AnatomyOrganismsDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPhenomena and ProcessesDisciplines and OccupationsInformation ScienceNamed GroupsHealth Care
Regional Blood FlowMicrospheresBlood Flow VelocityCardiac OutputCerebrovascular CirculationHemodynamicsBlood CirculationVascular ResistanceDogsCoronary CirculationSplanchnic CirculationBlood PressureScandiumRenal CirculationLiver CirculationPulmonary CirculationLaser-Doppler FlowmetryXenon RadioisotopesHeart RateOxygenAnesthesiaBlood Gas AnalysisRadioisotopesOxygen ConsumptionTomography, Emission-ComputedNitrogen RadioisotopesNafronylOxygen RadioisotopesBrainPhentolamineVentilation-Perfusion RatioKidneySwineCarbon DioxideTime FactorsHindlimbMicrocirculationOrganotechnetium CompoundsPartial PressureModels, CardiovascularBlood VolumeImmersionVasoconstrictionIliac ArteryIschemiaPulmonary Gas ExchangeRenal ArteryVasodilationVasodilator AgentsSupine PositionAnesthesia, InhalationHeartNG-Nitroarginine Methyl EsterMyocardiumCollateral CirculationLegIsofluraneInfusions, ParenteralNitric OxideFlow CytometryRats, Sprague-DawleyCatsMesenteric ArteriesMuscle, SkeletalReference ValuesTomography, Emission-Computed, Single-PhotonForearmSheepPropranololSympathetic Nervous SystemMagnetic Resonance ImagingNorepinephrineRabbitsRats, WistarPulsatile FlowDose-Response Relationship, DrugRats, Inbred StrainsReproducibility of ResultsInjections, IntravenousCoronary VesselsDisease Models, AnimalNitric Oxide SynthaseLungArteriesMyocardial ContractionCapillariesBlood DonorsRheologyMyocardial InfarctionEnzyme InhibitorsCoronary DiseaseUltrasonography, DopplerHyperemiaPostureXenonPlethysmographyUltrasonography, Doppler, ColorAnoxiaSensitivity and SpecificityContrast Media
QuantitativeChoroidal blood flowRCBFPulsatile Flow1990Scan markers of senile plaquesNeuronal activityOcclusionVelocityDopplerPatternsEndothelial functionPositron emission tCoronary flow reserveCerebral bloodSPECTCONCLUSIONSTissueMethodsCognitiveCarbon dioxideComputed TomographyIschemiaNeurological2019MicrospheresHemodynamicsVesselsMucosalCharacterizationGlucosePhysiologicalNitratePulseCardiacOxygenBarrierFluorescentPeakAbstractObjectivesPreciseRespirationRESULTSParametersMetabolismBrainDiseasesDetectAcuteLaboratoryEmissionContrastScopeStudyAccuracySupply
Quantitative5
  • Radionuclide methods including scintigraphy and quantitative renal function measurement can be used to provide further information about equine renal function. (avmi.net)
  • Quantitative methods using radiopharmaceuticals can provide precise measurement of glomerular filtration rate and effective renal blood flow. (avmi.net)
  • This intrinsic blur also limits the quantitative accuracy of PET measurements and results in an incorrect estimate of radioactivity concentration in small structures ( 1 ). (snmjournals.org)
  • BACKGROUND: Laser speckle contrast imaging allows real-time, non-invasive, quantitative measurements of regional blood flow. (bvsalud.org)
  • CT angiography (CTA) imaging with maximum intensity projection (MIP) and quantitative measurement of stenosis is an accurate noninvasive technique for diagnosing fibromuscular dysplasia/stenosis of the visceral arteries, regardless of the etiology. (medscape.com)
Choroidal blood flow1
  • In this report, we describe the use of plane-wave ultrasound to image and characterize choroidal blood flow. (arvojournals.org)
RCBF6
  • Single-photon emission CT is mainly used to measure blood flow and concentration degree between arterial blood and brain tissue and is used to calculate regional cerebral blood flow (rCBF). (medscape.com)
  • In addition to rCBF measurement by SPECT , dopamine transporter radiotracers are also used with SPECT and are useful in distinguishing the different forms of dementia. (medscape.com)
  • Fortunately, the current research paradigm is able to estimate brain activity by isolating and measuring areas of regional cerebral blood flow (rCBF). (sagepub.com)
  • This entry describes the relationship between neural activity and rCBF and details two popular methodologies that researchers use to infer neural activity from rCBF measurements. (sagepub.com)
  • Snyder, Gregory J. "Regional Cerebral Blood Flow (rCBF). (sagepub.com)
  • This design allowed adaptation to be examined by testing for an interaction between regional cerebral blood flow (rCBF) increases brought about by a motor task and the number of trials (time). (ox.ac.uk)
Pulsatile Flow1
  • Unlike traditional pulse oximeters, regional oximeters measure a mix of arterial, capillary, and venous blood in cerebral and peripheral tissue and do not depend on pulsatile flow. (lww.com)
