7 nuclear magnetic resonance spectroscopy

... task-induced hemodynamic changes in the cortex, similar to those signal obtain in functional magnetic resonance imaging (fMRI) This study presents an attempt of offline classification of single ... Express 2008, 16(14):10323-30 Sitaram R, et al: Temporal classification of multichannel near-infrared spectroscopy signals of motor imagery for developing a brain-computer interface NeuroImage 2007, ... Coyle SM, Ward TE, Markham CM: Brain-computer interface using a simplified functional near-infrared spectroscopy system Journal of Neural Engineering 2007, 4(3):219-226 Naito M, et al: A Communication...

Ngày tải lên: 19/06/2014, 08:20

... the so called BOLD effect (Blood Oxygenation Level Dependent) and, hence, of the functional magnetic resonance [1] Thus, the assessment of cerebral hemodynamics is of paramount importance for ... References Ogawa S, et al.: Functional brain mapping by blood oxygenation level-dependent contrast magnetic resonance imaging A comparison of signal characteristics with a biophysical model Biophys J ... recordings Changes in the concentrations of O2Hb and CO2Hb were measured by means of a near – infrared spectroscopy device (NIRO 300, Hammamatsu Photonics, Australia) The emitting probe of the NIRS equipment...

Ngày tải lên: 19/06/2014, 10:20

... dobutamine on skeletal muscle metabolism in patients with chronic heart failure were studied by magnetic resonance spectroscopy, which indicated that dobutamine has the ability to increase cardiac output ... 0.1 -12.6 ± 4.9 StO2 deoxygenation rate (%/min) -12.7 ± 5.2 -12.6 ± 4.6 0.9 NIRS, near-infrared spectroscopy; StO2, skeletal muscle tissue oxygenation 100.00 90.00 ScvO2 (%) 80.00 70.00 60.00 ... additional right heart dysfunction [4] Discrepancies of to 24% have been reported [5-7,9] Near infrared spectroscopy (NIRS) is a technique used for continuous, non-invasive, bedside monitoring of tissue...

Ngày tải lên: 13/08/2014, 20:21

... with symptoms or silent infarctions (presence of one or more lacunar infarcts on preoperative magnetic resonance imaging) Peripheral vascular disease Chronic neurologic illness Congestive heart ... risks (Grogan et al,2008) The imaging techniques improves every year and one of them is the magnetic resonance diffusion-weighted imaging (DWI), which identifies regions of cerebral ischemia with ... result in oxygen imbalance during surgery The use of jugular venous bulb monitoring or near infrared spectroscopy (NIRS) revealed oxygen desaturation 27-43% during rewarming period while cerebral metabolic...

Ngày tải lên: 17/03/2014, 02:20

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Ngày tải lên: 12/08/2014, 23:20

... infrared spectroscopy Correlation between cardiac output (CO) and blood flow index (BFI) by near infrared spectroscopy r = 0.71; p < 0.0001 n = 76 measurements in 20 animals index by near infrared spectroscopy ... velocity infrared spectroscopy Th + 10 min, after + 90 min, Blood(BFI) by near + 40 min,start therapy;atultrasound and bood minminutes of therapy) index (BFI) by near infrared spectroscopy at the ... blood (BFI) by near infrared spectroscopy Correlation blood flow indexflow velocity by transcranial Doppler ultrasound and blood flow index (BFI) by near infrared spectroscopy FVmean, mean blood...

Ngày tải lên: 12/08/2014, 23:21

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Ngày tải lên: 13/08/2014, 11:22

... cigarette package In third-generation rotary pumps the spinning rotor floats by means of either a magnetic field or hydrodynamic levitation, never touching the pump housing, thereby eliminating mechanical...

Ngày tải lên: 13/08/2014, 19:20

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