Results 71 to 80 of about 4,106,222 (239)

Disturbed correlation between arterial resistance and pulsatility in glaucoma patients [PDF]

, 2012
(i) To investigate whether pulsatility index (PI) and mean flow velocities (MFV) are altered in glaucoma patients.
Abegão Pinto, L, Vandewalle, E, Abegão Pinto, Luís, Vandewalle, Evelien, Stalmans, I, Stalmans, Ingeborg   +5 more
core   +1 more source

Whole‐Brain Cerebral Microvascular Pulsatility Imaging Using Dynamic pCASL MRI With Segmented Stack‐of‐Stars Golden‐Angle Radial Acquisition

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To develop an efficient dynamic pseudo‐continuous arterial spin labeling (pCASL) MRI technique for whole‐brain microvascular flow pulsatility imaging. Methods The proposed technique combines pCASL with a segmented stack‐of‐stars golden‐angle radial acquisition.
Tianrui Zhao, Jianing Tang, Yining He, Dilip K. Pandey, Philip B. Gorelick, Lirong Yan   +5 more
wiley   +1 more source

Diagnostic utility of transit time flow measurement for predicting early coronary bypass graft occlusion

JTCVS Open
Objective: The study objective was to evaluate the predictive value of intraoperative graft flow and pulsatility index for early in-hospital graft occlusion.
Rosa Kolb, MD, Islam Salikhanov, MD, PhD, Brian M. Mawad, MD, Luise Voehringer, MD, Ion Vasiloi, MD, Saskia Rabe, MD, Brigitta Gahl, PhD, Christian Mueller, MD, Denis Berdajs, MD   +8 more
doaj   +1 more source

Most Small Cerebral Cortical Veins Demonstrate Significant Flow Pulsatility: A Human Phase Contrast MRI Study at 7T

Frontiers in Neuroscience, 2020
Phase contrast MRI (pcMRI) has been used to investigate flow pulsatility in cerebral arteries, larger cerebral veins, and the cerebrospinal fluid (CSF). Such measurements of intracranial pulsatility and compliance are beginning to inform understanding of
Ian D. Driver, Maarika Traat, Maarika Traat, Fabrizio Fasano, Richard G. Wise, Richard G. Wise, Richard G. Wise   +6 more
doaj   +1 more source

Independent Component Analysis for Non‐Contrast‐Enhanced Free‐Breathing Pulmonary Ventilation and Perfusion MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose To introduce a robust approach for non‐contrast‐enhanced free‐breathing functional lung MRI based on independent component analysis (ICA), addressing key limitations of standard methods such as sensitivity to irregular breathing or irregular heartbeat.
Laura Rozo Pardo, Rabea Klaar, Enrico Schulz, Moritz Rabe, Christopher Kurz, Guillaume Landry, Jens Ricke, Bastian Sabel, Olaf Dietrich   +8 more
wiley   +1 more source

Clinical evaluation of blood flow in femoral head necrosis using color doppler ultrasound

Scientific Reports
This study aims to utilize Color Doppler Ultrasound to collect blood flow parameters of the medial circumflex femoral artery and explore the changes in blood flow in osteonecrosis of the femoral head, providing objective indicators for clinical ...
Tong-jie Yang, Yan Li, Peng-peng Wen, Zi-xuan Wu, Xin Ye, Cheng Zhang, Shi-yi Sun, Guang-yi Zhang, Yi-fei Sun, Cheng-kun Zhou, Ren Ye, Hai-jun He   +11 more
doaj   +1 more source

Investigating the dynamics of intracranial pressure and cerebral autoregulation during extracorporeal cardiopulmonary resuscitation using a porcine model

Resuscitation Plus
Background: Extracorporeal cardiopulmonary resuscitation (ECPR) has emerged as a promising intervention for refractory cardiac arrest, with potential benefits in survival and neurological outcomes.
Tito Porras, Mingfeng Cao, Jessica Briscoe, Jin Kook Kang, Ifeanyi David Chinedozi, Zachary Darby, Shivalika Khanduja, Anastasios Bezerianos, Nitish Thakor, Glenn Whitman, Debraj Mukherjee, Steve Keller, Sung-Min Cho   +12 more
doaj   +1 more source

Increased renal pulsatility index and resistivity index in ob/ob mice at 21 weeks of age.

, 2015
Renal flow velocity was measured in lean (n = 11) and leptin-deficient (ob/ob, n = 10) mice at 21 weeks of age using the ultrasound color Doppler technique. A: Renal pulsatility index, B: Renal resistivity index.
Helena U. Westergren (758365), Li-Ming Gan (367011), Anette Ericsson (671378), Karin Jennbacken (758369), Ann-Cathrine Jönsson-Rylander (638589), Sara Svedlund (758371), Tasso Miliotis (758368), Julia Grönros (758366), Suvi E. Heinonen (758367), Alan Sabirsh (758370)   +9 more
core   +1 more source

Genetic Investigation in Fetal Growth Restriction: An Integrated Approach for Clinical Practice

Prenatal Diagnosis, EarlyView.
ABSTRACT International guidelines recommend genetic testing when fetal growth restriction (FGR) accompanies structural anomalies, but recommendations for apparently isolated FGR remain variable, particularly regarding gestational age thresholds and the role of exome sequencing (ES). Interpretation is difficult because studies define FGR inconsistently,
Eran Ashwal, David Chitayat
wiley   +1 more source

Cardiovascular and Hemodynamic Adaptations in Selective Fetal Growth Restriction: A Cohort Study of Monochorionic Twins

Prenatal Diagnosis, EarlyView.
ABSTRACT Objective In monochorionic diamniotic twins with selective fetal growth restriction (sFGR), the Gratacós type is defined by one vessel in one fetus. We asked how much cerebral, venous and myocardial divergence between co‐twins it captures. Method Single‐center combined retrospective–prospective cohort; one diagnostic examination per pregnancy.
Tanchanok Auwattanamongkol, Nisarat Phithakwatchara, Katika Nawapun, Sommai Viboonchart, Suparat Jaingam, Kanokwaroon Watananirun, Sriwipa Kaewsrinual, Tuangsit Wataganara   +7 more
wiley   +1 more source