cerebral blood flow quantification
Cerebral blood flow quantification in the rat: a direct comparison of arterial spin labeling MRI with radioactive microsphere PET
... spheres due to the limited radioactive half-life of this isotope. MR imaging was performed first for animals injected with 64 Cu-labeled microspheres. After the com- pletion of all measurements (PET, MRI), the animal was ...
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Quantification of Cerebral Blood Flow and Oxidative Metabolism in Infants with Post-Hemorrhagic Ventricular Dilatation
... a flow tracer is diffuse correlation spectroscopy (DCS), 88–90 which is sensitive to blood flow due to the temporal signal fluctuations, known as speckle, caused by the movement of red blood ...
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Internal carotid balloon test occlusion does require quantitative CBF
... Reply We agree with Yonas et al that quantification of regional cerebral blood flow rCBF probably would increase the specificity of Tc-99m HMPAO cerebral perfusion SPECT and internal car[r] ...
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Increased hemorrhagic transformation and altered infarct size and localization after experimental stroke in a rat model type 2 diabetes
... increases cerebral injury by the development of vasogenic edema and secondary hemorrhage known as HT ...focal cerebral ischemia and contributes to the development of HT ...
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Effect of propofol and remifentanil on cerebral perfusion and oxygenation in pigs: a systematic review
... on cerebral perfusion and oxygenation in healthy ...on cerebral haemodynamics and it is important not only in human but also in veterinary anaesthesia to preserve optimal regulation of cerebral ...
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Model estimation of cerebral hemodynamics between blood flow and volume changes: a data-based modelling approach
... between cerebral blood flow (CBF) and cerebral blood volume (CBV) (Grubb et ...the blood oxygen level dependent (BOLD) signal plays a key role, it is becoming increasing ...
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Dynamic Assessment of Cerebral Metabolic Rate of Oxygen (cmro2) With Magnetic Resonance Imaging
... apnea maintains cerebral oxygen delivery via reduced cardiac output, peripheral vasoconstriction, and cerebral vasodilation (131). However, it has been suggested that in OSA the repeated nocturnal apneic ...
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Neurogenic diabetes insipidus presenting in a patient with subacute liver failure: a case report
... After the patient was listed for urgent liver transplant, a retrograde jugular bulb catheter was inserted into the patient to monitor his jugular venous oxygen saturation and to optimize cerebral perfusion ...
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Functional echocardiography (f echo) in nicu a need for the hour a bird’s view
... neonatal echocardiography is proposed to describe the bed side use of echocardiography to longitudinally assess systematic and pulmonary blood flow, cardiac shunts, organ blood flow and et ...
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Perfusion Weighted MR Imaging Studies in Brain Hypervascular Diseases: Comparison of Arterial Input Function Extractions for Perfusion Measurement
... In our study, we paid special atten- tion to avoid PWI measurement sites aliased by magnetic susceptibility arti- facts, as well as the venous partial vol- ume effect from abnormal arterio- venous shunt veins. We tried ...
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Effects of chronic hypertension and acute cerebral ischemia on blood-brain barrier permeability, brain water content, and cerebral blood volume using MRI
... Before the BBB breakdown, there was no water content increase. The disruption of BBB is believed to result from high blood pressure at around 200 mmHg 152 . The edema developed as vasogenic edema since it occurred ...
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Effects of age and sex steroids on the circulation in women
... blood flow or downstream impedance to ...and blood volume after only three weeks' oestradiol valerate therapy in postmenopausal ...output, blood pressure and heart rate all ...and flow ...
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The impact of intravenous thrombolysis on outcome of patients with acute ischemic stroke after 90 years old
... Seventy -eight patients were included (Fig. 1), 35 % male, aged 91.9 ± 1.7 (mean ± SD) y.o. Demographic data are described in Table 1. 37 patients received IV-tPA. Among them, 30 patients had perfusion maps of suffi- ...
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Quantitative assessment of brain perfusion with magnetic resonance imaging
... Although both the magnitude and phase of the DSC-MrI signal can be used for AIF measure- ments (8, 9), the magnitude of the Mr signal is used most often. Voxels for the AIF are normally selected either manually (6) or ...
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Quantification of the distribution of blood flow pressure with postures
... The extreme values of the blood flow pressure varied with postures as G ≠ 0 (Figure 4). Hemodynamic vari- ables, such as SBP/DBP, are significantly different from supine values at each tilting angle [5]. ...
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A COMPARISON OF THE EFFECTS OF l NOR EPINEPHRINE, SYNTHETIC l EPINEPHRINE, AND U S P EPINEPHRINE UPON CEREBRAL BLOOD FLOW AND METABOLISM IN MAN
... The intramuscular administration of epinephrine leads to a slight reduction in mean arterial blood pressure but does not alter cerebral vascular resistance, cerebral blood flow or cerebr[r] ...
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The use of laser speckle contrast imaging in clinical applications
... An essential task in the examination of the transferred tissue is to assess the neovascularization. LSCI is a minimal-invasive method to visualize the blood flow of superficial or uncovered vasculature. ...
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Normal Pressure Hydrocephalus: New Concepts on Etiology and Diagnosis
... CSF flow void is present, the patient is con- sidered for ...on flow-compensated proton density–weighted conventional spin-echo ...CSF flow void is normal, the patient under- goes a quantitative MR ...
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Cerebral haemodynamics and carbon dioxide reactivity during sepsis syndrome
... In agreement with Panerai [18], who emphasized the neces- sity of CCP monitoring to obtain more accurate estimates of cerebrovascular resistance changes, we recorded the CCP using transcranial Doppler sonography as ...
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CEREBRAL BLOOD FLOW AND OXYGEN CONSUMPTION IN HYPERTHYROIDISM BEFORE AND AFTER TREATMENT
... Studies of cerebral blood flow, cerebral vascular resistance, and cerebral oxygen consumption, as well as mean arterial blood pressure, hemoglobin concentration, blood gases, and blood p[r] ...
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