19901
  • 1990). Measurements of regional cerebral blood flow and cognitive performance in Alzheimer's disease. (bvsalud.org)
Scan markers of senile plaques1
  • Numerous studies are under way to identify specific imaging markers for different types of dementia, including cerebral volumetric measurements, diffusion imaging, spectroscopy, very-high-field MRI scans of senile plaques, and PET scan markers of senile plaques. (medscape.com)
Neuronal activity1
  • CMRO 2 directly reflects tissue metabolism, so is widely considered a more direct measurement of underlying neuronal activity than the cerebrovascular CBF and CBV responses. (frontiersin.org)
Occlusion6
  • Velocity measurements in the upstream and downstream vessel segments indicated that stable oscillations were the result of regional flow occlusion within the mucosal plexus. (nih.gov)
  • MAIN OUTCOME MEASURES: Flow mediated, endothelial dependent dilatation was compared to duration of cuff occlusion, peak reactive hyperaemia, and duration of increased flow. (ox.ac.uk)
  • RESULTS: Vessel dilatation and duration of peak flow change increased with longer duration of cuff occlusion. (ox.ac.uk)
  • After 4.5 minutes of occlusion, flow mediated dilatation was mean (SD) 96 (6)% of maximal response and did not increase significantly with longer occlusion times. (ox.ac.uk)
  • CONCLUSIONS: Measures of arterial function vary with duration of blood flow occlusion and ISDN dose. (ox.ac.uk)
  • Maximum arterial response was reached in all subjects after 4.5 minutes of blood flow occlusion or 200 micrograms of ISDN. (ox.ac.uk)
Velocity4
  • Our group has developed nonimaging and dedicated Doppler techniques for measuring blood velocity in the large and small peripheral arteries of anesthetized mice. (nih.gov)
  • With these methods one can measure cardiac filling and ejection velocities, velocity pulse arrival times for determining pulse wave velocity, peripheral blood velocity and vessel wall motion waveforms, jet velocities for the calculation of the pressure drop across stenoses, and left main coronary velocity for the estimation of coronary flow reserve. (nih.gov)
  • These data were processed to produce a time series of power Doppler images and spectrograms depicting choroidal flow velocity. (arvojournals.org)
  • Choroidal flow was moderately pulsatile, with peak systolic velocity averaging approximately 10 mm/sec and resistive index of 0.55. (arvojournals.org)
Doppler4
  • These noninvasive methods are convenient and easy to apply, but care must be taken in interpreting measurements due to Doppler sample volume size and angle of incidence. (nih.gov)
  • The magnitudes and waveforms of blood velocities from both cardiac and peripheral sites are similar in mice and humans, such that much of what is learned using Doppler technology in mice may be translated back to humans. (nih.gov)
  • The use of Duplex Doppler ultrasound may allow for the characterization of regional hemodynamics of the equine kidneys, but is currently an untapped method for evaluation of equine renal hemodynamics. (avmi.net)
  • Laser doppler mucosal blood flow and regional P CO2 (Pr CO2 ) measurements were obtained. (johnshopkins.edu)
Patterns4
  • Global Blood Flow Measurement Devices Market Report 2022 comes with the extensive industry analysis by Introspective Market Research with development components, patterns, flows and sizes. (bharatbook.com)
  • The complex oscillation patterns suggested more than one mechanism for these changes in blood flow. (nih.gov)
  • We conclude that both the stable and metasable oscillating patterns reflect flow adaptations to inflammatory changes in the mucosal plexus. (nih.gov)
  • Interictal 'patchy' regional cerebral blood flow patterns in migraine patients. (ku.dk)
Endothelial function1
  • Non-invasive measurement of endothelial function: effect on brachial artery dilatation of graded endothelial dependent and independent stimuli. (ox.ac.uk)
Positron emission t1
  • Positron emission tomography using 18 F-fluorodeoxyglucose ( 18 F-FDG) is more sensitive than cerebral blood flow SPECT for detecting decreased glucose metabolism, especially in imaging studies carried out to assess dementia, but is not covered by insurance in Japan [4]. (fortunejournals.com)
Coronary flow reserve1
  • Because microvascular disease has been regarded as an important cause of heart failure or diastolic dysfunction in diabetic patients, we tested the hypothesis that coronary flow reserve (CFR), which reflects coronary microvascular function, is associated with LV diastolic dysfunction in patients with type 2 diabetes. (biomedcentral.com)
