Search Results - "Øksendal, Audun N."

Cerebrovascular changes in rats during ischemia and reperfusion: a comparison of BOLD and first pass bolus tracking techniques by Jones, R A, Müller, T B, Haraldseth, O, Baptista, A M, Oksendal, A N

“…Both first pass bolus tracking of a susceptibility contrast agent and blood oxygenation level dependent (BOLD) sequences provide information on the tissue…”
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Biodistribution and toxicity of MR imaging contrast media by Oksendal, A N, Hals, P A

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Protection by verapamil in the calcium paradox: dependence on micromolar calcium by Oksendal, A N, Jynge, P

“…Myocardial protection by verapamil in the calcium paradox has been the subject of considerable controversy. In order to reassess the protective properties of…”
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Perfusion and diffusion-weighted MR imaging for in vivo evaluation of treatment with U74389G in a rat stroke model by Müller, T B, Haraldseth, O, Jones, R A, Sebastiani, G, Lindboe, C F, Unsgård, G, Oksendal, A N

“…The present study was performed to examine the potential of diffusion-weighted (DW) imaging and dynamic first-passage bolus tracking of susceptibility contrast…”
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Contrast-enhanced 3D-TOF MRA of peripheral vessels: intravascular versus extracellular MR contrast media by Engelbrecht, M R, Saeed, M, Wendland, M F, Canet, E, Oksendal, A N, Higgins, C B

“…MR contrast media have been used to improve MR angiography (MRA). Their effect has been particularly beneficial for extracranial MRA. This study evaluated the…”
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Effect of Gd-DTPA-BMA on magnetization transfer: application to rapid imaging of cardiac ischemia by Jones, R A, Haraldseth, O, Schjøtt, J, Brurok, H, Jynge, P, Oksendal, A N, Rinck, P A

“…The addition of a paramagnetic contrast agent reduces the magnetization transfer effect between the free and restricted proton pools in both agar phantoms and…”
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Comparison of dysprosium DTPA BMA and superparamagnetic iron oxide particles as susceptibility contrast agents for perfusion imaging of regional cerebral ischemia in the rat by Haraldseth, O, Jones, R A, Müller, T B, Fahlvik, A K, Oksendal, A N

“…The aim of the study was to compare the first-passage profiles of dysprosium diethylenetriamine penta-acetic acid bis(methylamide) (DTPA BMA) and the…”
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A Study of the contribution of changes in the cerebral blood volume to the haemodynamic response to anoxia in rat brain by Jones, Richard A., Harakdseth, Olav, Baptista, António M., Müller, Tomm B., Øksendal, Audun N.

“…A susceptibility contrast agent which does not pass into the extra‐cellular space was used to study the effect of changes in the relative cerebral blood volume…”
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Contractile responses to electrolyte changes during coronary bolus perfusion. A comparative study in isolated rat, guinea pig, and rabbit hearts by Jynge, P, Blankson, H, Schjøtt, J, Holten, T, Oksendal, A N

“…The authors studied cardiac contractile responses during coronary bolus perfusion, as in coronary angiography, in three species and related the responses to…”
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Contrast-enhanced MR imaging of diffuse and focal splenic disease with use of magnetic starch microspheres by Kreft, B P, Tanimoto, A, Leffler, S, Finn, J P, Oksendal, A N, Stark, D D

“…The diagnostic value of magnetic starch microspheres (MSM), a new superparamagnetic contrast agent, was studied in experimental models of diffuse and focal…”
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A Study of the Contribution of Changes in the Cerebral Blood Volume to the Haemodynamic Response to Anoxia in Rat Brain by Jones, Richard A., Haraldseth, Olav, Baptista, António M., Müller, Tomm B., Øksendal, Audun N.

“…A susceptibility contrast agent which does not pass into the extra‐cellular space was used to study the effect of changes in the relative cerebral blood volume…”
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Early detection of regional myocardial ischemia in ex vivo piglet hearts: MR imaging with magnetization transfer by Haraldseth, O, Jones, R A, Schjøtt, J, Rinck, P A, Jynge, P, Oksendal, A N

“…The effects of regional myocardial ischemia and reperfusion on magnetization transfer (MT) contrast were investigated in an ex vivo perfused piglet heart…”
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Dy-DTPA-BMA as an indicator of tissue viability in MR imaging. An experimental study in the pig by Nilsson, S, Wikström, M, Martinussen, H J, Ericsson, A, Wikström, G, Waldenström, A, Oksendal, A N, Hemmingsson, A

“…The aim of this study was to investigate whether dysprosium (Dy) induced signal intensity (SI) loss in infarcted tissue in MR imaging. Myocardial infarction…”
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Superparamagnetic particles as an oral contrast agent in abdominal magnetic resonance imaging by Oksendal, A N, Jacobsen, T F, Gundersen, H G, Rinck, P A, Rummeny, E

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The calcium paradox phenomenon: a flow rate and volume response study of calcium-free perfusion by Oksendal, A N, Jynge, P, Sellevold, O F, Rotevatn, S, Saetersdal, T

“…A dose-response study concerning the importance of the flow rate (0.5 to 12 ml/min) and volume (2.5 to 60 ml) of calcium-free coronary perfusion (duration 5…”
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Acute extracellular magnesium deficiency and myocardial tolerance to ischemia by Borchgrevink, P C, Oksendal, A N, Jynge, P

“…The present study was undertaken in order to assess the effects of an acute and purely extracellular depletion of Mg during subtotal global ischemia and/or…”
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