標(biāo)題: Titlebook: Optical Imaging of Brain Function and Metabolism 2; Physiological Basis Arno Villringer,Ulrich Dirnagl Book 1997 The Editor(s) (if applica [打印本頁] 作者: 有作用 時(shí)間: 2025-3-21 16:09
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書目名稱Optical Imaging of Brain Function and Metabolism 2網(wǎng)絡(luò)公開度學(xué)科排名
書目名稱Optical Imaging of Brain Function and Metabolism 2被引頻次
書目名稱Optical Imaging of Brain Function and Metabolism 2被引頻次學(xué)科排名
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書目名稱Optical Imaging of Brain Function and Metabolism 2年度引用學(xué)科排名
書目名稱Optical Imaging of Brain Function and Metabolism 2讀者反饋
書目名稱Optical Imaging of Brain Function and Metabolism 2讀者反饋學(xué)科排名
作者: 手工藝品 時(shí)間: 2025-3-22 00:11 作者: 牛馬之尿 時(shí)間: 2025-3-22 02:04
978-1-4899-0058-6The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Science+Busines作者: 貪婪的人 時(shí)間: 2025-3-22 05:45 作者: 執(zhí)拗 時(shí)間: 2025-3-22 12:18
The MR ,, Based Perfusion ModelThere are a number of theoretical and practical questions one needs to consider to understand and optimize contrast to noise of the versatile .. based perfusion model. We made an evaluation of the several popular .. based methods currently applied to measure flow and flow change.作者: 運(yùn)氣 時(shí)間: 2025-3-22 16:43
Towards Near-Infrared Imaging of the BrainSeveral methods have been employed in attempts to estimate atraumatically the in-vivo cerebral blood flow and metabolism. One approach is to measure brain hemoglobin oxygen-saturation level and blood volume in vivo by using near-infrared reflection or transmission spectroscopy.作者: Organization 時(shí)間: 2025-3-22 18:14 作者: infelicitous 時(shí)間: 2025-3-22 23:09
Is There a Different Type of MR-Contrast in the Early Phase of Functional Activation?ase in the oxyhemoglobin concentration of the activated areas, which can be observed by susceptibility sensitive MR imaging techniques such as echo planar imaging (2) or gradient echo imaging with long echo times (3).作者: Bumble 時(shí)間: 2025-3-23 03:41
Cerebral Oxygenation States as Revealed by Near-Infrared Spectrophotometryitoring of tissue oxygenation. However, even now the quantification of hemoglobin signals and the knowledge of the redox behavior of cytochrome oxidase in vivo, as well as the measurement of cytochrome in the presence of normal blood circulation still pose unresolved issues.作者: Callus 時(shí)間: 2025-3-23 06:34 作者: wangle 時(shí)間: 2025-3-23 09:50 作者: employor 時(shí)間: 2025-3-23 15:57
Brain Oxygenation Monitoring during Cardiopulmonary Bypass by Near Infrared Spectroscopyn (Bashein, 1990), microembolism (Gallagher, 1973), and release of biocompatible materials. These factors can affect the intraoperative oxygen supply to the brain modifying the arterial oxygen saturation, the total and regional cerebral blood flow, and the hemoglobin (Hb) content.作者: LAITY 時(shí)間: 2025-3-23 21:55 作者: 使長(zhǎng)胖 時(shí)間: 2025-3-23 22:30
Assessment of Local Brain Activationuring rest and during performance of a calculation task and a Stroop task..When a penetration depth of near-infrared light of 0.9 cm into the brain cortex was assumed, a statistically significant correlation between changes in CBF and changes in [total-Hb] was found. These data confirm the validity of NIRS measurements in human adults.作者: 小鹿 時(shí)間: 2025-3-24 03:18 作者: Prostatism 時(shí)間: 2025-3-24 09:19
0065-2598 ng method. Optical intrinsic signals offer unrivaled temporal and spatial resolution of functional measurements of the exposed brain cortex in animals and humans. Near-infrared spectroscopy and imaging ap- proaches permit the noninvasive functional assessment of the human brain at bedside. Main adva作者: COLIC 時(shí)間: 2025-3-24 11:28
