Measurement, Analysis and Interpretation of Pressure/Flow Waves …
2020年8月27日 · There are four possible wave types, forward compression waves (FCW), forward decompression wave (FDW), backward compression wave (BCW), and backward decompression wave (BDW). Wave size is quantified via peak or cumulative intensity.
Reproduction of human blood pressure waveform using …
2023年5月15日 · To reproduce the blood pressure (BP) waveform and investigate the mechanism of the BP waveform generation, we developed a dedicated hardware simulator that replicates the physiological structure...
Shortwave-infrared meso-patterned imaging enables label-free ... - Nature
2020年10月23日 · Here we develop a new imaging modality termed shortwave infrared meso-patterned imaging (SWIR-MPI) to provide label-free, non-contact, spatial mapping of water and lipid concentrations in tissue....
Blood flow makes waves across the surface of the mouse brain
2024年5月29日 · Researchers have, for the first time, visualized the full network of blood vessels across the cortex of awake mice, finding that blood vessels rhythmically expand and contract leading to “waves” washing across the surface of the brain.
Monitoring the brain - BJA Education
The normal ICP trace is pulsatile, reflecting cardiac and respiratory cycles. The cardiac component has three peaks: the P1 (percussion wave) correlating with arterial pulsation, P2 (tidal wave) generated by both arterial pulsation and resistance from intracranial parenchyma, and P3 (dicrotic wave) reflecting closure of the aortic valve.
Blood Flow Waves Wash Across Brain Surface - Neuroscience News
2024年5月29日 · Blood vessels on the brain’s surface rhythmically expand and contract, creating slow waves of blood flow. These waves occur independently of brain activity, suggesting new complexities in interpreting fMRI scans. The waves may help mix fluids around brain cells, potentially aiding in waste removal and protection against neurological disorders.
Travelling Waves Connected to Blood Flow and Motion of
2021年4月22日 · We present a brief summary of the method and apply it to obtain exact traveling wave solutions of nonlinear partial differential equations which model blood flow pulsations and nonlinearly affected motion of walls of large arteries.
Blood vessel imaging using radiofrequency-induced second harmonic ...
2018年10月19日 · We introduce a contrast mechanism for visualizing blood vessels based on radiofrequency-induced second harmonic acoustic (RISHA) signals sensing blood conductivity.
Measurement, Analysis and Interpretation of Pressure/Flow Waves …
2020年8月27日 · 'Wave analysis' refers to a group of techniques that provide valuable insight into these interactions by scrutinizing the shape of blood pressure and flow/velocity waveforms. The aim of this review paper is to provide a comprehensive introduction to wave analysis, with a focus on key concepts and practical application rather than mathematical ...
Plethysmographic Waveform Features and Hemodynamic ... - IEEE …
2023年12月4日 · Recent studies demonstrated the feasibility of using camera-based photoplethysmography (camera-PPG) signals for noncontact BP measurement. Most prior arts exploited two types of PPG features for BP estimation: hemodynamic features [pulse transit time (PTT)] and waveform features (dicrotic notch).