Effect of physical activity on MRI-measured blood oxygen level-dependent transients in skeletal muscle after brief contractions

TF Towse, JM Slade, RA Meyer - Journal of applied …, 2005 - journals.physiology.org
The signal intensity (SI) in gradient-echo, echo-planar magnetic resonance images
(repetition time/echo time= 1,000/40) of anterior tibialis muscle in active [estimated energy …

Diffusion‐weighted spin‐echo fMRI at 9.4 T: microvascular/tissue contribution to BOLD signal changes

SP Lee, AC Silva, K Ugurbil… - Magnetic Resonance in …, 1999 - Wiley Online Library
The nature of vascular contribution to blood oxygenation level dependent (BOLD) contrast
used in functional MRI (fMRI) is poorly understood. To investigate vascular contributions at …

A preliminary study of blood-oxygen-level-dependent MRI in patients with chronic kidney disease

P Xin-Long, X Jing-Xia, L Jian-Yu, W Song… - Magnetic resonance …, 2012 - Elsevier
BACKGROUND: Blood-oxygen-level-dependent (BOLD) magnetic resonance imaging (MRI)
can provide regional measurements of oxygen content using deoxyhemoglobin …

Technical considerations on the validity of blood oxygenation level‐dependent‐based MR assessment of vascular deoxygenation

NM Hirsch, V Toth, A Förschler, H Kooijman… - NMR in …, 2014 - Wiley Online Library
A blood oxygenation level‐dependent (BOLD)‐based apparent relative oxygen extraction
fraction (rOEF) as a semi‐quantitative marker of vascular deoxygenation has recently been …

Attenuated myocardial vasodilator response in patients with hypertensive hypertrophy revealed by oxygenation-dependent magnetic resonance imaging

GM Beache, DA Herzka, JL Boxerman, WS Post… - Circulation, 2001 - Am Heart Assoc
Background Oxygen (O2) homeostasis is central to myocardial tissue functioning, and
increased O2 demand is thought to be satisfied by a vasodilatory mechanism that results in …

Non‐invasive monitoring of renal oxygenation using BOLD‐MRI: a reproducibility study

SC Simon‐Zoula, L Hofmann, A Giger… - NMR in Biomedicine …, 2006 - Wiley Online Library
Blood oxygenation level‐dependent (BOLD) MRI was shown to allow non‐invasive
observation of renal oxygenation in humans. However, clinical applications of this type of …

Post‐occlusion brachial artery vasodilatation after ischaemic handgrip exercise is nitric oxide mediated

S Agewall, J Hulthe, B Fagerberg… - Clinical Physiology …, 2002 - Wiley Online Library
Flow‐mediated vasodilatation (FMD) of the brachial artery is used as a measure to quantify
endothelial dysfunction. However, FMD after occlusion only is small in healthy people over …

Experimental measurement of extravascular parenchymal BOLD effects and tissue oxygen extraction fractions using multi‐echo VASO fMRI at 1.5 and 3.0 T

H Lu, PCM Van Zijl - … in Medicine: An Official Journal of the …, 2005 - Wiley Online Library
Quantitative interpretation of BOLD fMRI signal changes has predominantly employed
empirical models for the whole parenchyma and a calibration step is usually needed to …

[HTML][HTML] Phosphorus 31 nuclear magnetic resonance spectroscopy suggests a mitochondrial defect in claudicating skeletal muscle

II Pipinos, AD Shepard, PV Anagnostopoulos… - Journal of vascular …, 2000 - Elsevier
Objective: Decreased oxygen supply is generally accepted as the primary cause of muscle
dysfunction in patients with peripheral arterial occlusive disease (PAOD) and intermittent …

How to assess post-occlusive reactive hyperaemia by means of laser Doppler perfusion monitoring: application of a standardised protocol to patients with peripheral …

F Morales, R Graaff, AJ Smit, S Bertuglia… - Microvascular …, 2005 - Elsevier
The standardisation of manoeuvres to perform clinically discriminative microvascular flow
reserve tests is still poorly developed, as well as the response analysis. The aim of this study …