Results 101 to 110 of about 622,011 (230)

Adaptive Transcranial Ultrasound Doppler Imaging of the Brain

IEEE Transactions on Ultrasonics
The development of fully noninvasive, transcranial functional ultrasound (fUS) would increase the translatability and clinical potential of this neuroimaging modality. Unfortunately, transcranial fUS is hindered by skull-induced aberrations which degrade power Doppler image quality and lower sensitivity.
Rick Waasdorp, Eleonora Munoz Ibarra, Flora Nelissen, Baptiste Heiles, Valeria Gazzola, Guillaume Renaud, David Maresca   +6 more
openaire   +1 more source

Transcranial doppler sonography and the application in critical care and anesthesia

, 2021
This thesis discusses the application of Transcranial Doppler Sonography in the fields of critical care and anesthesiology. It highlights the mechanism of cerebrovascular hemostasis.
Larinde, Samson
core  

Mechanisms regulating cerebral perfusion during running exercise: Influence of foot strike‐induced pulsatility oscillations, CO2 reactivity and BP

The Journal of Physiology, EarlyView.
Abstract figure legend Young, healthy males and females completed an incremental running test, demonstrating a progressive increase in middle cerebral artery blood velocity (MCAv) up to maximal exercise despite reductions in end‐tidal CO2. To investigate the underlying mechanism, foot‐strike timing was synchronized to the diastolic phase of the cardiac
Lydia L. Simpson, Dean R. Perkins, Connor A. Howe, Christina D. Bruce, William K. Cornwell III, Justin S. Lawley   +5 more
wiley   +1 more source

Processing of CW Doppler images to extract velocity profile [PDF]

, 2012
The present work aims to find a good way to automatically trace the velocity profile in vessels shown in continuous wave Doppler spectrograms, replacing the more traditional manual tracing, easy to perform but rich in drawbacks.
Dainese, Clara
core  

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay, Saptarshi Mukerji, Bengt Kayser, Jui‐Lin Fan   +3 more
wiley   +1 more source

Arterial–venous differences of brain‐derived neurotrophic factor isoforms across the brain and muscle after exercise at different intensities

The Journal of Physiology, EarlyView.
Abstract figure legend Exercise‐induced increases in forearm venous plasma and serum brain‐derived neurotrophic factor (BDNF) are often assumed to be indicative of release from the brain. Sixteen healthy and physically fit adults (20–40 years old) were recruited to investigate whether exercise‐induced changes in forearm venous mature BDNF (mBDNF) and ...
Olga Tarassova, Yiwen Jiang, Helena Wallin, Mats Jensen‐Urstad, Nikola Drca, Julia Röja, Marjan Pontén, Abram Katz, Jonna Nilsson, Maria M. Ekblom, Marcus Moberg   +10 more
wiley   +1 more source

Cerebral Embolic Activity in a Patient during Acute Crisis of Takayasu’s Arteritis

Case Reports in Neurology, 2012
Takayasu’s arteritis is a disease that affects large vessels and may cause neurological symptoms either by stenoses/occlusions or embolisms from vessels with an inflammatory process.
Ricardo de Carvalho Nogueira, Edson Bor-Seng-Shu, Paulo Eurípedes Marchiori, Manoel Jacobsen Teixeira   +3 more
doaj   +1 more source

Ventilatory and cerebrovascular responses to exercise in lowlander children acclimatizing to high‐altitude

The Journal of Physiology, EarlyView.
Abstract figure legend To investigate age‐related differences in ventilatory and cerebrovascular responses to exercise at high‐altitude, adults (n = 10, 23–44 years) and children (n = 8, 7–14 years) completed progressive cycling exercise tests at sea‐level and following 6 days of acclimatization at 3800 m.
J. L. Koep, M. G. Rieger, K. J. Smith, G. R. DuManoir, C. M. Tallon, D. R. Perkins, S. Piombo, M. Stembridge, D. M. Cooper, S. Radom‐Aizik, P. N. Ainslie, A. M. McManus   +11 more
wiley   +1 more source

Role of Transcranial Doppler Ultrasound in diagnosis of pediatric sepsis [PDF]

Zagazig University Medical Journal
Background: Systemic inflammatory response syndrome (SIRS) is a systemic illness brought on by an infectious pathogen entering the body and causing production of inflammatory mediators. The purpose of this study was to investigate the use of transcranial
Mohamed Abdellatif, Nehad Karam, Walaa Mahfouz, Basma Soliman   +3 more
doaj   +1 more source

Scaling temporal resolution from mice to humans: Challenges and innovations in preclinical imaging of translational models

The Journal of Physiology, EarlyView.
Abstract figure legend Temporal scaling physiology differs significantly between mice and humans. Mice have higher metabolism, heart and respiratory rate, as well as faster blood flow rates, brain activity and physiological dynamics over time. These differences influence the temporal resolution needed in preclinical imaging of mouse models to ...
Sara Gargiulo, Matteo Gramanzini
wiley   +1 more source