Cerebral blood11
  • Neurovascular dysfunction, including blood-brain barrier (BBB) breakdown and cerebral blood flow (CBF) dysregulation and reduction, is increasingly recognized as contributing to Alzheimer disease. (medscape.com)
  • Effects of W-CDMA 1950 MHz EMF emitted by mobile phones on regional cerebral blood flow in humans med. (emf-portal.org)
  • To investigate the effects of exposure to W-CDMA cellular phone on regional cerebral blood flow in humans . (emf-portal.org)
  • No significant changes in regional cerebral blood flow were found under exposure compared to sham exposure . (emf-portal.org)
  • In this study, electromagnetic fields emitted by W-CDMA mobile phones did not affect the regional cerebral blood flow in humans during or after exposure . (emf-portal.org)
  • Bedside monitors are used in thermal diffusion cerebral blood flow, infra-red spectroscopy, micro dialysis and others. (clickpress.com)
  • The BOLD signal is dependent on the concentration of deoxygenated hemoglobin in blood, which is modulated by changes in cerebral blood flow (CBF), cerebral blood volume (CBV), and cerebral metabolic rate of oxygen consumption (CMRO 2 ). (frontiersin.org)
  • The purpose of this study was to clarify the effect of the head reference angle (jaw pull angle) in the cephalocaudal direction on mean cerebral blood flow (mCBF) during radionuclide (RI)-angiography using the Patlak Plot method in CBF Single Photon Emission Computed Tomography (SPECT) testing with 99mTc-ECD. (fortunejournals.com)
  • In Japan, the application of Single Photon Emission Computed Tomography (SPECT) for cerebral blood flow changed from mainly inpatients to mainly outpatients due to the spread of the diagnosis procedure combination system. (fortunejournals.com)
  • System for long-term measurement of cerebral blood and tissue oxygenation on newborn infants by near infra-red transillumination. (journalofhearingscience.com)
  • Villringer A, Dirnagl U. Coupling of brain activity and cerebral blood flow: basis of functional neuroimaging. (journalofhearingscience.com)
SPECT1
CONCLUSIONS1
  • Conclusions: Intraluminal glucose can augment mucosal blood flow during gut I/R and may explain the protective effect we previously observed. (johnshopkins.edu)
Tissue3
  • This allows fluid to leak from the blood vessel into the surrounding tissue. (eorthopod.com)
  • Therefore, monitoring cerebral tissue oxygen status with regional oximetry is being increasingly used by anesthesiologists and perfusionists during surgery. (lww.com)
  • The choroid has the highest rate of blood flow per unit weight of any tissue. (arvojournals.org)
Methods1
  • reporting of microbiology results using traditional culture-based phenotypic methods is complicated by the dependence on the PROJECT SCOPE All positive blood cultures from growth rate of organisms for both initial detection and subsequent receipt to final results reporting. (who.int)
Cognitive1
  • Data included radiology image scans and cognitive/behavioral measurements. (news-medical.net)
Carbon dioxide1
  • Reference blood samples were taken from the radial artery and internal jugular bulb vein, at baseline and after a series of increasingly hypoxic states induced by altering the inspired oxygen concentration while maintaining normocapnic arterial carbon dioxide pressure (PaCO 2 ). (lww.com)
Computed Tomography1
  • Single-photon emission computed tomography was used to study regional pulmonary blood flow. (silverchair.com)
Ischemia2
  • Anesthetized pigs underwent 90 min of regional LV ischemia and 90 min of reperfusion. (diabetesjournals.org)
  • Results: Mucosal blood flow was significantly increased during both ischemia and reperfusion when intraluminal glucose was present compared with intraluminal alanine. (johnshopkins.edu)
Neurological1
  • Two central objectives of neurological research are the isolation and measurement of cerebral neurological activity. (sagepub.com)
20191
  • The global impacts of the coronavirus disease 2019 (COVID-19) are already starting to be felt, and will significantly affect the Blood Flow Measurement Devices market in 2020. (bharatbook.com)
Microspheres1
Hemodynamics1
  • Gas exchange, hemodynamics, and pulmonary blood flow were determined in both groups before and after the induction of acute lung injury and at corresponding time points 1 and 2 h after each instillation of perfluorocarbon in the PLV group. (silverchair.com)
Vessels3
  • They also regulate blood vessels and sweat glands. (eorthopod.com)