Signal Sources in Bold Contrast FMRIuclear spins experience spatially varying magnetic fields, and consequently precess at different rates depending on position. The result is a loss of phase coherence within the voxel, and thus a decrease in signal relative to when the contrast agent is absent.作者: PANEL 時(shí)間: 2025-3-24 17:35
Correlation between Absolute Deoxyhaemoglobin [dHb] Measured by Near Infrared Spectroscopy (NIRS) anure. Since alterations in tissue function normally precede structural damage, MR image contrast which accurately reflects this tissue function holds the promise of earlier detection of pathophysiology.作者: Free-Radical 時(shí)間: 2025-3-24 21:57 作者: 案發(fā)地點(diǎn) 時(shí)間: 2025-3-25 01:39
Book 1997 Optical intrinsic signals offer unrivaled temporal and spatial resolution of functional measurements of the exposed brain cortex in animals and humans. Near-infrared spectroscopy and imaging ap- proaches permit the noninvasive functional assessment of the human brain at bedside. Main advantages of 作者: lobster 時(shí)間: 2025-3-25 05:43
Can We Measure Correlates of Neuronal Activity with Non-Invasive Optical Methods?nfrared optical measurements can be taken repeatedly and rapidly, which makes the study of the dynamics of physiological phenomena possible. Since measurements can be taken from circumscribed areas of the brain, it is possible to conduct functional brain imaging studies (see Tamura, this volume).作者: 戲服 時(shí)間: 2025-3-25 08:35
tung, die Auswirkung der Werkzeugeigenschaften, d. h. den Einflu? der Schleifscheibe um- fassenden Gr??en auf das Verhalten w?hrend der Zerspanung und auf das Ergebnis zu kennen. Die heute übliche Kennzeichnung l??t nur in beschr?nktem Ma?e eine Zu- ordnung des Aufbaues zum Arbeitsergebnis zu, da wi作者: expeditious 時(shí)間: 2025-3-25 12:41
Arno Villringertung, die Auswirkung der Werkzeugeigenschaften, d. h. den Einflu? der Schleifscheibe um- fassenden Gr??en auf das Verhalten w?hrend der Zerspanung und auf das Ergebnis zu kennen. Die heute übliche Kennzeichnung l??t nur in beschr?nktem Ma?e eine Zu- ordnung des Aufbaues zum Arbeitsergebnis zu, da wi作者: 有機(jī)體 時(shí)間: 2025-3-25 15:54
J. Hennig,C. Janz,O. Speck,T. Ernsten von ungef?hr 4% pro ° C. Sie sind in Form kleiner Kügelchen von 0,5 mm 0 erh?ltlich und werden daher oft als ?Zwerg-Widerst?nde? bezeichnet. Die geringe Abmessung der Fühler macht eine nahezu punktf?rmige Temperaturmessung m?glich, und der gro?e Temperaturkoeffizient gew?hrleistet eine hohe Empfi作者: FLAX 時(shí)間: 2025-3-25 21:37
K. Herholzen von ungef?hr 4% pro ° C. Sie sind in Form kleiner Kügelchen von 0,5 mm 0 erh?ltlich und werden daher oft als ?Zwerg-Widerst?nde? bezeichnet. Die geringe Abmessung der Fühler macht eine nahezu punktf?rmige Temperaturmessung m?glich, und der gro?e Temperaturkoeffizient gew?hrleistet eine hohe Empfi作者: Semblance 時(shí)間: 2025-3-26 01:02 作者: 衰弱的心 時(shí)間: 2025-3-26 05:30 作者: 直言不諱 時(shí)間: 2025-3-26 08:43 作者: 承認(rèn) 時(shí)間: 2025-3-26 15:16 作者: CRUDE 時(shí)間: 2025-3-26 18:33
Mamoru Tamura,Yoko Hoshi,Osamu Hazeki,Fumihiko Okadahnungsverfahren - natürlich mit weit geringeren zul?ssigen Festigkeitswerten - anwenden kann. Für die Berechnung k?nnen Einzelnachweise über Zahnfu?festigkeit und Flanken- beanspruchung bisher noch nicht voneinander getrennt geführt werden, weil die Firmenangaben bezüglich der Festigkeitswerte weit 作者: Obligatory 時(shí)間: 2025-3-27 00:22 作者: IRS 時(shí)間: 2025-3-27 01:40 作者: 大氣層 時(shí)間: 2025-3-27 07:35 作者: Accessible 時(shí)間: 2025-3-27 12:46
