Functional Brain Imaging |
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Page 262
... effects can be observed at significantly lower concentrations . 98 Another lanthanide paramagnetic compound used in experimental studies is dysprosium ( Dy ) . This agent does not have as much of a direct relaxivity effect as Gd - DTPA ...
... effects can be observed at significantly lower concentrations . 98 Another lanthanide paramagnetic compound used in experimental studies is dysprosium ( Dy ) . This agent does not have as much of a direct relaxivity effect as Gd - DTPA ...
Page 263
... effect that increases with increasing diffusion times ( i.e. , TE ) . As mentioned previously , these effects can be distinguished from intrinsic spin- spin relaxation through the use of relatively diffusion - insensitive sequences such ...
... effect that increases with increasing diffusion times ( i.e. , TE ) . As mentioned previously , these effects can be distinguished from intrinsic spin- spin relaxation through the use of relatively diffusion - insensitive sequences such ...
Page 273
... effects on tissue signal may be lessened since there is less time for exchange . This is particularly true in the brain with an intact BBB where only small T1 effects on the tissue signal are observed . " These small effects can perhaps ...
... effects on tissue signal may be lessened since there is less time for exchange . This is particularly true in the brain with an intact BBB where only small T1 effects on the tissue signal are observed . " These small effects can perhaps ...
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