016.
- ``Se puede predecir un ataque al corazon? Ese es el objetivo de este revolucionario dispositivo virtual,'' Prnoticias, January, 2016.
- ``Un systeme permet de monitorer le rythme cardiaque sans contact,'' Pourquoi Docteur, January, 2016.