Functional Brain Imaging |
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Page 150
... field , Bo : all spins align either with or against the static field . Fig . 4-6 . A spinning proton behaves like a tiny bar mag- net . because the electron magnetic field is produced only in the presence of an external magnetic field ...
... field , Bo : all spins align either with or against the static field . Fig . 4-6 . A spinning proton behaves like a tiny bar mag- net . because the electron magnetic field is produced only in the presence of an external magnetic field ...
Page 425
... magnetic field : a different measured frequency corre- sponds to the nuclei effectively experiencing a differ- ent magnetic field strength , Beff = Beff Bo Blocal ( 10-2 ) This local magnetic field contribution , Blocal , can be either ...
... magnetic field : a different measured frequency corre- sponds to the nuclei effectively experiencing a differ- ent magnetic field strength , Beff = Beff Bo Blocal ( 10-2 ) This local magnetic field contribution , Blocal , can be either ...
Page 426
... magnetic field is produced . Chemical shifts originate from the contribution by the electron magnetic fields . The electron magnetic field produced by the appli- cation of an external magnetic field can be either diamagnetic ( opposing ...
... magnetic field is produced . Chemical shifts originate from the contribution by the electron magnetic fields . The electron magnetic field produced by the appli- cation of an external magnetic field can be either diamagnetic ( opposing ...
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 |
Common terms and phrases
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