  • These chemicals cause vasodilation (opening of the blood vessels). (eorthopod.com)
  • In contrast, metastable oscillations demonstrated a lower frequency (0.2-0.4 cycles/sec) and appeared to be the result of flow dynamics in vessels linked by the bridging mucosal vessels. (nih.gov)
Mucosal2
  • Rhythmic changes in blood flow direction have been described in the mucosal plexus of mice with acute colitis. (nih.gov)
  • By tracking fluorescent nanoparticles in the inflamed mucosal plexus, we identified two forms of blood flow oscillations within the inflammatory mouse colon. (nih.gov)
Characterization1
  • Characterization of choroidal flow dynamics offers a novel means for assessment of the choroid's role in ocular disease. (arvojournals.org)
Glucose2
  • The combination of PVC with SPM has shown improved sensitivity for the detection of differences in regional cerebral metabolic rate of glucose between controls and patients with Alzheimer's disease ( 6 ). (snmjournals.org)
  • Blood flow changes were reflected by lower jejunal Pr CO2 measurements with intraluminal glucose compared with intraluminal alanine. (johnshopkins.edu)
Physiological1
  • In contrast to the primary sensori-motor cortex, the cerebellum exhibits a decrease in physiological activation (increases in regional blood flow during performance) with practice. (ox.ac.uk)
Nitrate2
  • Adverse effects, blood pressure, heart rate, haemoglobin concentra-tion, per cent methaemoglobin in blood and plasma nitrite and nitrate concentration were recorded frequently for 24 h after each administration of sodium nitrite. (inchem.org)
  • Nitrate induced, endothelial independent dilatation was compared to dose of ISDN and change in flow. (ox.ac.uk)
Pulse1
Cardiac1
Oxygen4
  • A near-infrared spectroscopy sensor connected to a regional oximetry system (O3 TM , Masimo, Irvine, CA) was placed on the subject's forehead, to provide continuous measurement of regional oxygen saturation (rSO 2 ). (lww.com)
  • Absolute and trend accuracy of the regional oximetry system was determined by comparing rSO 2 against reference cerebral oxygen saturation (SavO 2 ), that is calculated by combining arterial and venous saturations of oxygen in the blood samples. (lww.com)
  • While the central retinal artery provides the inner retina's blood supply, most of its oxygen demand is supplied by diffusion from the underlying choroid (which is the sole supply of the avascular fovea), which is in turn supplied by the ciliary arteries. (arvojournals.org)
  • In the surfactant washout animal model of acute lung injury, redistribution of pulmonary blood flow does not seem to be a major factor for the observed increase of arterial oxygen tension during partial liquid ventilation. (silverchair.com)
Barrier1
  • Blood-brain barrier (BBB) impairment is a stable characteristic over 1 year and is present in an important subgroup of patients with Alzheimer disease. (medscape.com)
Fluorescent1
Peak1
  • If, for instance: Peak uterine pressure amplitudes were 50 mmHg during the 10 minute period of measurement 3 contractions occurred subtract the resting tone from the peak intensity of the contraction add the 3 contractions together to get the MVUs Montevideo units are calculated by obtaining the peak uterine pressure amplitude and subtracting the resting tone. (wikipedia.org)
Abstract1
  • DSN: SEE BLOOD AND URINE DATASET NAMES ABSTRACT General Information HISPANIC HEALTH AND NUTRITION EXAMINATION SURVEY, 1982-84 Mexican Americans Cuban Americans Puerto Ricans Description The Hispanic Health and Nutrition Examination Survey (HHANES) was conducted from July 1982 through December 1984. (cdc.gov)
Objectives1
  • in of blood cultures in delivered to 1) process selected, 2) problem statement and objectives developed, Microbiology. (who.int)
Precise1
  • Our study Blood Flow Measurement Devices Market helps user to make precise decision in order to expand their market presence and increase market share. (bharatbook.com)
Respiration1
  • Basically device are multiple color and different graphical users and used in different ways depending on hospital needs when doctor or nurse wants to measure heart rate, respiration rate, blood pressure, temperature and breathing rate. (clickpress.com)
RESULTS2
  • Blood culture time to reporting was selected for the project into BACTEC when accessioned as priority, according to the following criteria: importance of results, probability convenient. (who.int)
  • The project scope was all positive blood cultures from receipt in the laboratory to final results reporting. (who.int)
Parameters1
