Results 31 to 40 of about 1,744,925 (114)
Alternative intraoperative optical imaging modalities for fluorescence angiography in gastrointestinal surgery:spectral imaging and imaging photoplethysmography [PDF]
, 2023 Introduction: Intraoperative near-infrared fluorescence angiography with indocyanine green (ICG-FA) is a well-established modality in gastrointestinal surgery.
Sucher, Robert +13 more
core +1 more source
Validation of Skin Perfusion Monitoring by Imaging PPG versus Laser Speckle Imaging
Current Directions in Biomedical Engineering, 2023 Assessment of skin perfusion can reveal signs of deterioration and help to prevent critical states. Commonly applied clinical tests to capture skin perfusion are subjective and often hard to quantify.
Fleischhauer Vincent +2 more
doaj +1 more source
Scientific Reports, 2022 Evaluation of tissue perfusion at various stages of surgery is of great importance for the implementation of the concept of safe surgery, including operations on the abdominal organs. Currently, there is no accurate and reliable intraoperative method for
Alexei A. Kamshilin +3 more
doaj +1 more source
Non-Contact SpO2 Prediction System Based on a Digital Camera
Applied Sciences, 2021 Patients with the COVID-19 condition require frequent and accurate blood oxygen saturation (SpO2) monitoring. The existing pulse oximeters, however, require contact-based measurement using clips or otherwise fixed sensor units or need dedicated hardware ...
Ali Al-Naji +3 more
doaj +1 more source
Fatigue Driving Detection Method Based on IPPG Technology
Promet (Zagreb), 2023 Physiological signal index can accurately reflect the degree of fatigue, but the contact detection method will greatly affect the driver's driving. This paper presents a non-contact method for detecting tired driving. It uses cameras and other devices to
Jiuju Bi +3 more
doaj +1 more source
Journal of Healthcare Engineering, Volume 2019, Issue 1, 2019., 2019 To meet the need for “standard” testing system for wearable blood pressure sensors, this study intends to develop a new radial pulsation simulator that can generate age‐dependent reference radial artery pressure waveforms reflecting the physiological characteristics of human cardiovascular system. To closely duplicate a human cardiovascular system, the
Tae-Heon Yang +5 more
wiley +1 more source
Opto‐Physiological Modeling Applied to Photoplethysmographic Cardiovascular Assessment
Journal of Healthcare Engineering, Volume 4, Issue 4, Page 505-528, 2013., 2013 This paper presents opto‐physiological (OP) modeling and its application in cardiovascular assessment techniques based on photoplethysmography (PPG). Existing contact point measurement techniques, i.e., pulse oximetry probes, are compared with the next generation non‐contact and imaging implementations, i.e., non‐contact reflection and camera‐based PPG.
Sijung Hu +2 more
wiley +1 more source
Smart Garment Fabrics to Enable Non-Contact Opto-Physiological Monitoring
Biosensors, 2018 Imaging photoplethysmography (iPPG) is an emerging technology used to assess microcirculation and cardiovascular signs by collecting backscattered light from illuminated tissue using optical imaging sensors.
Dmitry Iakovlev +6 more
doaj +1 more source
Contactless Monitoring of Microcirculation Reaction on Local Temperature Changes
Applied Sciences, 2019 Assessment of skin blood flow is an important clinical task which is required to study mechanisms of microcirculation regulation including thermoregulation.
Maxim A. Volynsky +3 more
doaj +1 more source
Validation of a non-invasive imaging photoplethysmography device to assess plantar skin perfusion, a comparison with laser speckle contrast analysis [PDF]
, 2021 Assessing skin perfusion is an established and reliable method to study impaired lower limb blood flow. Laser Speckle Contrast Analysis (LASCA) has been identified as the current gold standard to measure skin perfusion. Imaging photoplethysmography (iPPG)
Chockalingam, Nachiappan +2 more
core +2 more sources