Search Results - "HALSEY, J. H"

Effect of emitted power on waveform intensity in transcranial doppler by HALSEY, J. H

“…This study assesses the problem of transcranial Doppler recording failure and seeks to determine the extent to which this can be ameliorated by increased…”
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Prognosis of acute hemiplegia estimated by transcranial Doppler ultrasonography by HALSEY, J. H. JR

“…Blood velocity in the middle cerebral artery was measured by transcranial Doppler ultrasonography in 15 patients suffering complete hemiplegia of less than 12…”
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The contribution of reoxygenation to ischemic brain damage by Halsey, Jr, J H, Conger, K A, Garcia, J H, Sarvary, E

“…This study examined the hypothesis that the level of postischemic reperfusion affects the severity of the resulting neuronal necrosis. In rats, tissue PO2% was…”
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Risks and benefits of shunting in carotid endarterectomy. The International Transcranial Doppler Collaborators by Halsey, Jr, J H

“…Controversy continues about the pathogenesis of perioperative stroke in carotid endarterectomy and the use of shunting. The purpose of this study was to…”
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Risks and benefits of shunting in carotid endarterectomy by HALSEY, J. H

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Comparisons of oxygen metabolism and tissue Po2 in cortex and hippocampus of gerbil brain by NAIR, P. K, BUERK, D. G, HALSEY, J. H. JR

“…Recessed oxygen microelectrodes (tip diameter less than 2 microns) were positioned stereotactically into either the cerebral cortex or the hippocampus of…”
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The hemodynamic effect of STA-MCA bypass by Halsey, Jr, J H, Morawetz, R B, Blauenstein, U W

“…rCBF was measured by 133Xenon inhalation at rest and during pCO2 manipulation in 19 patients prior to and at various times after STA-MCA bypass surgery. The…”
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Pressure distribution in the pial arterial system of rats based on morphometric data and mathematical models by Hudetz, A G, Conger, K A, Halsey, Jr, J H, Pal, M, Dohan, O, Kovach, A G

“…The objective of the present work was a theoretical evaluation of pial arterial pressures in normotensive rats and spontaneously hypertensive rats based on the…”
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Transient focal ischemia in subhuman primates. Neuronal injury as a function of local cerebral blood flow by Garcia, J H, Mitchem, H L, Briggs, L, Morawetz, R, Hudetz, A G, Hazelrig, J B, Halsey, Jr, J H, Conger, K A

“…Unilateral, transient (30, 60, and 120 minutes (min)) middle-cerebral-artery (MCA) occlusion was induced via transorbital craniotomy in 11 waking subhuman…”
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Regional cerebral blood flow for singers and nonsingers while speaking, singing, and humming a rote passage by Formby, C, Thomas, R G, Halsey, Jr, J H

“…Two groups of singers (n = 12,13) and a group of nonsingers (n = 12) each produced the national anthem by (1) speaking and (2) singing the words and by (3)…”
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Transcranial Doppler and rCBF compared in carotid endarterectomy by HALSEY, J. H, MCDOWELL, H. A, GELMAN, S

“…In eight patients undergoing carotid endarterectomy, the mean velocity and an index of pulse amplitude in the middle cerebral artery were monitored…”
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Differential regional vulnerability in transient focal cerebral ischemia by Marcoux, F W, Morawetz, R B, Crowell, R M, DeGirolami, U, Halsey, Jr, J H

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Correlation of cerebral blood flow and EEG during carotid occlusion for endarterectomy (without shunting) and neurologic outcome by Morawetz, R B, Zeiger, H E, McDowell, Jr, H A, McKay, R D, Varner, P D, Gelman, S, Halsey, J H

“…One hundred twenty-nine consecutive carotid endarterectomies performed for atherosclerotic ulcerative stenosis without the use of intraoperative shunting were…”
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Focal right temporo-occipital blood flow changes associated with judgment of line orientation by Hannay, H J, Falgout, J C, Leli, D A, Katholi, C R, Halsey, Jr, J H, Wills, E L

“…Focal cerebral blood flow changes for judgment of line orientation were determined using the 133Xe inhalation technique with 18 normal right-handed male…”
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Mathematical simulation of cerebral blood flow in focal ischemia by Hudetz, A G, Halsey, Jr, J H, Horton, C R, Conger, K A, Reneau, D D

“…A computer model was developed to describe regional cerebral blood flow and tissue oxygenation with autoregulation during focal ischemia produced by occlusion…”
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Progressive lacunar infarction with demonstrated patency of the middle cerebral artery by HALSEY, J. H

“…Two cases of progressive hemiplegia were closely followed by daily clinical examination. In both, the CT scan and CSF were normal on admission. In both,…”
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Sensitivity of rCBF to focal lesions by Halsey, Jr, J H, Nakai, K, Wariyar, B

“…The ability of the 133Xenon inhalation method to lateralize cerebral infarctions visible on CT scan was tested in 39 patients. At each of 7 hemispheric regions…”
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A mathematical model of the intracerebral steal phenomenon in regional and focal ischaemia by Hudetz, A G, Conger, K A, Eke, A, Halsey, Jr, J H

“…The objective of the present work was to mathematically estimate the extent and dynamics of intracerebral steal which may occur in response to cerebral…”
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Comparison of external lung monitoring with end-tidal air detection using the 133xenon inhalation method by HAZELRIG, J. B, HALSEY, J. H. JR, WILSON, E. M, WILLS, E. L

“…When the 133Xe inhalation method is employed for measuring regional cerebral blood flow, the arterial 133Xe concentration is usually approximated by the…”
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Biological and neuropsychological characterization of physostigmine responders and nonresponders in Alzheimer's disease by Harrell, L E, Jope, R S, Falgout, J, Callaway, R, Avery, C, Spiers, M, Leli, D, Morere, D, Halsey, Jr, J H

“…To assess the efficacy of oral physostigmine for the treatment of Alzheimer's disease, 20 patients were entered into a clinical trial. All patients underwent a…”
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