Results 101 to 110 of about 16,999 (208)

Effect of optimal operator positioning on transcranial Doppler acquisition: a randomized controlled trial

Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
Background Ergonomic conditions during ultrasound procedures may influence both acquisition time and image quality. In transcranial Doppler, positioning at the patient’s head could improve operator comfort and performance.
Théophile Vieux, Tatiana Randriamandimby, Roger Kadji Kalabang, Jérôme Bokobza, Rémi Girerd, Tomislav Petrovic, Frédéric Lapostolle   +6 more
doaj   +1 more source

The Range of Examinations and Roles Performed by Sonographers in Australia and New Zealand: What Does It Mean for a Profession‐Based Career Framework?

Sonography, Volume 13, Issue 3, September 2026.
ABSTRACT Introduction Many sonographers in Australia and New Zealand (ANZ) do not work within an institutional career framework, have no or limited progression opportunities, or are unsure how to progress their careers. This may limit professional growth and advancement.
Kerry Thoirs, Paula Kinnane
wiley   +1 more source

Validation of Aortic Blood Flow Simulations During Extracorporeal Circulation Using Phase Contrast Magnetic Resonance Imaging

Artificial Organs, Volume 50, Issue 9, Page 1217-1227, September 2026.
This is the first study assessing in vivo blood flow profiles during extracorporeal circulation (ECC) scenarios. Magnetic resonance imaging data served for the calibration of computational fluid dynamics algorithms, enabling accurate replication of the hemodynamic conditions.
Anna Kathrin Assmann, Sinje Reimers, Jonah S. Schrauder, Lei Qu, Xiangge Yin, Amir Moussavi, Artur Lichtenberg, Susann Boretius, Michael Neidlin, Alexander Assmann   +9 more
wiley   +1 more source

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

Experimental Physiology, Volume 111, Issue 9, Page 3968-3982, 1 September 2026.
Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr, Philip N. Ainslie, Trevor Day   +2 more
wiley   +1 more source

Effects of the angle of head‐down tilt on dynamic cerebral autoregulation during combined exposure to cephalad fluid shift and mild hypercapnia

Experimental Physiology, Volume 111, Issue 9, Page 4115-4125, 1 September 2026.
Abstract Astronauts experience combined exposure to a cephalad fluid shift and mild hypercapnia during space missions, potentially contributing to health problems. Such combined exposure may weaken dynamic cerebral autoregulation. The magnitude of cephalad fluid shift varies between individuals, and dynamic cerebral autoregulation may be affected more ...
Tomokazu Kato, Yojiro Ogawa, Ken‐ichi Iwasaki   +2 more
wiley   +1 more source

Regional changes in cerebral blood flow between the upright and supine posture and over 3 days of bed rest

Experimental Physiology, Volume 111, Issue 9, Page 4223-4234, 1 September 2026.
Abstract A reduction in cerebral blood flow (CBF) has been observed during spaceflight and bed rest. We aimed to examine the magnitude and regional heterogeneity of the decrease in CBF during bed rest compared to posture changes on Earth. Seventeen participants (age, 29 ± 9 years, 7 females) were studied in the upright and supine posture and over 3 ...
Carmen Possnig, Kyohei Marume, Gautam Babu, Sylvan L. J. E. Janssen, Christopher M. Hearon Jr, Katrin A. Dias, Satyam Sarma, Justin S. Lawley, Benjamin D. Levine   +8 more
wiley   +1 more source

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, Volume 111, Issue 9, Page 4235-4247, 1 September 2026.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source

Translational perspectives on neurophysiological responses and mechanisms in blood flow restriction exercise

Experimental Physiology, Volume 111, Issue 9, Page 4054-4063, 1 September 2026.
Abstract Maintaining corticospinal tract function is crucial for voluntary movement. Exercise using high external loads/intensities is a promising intervention to promote adaptations to the corticospinal tract and improve physical function; however, such loads/intensities may not be tolerable or safe in populations with neurological disorders, motor ...
Kai T. Fox, Luke Hughes, Brendan R. Scott, Paul S. R. Goods, Shaun YM. Teo, Ann‐Maree Vallence   +5 more
wiley   +1 more source

Transcranial Doppler Ultrasound Velocity Measurements in Children With Sickle Cell Disease in Kenya. [PDF]

EJHaem
Mwalimu C, Odhiambo O, Mashisia E, Mwanja T, Ade A, De Vita MV, Oyieke K, Samia P, Kirkham F, Gwer S.   +9 more
europepmc   +1 more source

Point-of-Care Transcranial Doppler Sonography at the Intensive Care Unit-A Practical Review of the Fundamentals. [PDF]

J Clin Med
Siró P, Fülesdi Z, Molnár C, Almási R, Csiba L, Fülesdi B.   +5 more
europepmc   +1 more source