S. Punwani,C. E. Cooper,M. Clemence,J. Penrice,P. Amess,J. Thornton,R. J. Ordidgeasstrom, die Abkühlung oder Erw?rmung des zu reinigenden Gases in Frage. . Die Ursache für das Versagen der Elektrofilter bei sehr hochohmigen St?uben ist das sogenannte Rücksprühen, das erstens die überschlagspannung des Filters stark herabsetzt und zweitens durch Erzeugung zus?tzlicher Ionen im Fi作者: ANA 時(shí)間: 2025-3-27 15:02 作者: 膽小鬼 時(shí)間: 2025-3-27 21:07
Kersten Villringer,Satoshi Minoshima,Christoph Hock,Hellmuth Obrig,Sibylle Ziegler,Ulrich Dirnagl,Ma des Rat- hauses Wuppertal-Vohwinkel in Betrieb genommen worden. Nach anf?nglichen Versuchsmessungen wurde die Station im folgenden Jahr für dauernde Feld- st?rkeregistrierung eingerichtet und durch weitere Ger?te so erg?nzt, da? au?er dem Feldst?rkeverlauf auch die Auswirkung von atmosph?rischen Entladungen 978-3-663-06471-8978-3-663-07384-0作者: 公理 時(shí)間: 2025-3-27 22:09
Ulrich Dirnaglwiderstand bis zu Driftwinkeln von 0 bis etwa 7,5° behalten. Die Abh?ngigkeitsfunktion beider Werte voneinander entspricht fast der aus den Tiefwasserversuchen errechneten (Abb. 29 unten). Für die auf flachem Wasser gemessenen Driftwinkel ergibt sich unter Annahme gleichbleibender ReynoldZahlen zwis作者: flaggy 時(shí)間: 2025-3-28 03:43
Pierre J. Magistretti,Luc Pellerinwiderstand bis zu Driftwinkeln von 0 bis etwa 7,5° behalten. Die Abh?ngigkeitsfunktion beider Werte voneinander entspricht fast der aus den Tiefwasserversuchen errechneten (Abb. 29 unten). Für die auf flachem Wasser gemessenen Driftwinkel ergibt sich unter Annahme gleichbleibender ReynoldZahlen zwis作者: 原來 時(shí)間: 2025-3-28 07:17
Wolfgang Kuschinskywiderstand bis zu Driftwinkeln von 0 bis etwa 7,5° behalten. Die Abh?ngigkeitsfunktion beider Werte voneinander entspricht fast der aus den Tiefwasserversuchen errechneten (Abb. 29 unten). Für die auf flachem Wasser gemessenen Driftwinkel ergibt sich unter Annahme gleichbleibender ReynoldZahlen zwis作者: 顧客 時(shí)間: 2025-3-28 10:57
Signal Sources in PETed isotopes and tracers to measure cerebral blood flow (CBF), glucose metabolism (CMRGlu), and oxygen metabolism (CMRO.). The short half-life times permit application of significant doses (up to 200 MBq .F, up to 5000 MBq .O) resulting in low-noise images due to high countrates with effective whole 作者: 車床 時(shí)間: 2025-3-28 17:23 作者: anniversary 時(shí)間: 2025-3-28 19:10
Towards Brain Mapping Combining Near-Infrared Spectroscopy and High Resolution 3D MRIss hemodynamic response induced by functional brain activation (Hoshi et al. 1993, Villringer et al. 1993, Obrig et al. 1995, Kato et al. 1993, Meek et al. 1995), The high temporal resolution and the ability to assess several oxygenation parameters simultaneously provides information about temporal 作者: 性學(xué)院 時(shí)間: 2025-3-29 00:54 作者: 有助于 時(shí)間: 2025-3-29 04:33
Book 1997ts. In simultaneous studies, near-infrared spec- troscopy measurements are directly compared to other functional methods, especially PET and fMRI and examples are given for new applications of the NIRS-method. Based on re- sults obtained with optical methods and other functional techniques the lates作者: famine 時(shí)間: 2025-3-29 07:43
0065-2598 fMRI and examples are given for new applications of the NIRS-method. Based on re- sults obtained with optical methods and other functional techniques the lates978-1-4899-0058-6978-1-4899-0056-2Series ISSN 0065-2598 Series E-ISSN 2214-8019 作者: Circumscribe 時(shí)間: 2025-3-29 12:50
Optical Imaging of Brain Function and Metabolism 2Physiological Basis 作者: Ganglion 時(shí)間: 2025-3-29 17:31
