Brain imaging techniques

Brain imaging technique that allows visualization of the brain, in order to understand which brain regions are involved in specific functions. Its functioning is based on the measurement of the regional cerebral blood flow which increases when a specific brain region is activated. Its use is similar to that of positron emission tomography (PET). 

Blomstrand-Jorgensen chain theory, 1, 6 Blood coagulation calcium, 6,591 Blood/brain barrier brain imaging techniques technetium complexes, 6, 991 technetium complexes, 6,985 Blood plasma... 

Quirion R, Dam TV, Sarrieau A, Rostene W. 1989. Receptor autoradiography in neuropeptide research. Brain imaging techniques and application. Sharif NA, Lewis ME, editors. Chichester, England Ellis Horwood pp. 77-94. 

Brain imaging (preferably MRI) to look for evidence of structural damage is essential after TBI. MRI, while more expensive and time-consuming, can sometimes detect small brain lesions that are missed by CT, especially in the frontal and temporal lobes that are common sources of psychiatric complications after TBI. In addition, an electroencephalogram (EEG) can detect seizure activity or other signs of abnormal brain function. Although they are not yet part of the routine post-TBI evaluation, the so-called functional brain imaging techniques such as positron emis-... 

In SUMMARY, it would appear that a detailed knowledge of the pharmacokinetics of the main groups of psychotropic drugs is only of very limited clinical use. This is due to limitations in the methods for the detection of some drugs (e.g. the neuroleptics), the presence of active metabolites which make an important contribution to the therapeutic effect, particularly after chronic administration (e.g. many antidepressants, neuroleptics and anxiolytics), and the lack of a direct correlation between the plasma concentration of the drug and its therapeutic effect. Perhaps the only real advances will be made in this area with the development of brain imaging techniques whereby the concentrations of the active drug in the... 

Before the development of brain imaging techniques, neuroanatomical correlates were primarily related to structural lesions of the CNS. Despite the fact that abnormalities have been found in both schizophrenia and affective illness, interest in the neuropathology of mood disorders has not been as intense as for schizophrenia. 

Another brain imaging technique is magne-toencephalography (MEG).C n It has been uniquely valuable in mapping the sensory regions of the human cerebral cortex. Looking ahead, optical methods, which include use of infrared radiation, are also under development.0 They may not be adequate for study of the human brain but can be used for smaller animals, for studies of embryonic development, etc. 

Other studies using brain imaging techniques to show correlations between brain activity and the extent of reported placebo effects have demonstrated that some people show greater placebo responses than others, but that everyone appears to be capable of having such a response. There is also increasing proof... 

An overview of the methods available for in vivo monitoring would not be complete without mentioning brain imaging techniques (Volkow et ah, 1994, 2002 ... 

In the last few years, attention has been focused on the effects of ecstasy on the human brain. A number of studies have been carried out in ecstasy users with application of very sophisticated brain imaging techniques such as PET scanning (positron emission tomography). The results, although controversial are suggestive of damage similar to that seen in animal models. Some other studies have been carried out investigating the effects of MDMA on the metabolism of serotonin in the brain, that have involved... 

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