Functional Brain Imaging |
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Page 98
... lesser extent , fat . When placed in a strong magnetic field , these protons behave like tiny bar magnets and tend to orient in a direction along the magnetic field ( see Fig . 4-7 ) . In MRI a large current is passed through a low ...
... lesser extent , fat . When placed in a strong magnetic field , these protons behave like tiny bar magnets and tend to orient in a direction along the magnetic field ( see Fig . 4-7 ) . In MRI a large current is passed through a low ...
Page 282
... lesser extent at 0.5 T. 176 Arteriovenous oxygenation differences . Arterial blood typically contains approximately 20 ml oxygen / 100 ml blood at a partial pressure of 100 mm Hg . As the blood flows from the heart into the cerebral ...
... lesser extent at 0.5 T. 176 Arteriovenous oxygenation differences . Arterial blood typically contains approximately 20 ml oxygen / 100 ml blood at a partial pressure of 100 mm Hg . As the blood flows from the heart into the cerebral ...
Contents
Introduction to Brain Imaging | 1 |
Computerized Axial Tomography | 97 |
Magnetic Resonance Imaging | 145 |
Copyright | |
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Functional Brain Imaging William W. Orrison,Jeffrey Lewine,John Sanders,Michael F. Hartshorne Limited preview - 2017 |
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abnormal activity ALFMA arterial auditory Axial axon basal ganglia brain capillary cells central central sulcus cerebral blood flow chemical shift clinical coil computed computed tomography contrast agent cortex cortical decreased demonstrating detection diffusion dipole disease effects encoding epilepsy extracellular field strength FMRI focal frequency functional Gd-DTPA glucose gradient HMPAO infarction inhomogeneous injection lesions Magn Reson magnetic field magnetic resonance imaging mapping measured membrane metabolism methods motor msec neoplasms nerve nervous system neural neuromagnetic neurons normal Nucl nuclei oxygen paramagnetic patients pattern peak perfusion phase positron emission tomography posterior processing projections proton pulse Radon transform rCBF receptors relaxation scan seizures sensitivity sequences signal changes signal intensity slice SMRM Annual Meeting somatosensory spatial SPECT spectra spikes spin echo stimulation studies T2-weighted techniques temporal lobe thalamus tion tissue tumors uptake visual voxel white matter