Functional Brain Imaging |
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Page 203
... tumors . The rCBV tends to be increased . The OER and rCMRO2 are generally lower . After tumor treatment with radiotherapy or chemotherapy , the rCMRglc increases for reasons that are not clear1 191,192 ( Figs . 5-15 and 5-16 ) . FDG ...
... tumors . The rCBV tends to be increased . The OER and rCMRO2 are generally lower . After tumor treatment with radiotherapy or chemotherapy , the rCMRglc increases for reasons that are not clear1 191,192 ( Figs . 5-15 and 5-16 ) . FDG ...
Page 231
... TUMORS Using rCBF agents to evaluate meningiomas is of marginal utility . Standard static SPECT imaging of these tumors shows lesion - to - normal ( L / N ) tissue ratios of less than 1. Dynamic SPECT systems using early acquisitions ...
... TUMORS Using rCBF agents to evaluate meningiomas is of marginal utility . Standard static SPECT imaging of these tumors shows lesion - to - normal ( L / N ) tissue ratios of less than 1. Dynamic SPECT systems using early acquisitions ...
Page 449
... tumors is not always possible on the basis of NAA / Cho and NAA / Cr ratios , but some character- istic patterns can be observed for different histologic tumor types . Meningiomas typically show a drastic decrease in NAA and Cr signals ...
... tumors is not always possible on the basis of NAA / Cho and NAA / Cr ratios , but some character- istic patterns can be observed for different histologic tumor types . Meningiomas typically show a drastic decrease in NAA and Cr signals ...
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