Results 211 to 220 of about 362,342 (293)

Physiological Interpretation of the Lactate to Pyruvate AUC Ratio for Hyperpolarized [1‐13C]‐Pyruvate Studies

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To explore the relationship between potentially rate‐limiting steps in lactate production and the lactate area‐under‐the‐curve (AUC) to pyruvate AUC ratio for analysis of hyperpolarized (HP) [1‐13C]‐pyruvate data. Theory and Methods Simplifying assumptions are introduced to a pharmacokinetic (PK) model with three physical compartments ...
Ryan T. Boyce, Collin J. Harlan, Qing Wang, Christopher M. Walker, Stephen Y. Lai, Matthew E. Merritt, James A. Bankson   +6 more
wiley   +1 more source

Unilateral common carotid artery agenesis: Case report of a rare incidental finding. [PDF]

Radiol Case Rep
Medarametla A, Abebe AT, Tantawi M, Taweel AA.   +3 more
europepmc   +1 more source

Respiration Can Trigger Cerebrovascular Reactivity: A Novel Method to Quantify Cerebrovascular Resistance Dynamics Using Real‐Time Phase‐Contrast MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To directly quantify respiration‐driven cerebrovascular resistance dynamics (CRD) using a gas‐free MRI framework based on the internal‐to‐external artery carotid flow ratio (ratio_Q). Theory and Methods Two independent datasets (n = 10 and n = 17) were used to evaluate repeatability and to compare breathing conditions.
Pan Liu, Qiuting Wen, Kimi Owashi, Jean‐Marc Constans, Cyrille Capel, Olivier Balédent   +5 more
wiley   +1 more source

Carotid Artery Stenting Outcomes in Comprehensive Stroke Hospitals (CASSH): A Prospective Multicenter Study. [PDF]

Stroke Vasc Interv Neurol
Ezzeldin M, Hassan AE, Ezzeldin R, Adachi K, Soliman Y, Alshekhlee A, Hussain MS, Niazi M, Sheriff F, Bushnaq S, Asif K, Tanweer O, Alaraj A, Grandhi R, Janjua N, Vela-Duarte D, Chaubal V, Al Matairi A, Mir O, Mealer L, Ezepue C, AlMajali M, Chaudhari A, Martucci M, Abdulrazzak MA, Maud A, Rodriguez G, Miller S, Quispe-Orozco D, Suppakitjanusant P, Froukh M, Bains N, Bhatti I, Xu J, Abou-Mrad T, Salah W, Shoraka O, Ali Z, Zaidat O, Siddiq F.   +39 more
europepmc   +1 more source

Changes in velocity profiles in a two dimensional carotid artery geometry in response to changes in velocity waveforms and a simulated stenosis growth:a lattice Boltzmann simulation [PDF]

, 2007
Boyd, J., Buick, James
core  

Motion‐Compensated Diffusion Imaging With Phase‐Contrast for Robust Quantification of Regional Cerebral Blood Flow

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop and evaluate a motion‐compensated diffusion imaging with phase‐contrast (MC‐DIP) technique for mitigating errors in regional cerebral blood flow (rCBF) quantification caused by physiological brain motion. Methods Diffusion‐weighted images were acquired in 11 healthy volunteers on a 3.0 T MRI system using three gradient ...
Naoki Ohno, Tosiaki Miyati, Genki Nambu, Yu Ueda, Yuki Makino, Noam Alperin, Satoshi Kobayashi   +6 more
wiley   +1 more source

Hemodynamics in carotid artery stenosis. [PDF]

Int Angiol
Ho BB, Lazcano-Etchebarne C, Schwartz A, Bai H, Ohashi Y, Dardik A.   +5 more
europepmc   +1 more source

Low‐Cost and Detunable Wireless Resonator Glasses for Enhanced Eye MRI With Concurrent High‐Quality Whole‐Brain MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT PurposeTo develop a wearable wireless resonator glasses design that enhances eye MRI signal‐to‐noise ratio (SNR) without compromising whole‐brain image quality at 7 T. MethodsThe device integrates two detunable LC loop resonators into a lightweight, 3D‐printed frame positioned near the eyes.
Ming Lu, Xiaoyue Yang, Jason E. Moore, Pingping Li, Adam W. Anderson, John C. Gore, Seth A. Smith, Xinqiang Yan   +7 more
wiley   +1 more source

Beyond the Headache: A Subtle Horner's Syndrome Revealing Carotid Artery Dissection. [PDF]

Cureus
Sankar S, Ojewuyi T, Siddabathula A, Mahar N, Narayanan P, Ali M.   +5 more
europepmc   +1 more source

On the Origin of the Brain Semi‐Heavy Water Deuterium MR Signal Following Administration of Deuterated Metabolic Substrate: A Cautionary Tale

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To evaluate the extent to which the appearance of HOD in the brain following systemic administration of a deuterated substrate is due to local brain metabolism versus body metabolism. Methods [6,6‐2H2]glucose, which is transported across the blood‐brain barrier (BBB), and [6,6‐2H2]fructose (Fruc), which does not cross the BBB, were ...
Joseph J. H. Ackerman, Xia Ge, Nick Rensing, Jeffrey J. Neil, Liu Lin Thio, Joel R. Garbow   +5 more
wiley   +1 more source