Functional Neuroimagingift. In this article, it is reviewed how these different types of light-tissue interactions can be measured and how these measurements can be related to brain function. Based on these considerations, a new classification scheme of functional optical methods is proposed.作者: Extort 時(shí)間: 2025-3-29 20:21 作者: Prostaglandins 時(shí)間: 2025-3-30 00:46
Is There a Different Type of MR-Contrast in the Early Phase of Functional Activation?ase in the oxyhemoglobin concentration of the activated areas, which can be observed by susceptibility sensitive MR imaging techniques such as echo planar imaging (2) or gradient echo imaging with long echo times (3).作者: defile 時(shí)間: 2025-3-30 07:48
Signal Sources in PETnly tracer amounts of indicator substances are used, not only blood flow and energy metabolism can be measured, but also neurotransmitter synthesis (e.g., dopa decarboxylase activity with .F-6-fluoro-L-dopa) and neuroreceptor binding capacity (many tracers, most frequently labeled with .F or .C have作者: 敵手 時(shí)間: 2025-3-30 08:12
Can We Measure Correlates of Neuronal Activity with Non-Invasive Optical Methods?987) and therefore penetrates several centimeters inside the head and other body structures. Thus, near-infrared light can be used to study absorption and scattering properties of living tissues. This includes non-invasive, quantitative spectroscopic measurements of the concentration of substances w作者: 利用 時(shí)間: 2025-3-30 14:14 作者: sclera 時(shí)間: 2025-3-30 19:50 作者: impale 時(shí)間: 2025-3-30 23:04
Cerebral Oxygenation States as Revealed by Near-Infrared Spectrophotometryitoring of tissue oxygenation. However, even now the quantification of hemoglobin signals and the knowledge of the redox behavior of cytochrome oxidase in vivo, as well as the measurement of cytochrome in the presence of normal blood circulation still pose unresolved issues.作者: voluble 時(shí)間: 2025-3-31 04:39 作者: Hallmark 時(shí)間: 2025-3-31 08:39 作者: CHOKE 時(shí)間: 2025-3-31 09:49
Near-Infrared Spectroscopy in Functional Activation Studiesation in human adults.. If NIRS is to establish its place in functional brain research it must be proven that the changes monitored reflect the activation state of the cortex in response to a stimulus. This article gives an overview of the studies performed. On the basis of the reported findings and作者: BET 時(shí)間: 2025-3-31 13:52
Correlation between Absolute Deoxyhaemoglobin [dHb] Measured by Near Infrared Spectroscopy (NIRS) anrd MR image contrast relies upon tissue differences in MR visible hydrogen spin density, spin-lattice (T1) relaxation and spin-spin (T2) relaxation. In soft tissue, the variation of MR visible hydrogen spin density between tissues types is small (up to 30%) whereas T1 and T2 relaxation times can var作者: VAN 時(shí)間: 2025-3-31 18:48 作者: Jacket 時(shí)間: 2025-4-1 01:25
Assessment of Local Brain Activationhanges in [oxy-Hb], [deoxy-Hb] and [total-Hb] as measured by NIRS over the left forehead were compared to measurements of cerebral blood flow by PET during rest and during performance of a calculation task and a Stroop task..When a penetration depth of near-infrared light of 0.9 cm into the brain co作者: 丑惡 時(shí)間: 2025-4-1 04:19
Metabolic Aspects of Neurovascular Couplingthe function of neurovascular coupling? Does it serve to provide a constant glucose or oxygen delivery to brain cells? Does it mainly regulate removal of tissue metabolites such as lactate? Recent data has even challenged that there is coupling of oxygen metabolism and blood flow, which has led some
