Development of noninvasive measurement of peripheral circulation and its medical application

Nakamura, Hideki

doi:10.1007/bf02931222

Cited by 3 publications

(1 citation statement)

References 70 publications

(16 reference statements)

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“…1). PPG is used widely to measure the pulse waveform [26], pulse wave reflection [27], cutaneous (dermal) perfusion [28], and capillary micro-circulation [29,30]. Recently, several researchers have proposed a series of bioheat and statistical models that in combination with customized highly sensitive thermal imaging hardware can measure various physiological variables at several feet away from the subjects.…”

Section: Introductionmentioning

confidence: 99%

Thermography Quantification of Human Perfusion Thermal Signature

AlZubaidi¹,

Hussein²,

Basil³

et al. 2018

Preprint

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Blood perfusion quantification is important vital parameters in different diagnostic procedure, using infrared thermography imaging; it is reliable to use this technique as non-contact, non-invasive blood flow measurement method. Therefore, we developed a measurement protocol for blood flow over the arm's anterior surface. By using the superficial brachial and radial veins to be monitored under the impact of cold-excitation of (2 °C to 5 °C), the blood perfusion signal was detected using thermal imager of long-wave infrared spectral range (LWIR, 7μm - 14 μm). The simulation of Penne's bioheat transfer equation was performed to be compared with results obtained from the infrared thermography. Furthermore, the proposed blood flow monitoring using external adjusting of the excitation temperature, by using (cold-compress, or cold air-stream) applied to the region under testing. The signal detected resembles to the hemodynamic pulse of the superficial veins, in the definition of systolic and diastolic phases of the cardiac cycle. Moreover, statistical analysis applied to the BFIRT signals from 24 subjects to estimate the skin's mean temperature after recovery from the thermal excitation.

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Section: Introductionmentioning

confidence: 99%

Thermography Quantification of Human Perfusion Thermal Signature

AlZubaidi¹,

Hussein²,

Basil³

et al. 2018

Preprint

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Review of Biomedical Applications of Contactless Imaging of Neonates Using Infrared Thermography and Beyond

AlZubaidi

Ethawi

Schmölzer

et al. 2018

MPs

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The sick preterm infant monitoring is an intriguing job that medical staff in Neonatal Intensive Care Units (NICU) must deal with on a daily basis. As a standards monitoring procedure, preterm infants are monitored via sensors and electrodes that are firmly attached to their fragile and delicate skin and connected to processing monitors. However, an alternative exists in contactless imaging to record such physiological signals (we call it as Physio-Markers), detecting superficial changes and internal structures activities which can be used independently of, or aligned with, conventional monitors. Countless advantages can be gained from unobtrusive monitoring not limited to: (1) quick data generation; (2) decreasing physical and direct contact with skin, which reduces skin breakdown and minimizes risk of infection; and (3) reduction of electrodes and probes connected to clinical monitors and attached to the skin, which allows greater body surface-area for better care. This review is an attempt to build a solid ground for and to provide a clear perspective of the potential clinical applications of technologies inside NICUs that use contactless imaging modalities such as Visible Light Imaging (VLI), Near Infrared Spectroscopy (NIRS), and Infrared Thermography (IRT).

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