Association of remote imaging photoplethysmography and cutaneous perfusion in volunteers

Rasche, Stefan; Huhle, Robert; Junghans, Erik; Abreu, Marcelo Gama de; Ling, Yao; Trumpp, Alexander; Zaunseder, Sebastian

doi:10.1038/s41598-020-73531-0

Cited by 17 publications

(10 citation statements)

References 38 publications

(44 reference statements)

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“…PPG has previously shown potential to be used in a camera-based intraoperative setting 26 , where data from the green channel could estimate the heart rate in 95.6% of cases. rPPG has been shown to be closely associated with cutaneous perfusion and sensitive to autonomic nervous activity 27 . A correlation of 0.91 has been shown between PPG and one of the main technologies for studying microcirculation, laser Doppler flowmetry, for endothelial activities 28 .…”

Section: Introductionmentioning

confidence: 99%

Photoplethysmography for demarcation of cutaneous squamous cell carcinoma

Rasmussen¹,

Nielsen

Hody

et al. 2021

Sci Rep

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A video processing algorithm designed to identify cancer suspicious skin areas is presented here. It is based on video recordings of squamous cell carcinoma in the skin. Squamous cell carcinoma is a common malignancy, normally treated by surgical removal. The surgeon should always balance sufficient tissue removal against unnecessary mutilation, and therefore methods for distinction of cancer boundaries are wanted. Squamous cell carcinoma has angiogenesis and increased blood supply. Remote photoplethysmography is an evolving technique for analysis of signal variations in video recordings in order to extract vital signs such as pulsation. We hypothesize that the remote photoplethysmography signal inside the area of a squamous cell carcinoma is significantly different from the surrounding healthy skin. Based on high speed video recordings of 13 patients with squamous cell carcinoma, we have examined temporal signal differences in cancer areas versus healthy skin areas. A significant difference in temporal signal changes between cancer areas and healthy areas was found. Our video processing algorithm showed promising results encouraging further investigation to clarify how detailed distinctions can be made.

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Section: Introductionmentioning

confidence: 99%

Photoplethysmography for demarcation of cutaneous squamous cell carcinoma

Rasmussen¹,

Nielsen

Hody

et al. 2021

Sci Rep

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“…Since the propagation of green light into the skin is circumscribed to about 1 mm [37,38], the hemodynamic information content of iPPG is specific for the cutaneous microcirculation. Though not a direct measure, iPPG signals are strongly associated to cutaneous perfusion [13].…”

Section: Discussionmentioning

confidence: 99%

“…The iPPG signal is affected by autonomic nervous activity and vasomotor control in the peripheral vascular bed, such as in reactions to hot and cold thermal stimuli [8,9], topically induced cutaneous vasodilation [10,11], the vasodilatory effects of regional anaesthesia and reactive hyperaemia after vascular occlusion [11]. The blood volume pulse detected by iPPG is seen as an indirect measurement of skin perfusion [1,12,13]. This idea has been implemented in studies assessing burn wounds [14] and free flaps in plastic surgery, [15] or to reveal changes in the microcirculation of the skin associated with migraine [10,16].…”

Section: Introductionmentioning

confidence: 99%

Contact-Free Optical Assessment of Changes in the Chest Wall Perfusion after Coronary Artery Bypass Grafting by Imaging Photoplethysmography

Kukel

Trumpp

Plötze³

et al. 2020

Applied Sciences

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Imaging photoplethysmography (iPPG) is a contact-free monitoring of the cutaneous blood volume pulse by RGB (red-green-blue) cameras. It detects vital parameters from skin areas and is associated to cutaneous perfusion. This study investigated the use of iPPG to quantify changes in cutaneous perfusion after major surgery. Patients undergoing coronary artery bypass grafting (CABG) were scanned before surgery and in three follow-up measurements. Using an industrial-grade RGB camera and usual indoor lighting, a contact-free imaging plethysmogram from the chest was obtained. Changes of the iPPG signal strength were evaluated in view of both the operation itself as well as the unilateral preparation of the internal thoracic artery (ITA) for coronary artery grafting, which is the main blood source of the chest wall. iPPG signal strength globally decreased after surgery and recovered partially during the follow up measurements. The ITA preparation led to a deeper decrease and an attenuated recovery of the iPPG signal strength compared to the other side of the chest wall. These results comply with the expected changes of cutaneous perfusion after CABG using an ITA graft. iPPG can be used to assess cutaneous perfusion and its global changes after major surgery as well as its local changes after specific surgical procedures.

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“…iPPG offers a solution to use a regular camera [ 26 ], a surveillance camera, or even a mobile camera to capture PPG from the face, forehead, chest, finger, or any exposed skin from different body parts. iPPG discovery opened up a new field of research and played an important role in remote patient monitoring experiments [ 14 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ]. Deep learning hype is also brought to the field of iPPG [ 14 , 15 ].…”

Section: Diagnostic Features and Their Clinical Usagesmentioning

confidence: 99%

“…iPPG was used to detect blood flow changes during thermal exposure to the skin [ 28 ]. It is also found that iPPG is also associated with cutaneous perfusion [ 32 ].…”

Section: Diagnostic Features and Their Clinical Usagesmentioning

confidence: 99%

Diagnostic Features and Potential Applications of PPG Signal in Healthcare: A Systematic Review

et al. 2022

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Recent research indicates that Photoplethysmography (PPG) signals carry more information than oxygen saturation level (SpO2) and can be utilized for affordable, fast, and noninvasive healthcare applications. All these encourage the researchers to estimate its feasibility as an alternative to many expansive, time-wasting, and invasive methods. This systematic review discusses the current literature on diagnostic features of PPG signal and their applications that might present a potential venue to be adapted into many health and fitness aspects of human life. The research methodology is based on the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines 2020. To this aim, papers from 1981 to date are reviewed and categorized in terms of the healthcare application domain. Along with consolidated research areas, recent topics that are growing in popularity are also discovered. We also highlight the potential impact of using PPG signals on an individual’s quality of life and public health. The state-of-the-art studies suggest that in the years to come PPG wearables will become pervasive in many fields of medical practices, and the main domains include cardiology, respiratory, neurology, and fitness. Main operation challenges, including performance and robustness obstacles, are identified.

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Association of remote imaging photoplethysmography and cutaneous perfusion in volunteers

Cited by 17 publications

References 38 publications

Photoplethysmography for demarcation of cutaneous squamous cell carcinoma

Photoplethysmography for demarcation of cutaneous squamous cell carcinoma

Contact-Free Optical Assessment of Changes in the Chest Wall Perfusion after Coronary Artery Bypass Grafting by Imaging Photoplethysmography

Diagnostic Features and Potential Applications of PPG Signal in Healthcare: A Systematic Review

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