  • Quantification of microcirculatory parameters by joint analysis of flow-compensated and non-flow-compensated intravoxel incoherent motion (IVIM) data. (lu.se)
Metabolism1
  • Regional brain metabolism differs between narcolepsy type 1 and idiopathic hypersomnia Sleep. (usc.edu)
Brain2
  • MRI can be considered the preferred neuroimaging examination for Alzheimer disease because it allows accurate measurement of the 3-dimensional (3D) volume of brain structures, especially the size of the hippocampus and related regions. (medscape.com)
  • The circle of Willis, located at the base of the brain, provides the main route for collateral blood flow in severe occlusive disease of the internal carotid artery (ICA). (ajnr.org)
Diseases1
  • After two years in the army as a commanding officer of the Bamberg Dispensary in Germany, he returned to Tulane for a two-year fellowship in blood diseases of infants and children. (redlandsfortnightly.org)
Detect1
  • Several biomarkers are being found to detect and predict AD in the urine, saliva, and blood. (medscape.com)
Acute1
  • It has been proposed that partial liquid ventilation (PLV) causes a compression of the pulmonary vasculature by the dense perfluorocarbons and a subsequent redistribution of pulmonary blood flow from dorsal to better-ventilated middle and ventral lung regions, thereby improving arterial oxygenation in situations of acute lung injury. (silverchair.com)
Laboratory4
  • PROBLEM STATEMENT In our laboratory, only process by identifying each step, removing non-value added steps, 19% of positive blood cultures are finalized with and eliminating waste. (who.int)
  • VGH) is a full service regional laboratory. (who.int)
  • The laboratory was cleaned, de-cluttered, and organized culture processing identified to have an impact on this to achieve standardization and to decrease unnecessary waiting and figure were: time to accession blood cultures, time to motion. (who.int)
  • Each survey involved collecting data by direct physical examination, the taking of a medical history, and laboratory and clinical tests and measurements. (cdc.gov)
Emission1
  • A software package that allows serial intensity measurements on a single sample containing multiple fluorophors with unique excitation, emission and band width requirements. (washington.edu)
Contrast1
  • Blood flow images and blood flow index (BFI) values of toes were recorded using laser speckle contrast imaging 5 min before nerve block and at 5 min intervals until 30 min after sciatic block. (bvsalud.org)
Scope1
  • The data generated by conducting the primary and secondary research.The report covers detail analysis of driver, constraints and scope for new players entering the Blood Flow Measurement Devices market. (bharatbook.com)
Study4
  • The report also calculates present and past market values to forecast potential market management through the forecast period between 2022-2028.This research study of Blood Flow Measurement Devices involved the extensive usage of both primary and secondary data sources. (bharatbook.com)
  • Value chain analysis offers in depth information about value addition at each stage.The study includes drivers and restraints for Blood Flow Measurement Devices Market along with their impact on demand during the forecast period. (bharatbook.com)
  • Competitive analysis is the study of strength and weakness, market investment, market share, market sales volume, market trends of major players in the market.The Blood Flow Measurement Devices market study focused on including all the primary level, secondary level and tertiary level competitors in the report. (bharatbook.com)
  • In this study, we evaluated absolute and trend accuracy of a new regional oximetry technology in healthy volunteers. (lww.com)
Accuracy3
  • Absolute and Trend Accuracy of a New Regional Oximeter in He. (lww.com)
  • It provides the measurement and accuracy required in an instrument to be of prominent use. (clickpress.com)
  • Non-core temperature measurement can be obtained using axillary thermometry (where accuracy relies on the device being in continuous close proximity to the axillary artery) or skin probes. (wfsahq.org)
Supply3
  • 1. Blood Flow Measurement Devices analysis predicts the representation of this market, supply and demand, capacity, detailed investigations, etc. (bharatbook.com)
  • These are in part caused by decreased blood supply to the affected tissues as the condition progresses. (eorthopod.com)
  • Visible collaterals of the circle of Willis on MR angiograms are able to supply collateral flow in the presence of carotid artery obstruction. (ajnr.org)