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In vivo measurement of changes in venous blood-oxygenation with
High-resolution functional imaging experiments at 0.95 Tesla have been performed to .... In Vivo Measurement of Blood Oxygenation Changes during fMRl. 99.
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Measurement of tissue oxygen extraction ratios from venous blood
Venous Blood T2: Increased Precision and. Validation of ... rectly relate OER to T2 of venous blood in vivo. Using an ... cently demonstrated that macrovascular signal changes ... blood oxygenation by measuring intravascular T2 (9,10),. T*2 ( 4 ...
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In vivo monitoring of blood oxygenation in large veins with a triple
Optoacoustic signals induced in venous blood were measured with high ..... oxygenation in the EJV and in changes in the optoacoustic signal amplitudes at 700 ...
[ 542196fd0cf26120b79e258e.pdf - Read/Download File

In Vivo MR Measurements of Regional Arterial and Venous Blood
In vivo measurement of cerebral arterial and venous volume fractions is important to ... short T1 (high-oxygenation) component with the fast-moving component and the ..... without changing the arterial blood gas pCO2. The arterial blood gas ...
[ Duong_Kim.pdf - Read/Download File

In Vivo Measurement of Oxygen Concentration Using
oxygen because of the higher solubility of oxygen in organic solvents. The encapsulation also ... Measurement of the changes in oxygen concentration in vivo by means of restriction of blood flow, anesthesia, and change of oxygen content in the respired gas were made using these microspheres. .... through the tail vein.
[ biophysj94896.pdf - Read/Download File

Postacquisition suppression of large-vessel BOLD signals in high
Large-vessel BOLD contamination is a serious impediment to localization ...... Sprenger M. In vivo measurement of changes in venous blood-oxygen- ation with  ...
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Discrimination of Large Venous Vessels in Time-Course Spiral
A technique is described for discriminating blood-oxygen- level-dependent ( BOLD) signal changes originating from large venous vessels and those that arise  ...
[ ATLee_discr_vessels.pdf - Read/Download File

Estimating oxygen saturation of blood in vivo with MR imaging at 1.5 T
particularly for venous blood, although difficul- ties arise in ... vivo measurements by comparison with direct measurements of .... cally with Bo and therefore favoring the use of high- ... reflect relatively small changes in %HbO2. A second ...
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In Vivo Measurement of Oxygenation Changes after Stroke - Plos
May 13, 2013 ... phase values differences (DQ) measured over 10 veins from each ... blocking of blood vessels, reduced oxygen delivery and increased.
[ journal.pone.0063013.PDF - Read/Download File

Full Text (PDF)
blood oxygen changes induced by anesthetics, by insulin- induced hypoglycemia ... BOLD contrast can be used to provide in vivo real-time maps of blood oxygenation .... Measurement of Blood Flow Velocity and Effect of Blood. Oxygenation on .... of BOLD contrast and the high venous bloodoxygenation level measured at ...
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Imaging Brain Oxygenation with MRI Using Blood Oxygenation
Aug 2, 2012 ... Furthermore, oxygenation changes following a stress challenge, such as with carbogen gas or acetazolamide, can ... curate measurements of pO2 in vivo.9 Yet it provides only local ... MR imaging is noninvasive and can be performed with high .... fully oxygenated arterial blood, the values that are derived.
[ ajnr.A3070.full.pdf - Read/Download File

A haemodynamic model for the physiological interpretation of in vivo
Sep 5, 2002 ... induced by brain activity, measurement of arterial saturation by pulse oximetry ... blood oxygenation in vivo are the result of the interplay among a number of physiological ... that determine a higher or lower sensitivity of the concentration and .... V and Lbv (caused for instance by changes in the tissue optical ...
[ 5_Phys_Med_Biol_47_N249_2002.pdf - Read/Download File

Functional brain mapping by blood oxygenation level-dependent
oxygenation of the venous blood, the venous blood volume fraction in the tissue, and the size of the blood vessel. ... the magnitude ofthe observed signal changes is presently ...... blood vessels at high fields: in vivo and in vitro measurements.
[ biophysj00090-0233.pdf - Read/Download File

Intrinsic signal changes accompanying sensory stimulation
Magnetic-resonance imaging (MRI) of rodent brains at high. (7-T) magnetic-field ... be used to measure in vivo changes in hemodynamics. For example ... that a local elevation in human-brain venous-blood oxygenation accompanies an in-.
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Comparison of the dependence of blood R2 and R 2* on oxygen
R2 and R*2, of isolated blood were measured as a function of oxygenation in a perfusion system. Over the normal oxygen- ation saturation range of blood between veins, capillaries, and arteries, the ... those of multi-GRE in vivo imaging and phantom studies ... and GRE BOLD changes inside large vessels at two field.
[ silvennoinen_et_al-2003-magnetic_resonance_in_medicine.pdf - Read/Download File

Download as a PDF - CiteSeerX
Key words: BOLD fMRI; multi-compartment; in vivo modeling; extravascular dephasing; fMRI model. The change of the oxygenation level of venous blood is the cornerstone of blood .... measured with in vitro samples (9), and subsequently in vivo with SE ..... signal changes at large TE can also be appreciated in Fig. 5,.
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Sub-millimeter fMRI at 1.5 Tesla: Correlation of High Resolution With
K, Sprenger M. In vivo measurement of changes in venous blood- oxygenation with high resolution functional MRI at 0.95 tesla by measuring changes in ...
[ Sub_millimeter_fMRI_at_1_5_Tesla__Correlation_of_.pdf?paperid=2358965 - Read/Download File

The Role of De-oxygenated Venous Blood in Observing Brain
difference between venous blood and the surrounding tissue is used to generate contrast. ... tumors with high resolution MR images in order to ... ability of MR gradient echo imaging to detect changes ..... In vivo measurement of blood oxygen ...
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SWI Basics, Applications and Pitfalls - ismrm
Susceptibility-weighted imaging (SWI) is a high spatial resolution, .... Haacke EM, Lai S, Kuppusamy K, Sprenger M. In vivo measurement of changes in venous blood-oxygenation with high resolution functional MRI at 0.95 Tesla by measuring.
[ Mon C03_01 Reichenbach.pdf - Read/Download File

pulse oximetry - medIND
... to continuously measure blood oxygen saturation in vivo by transilluminating tissue. ... measures pulsatile changes in arterial blood volume at the sensor site).
[ iadt02i4p261.pdf - Read/Download File

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