[On the informative value of coherence analysis in clinical EEG studies].

Within the framework of discussion about the informative value of the method of coherent analysis, results of successful clinical application of this method of EEG processing in different morbid conditions are reviewed. Not denying the theses proposed by the opponent about the imperfection of methodological maintenance of the EEG coherent analysis and incompatibility of the results received with different software, the ways of overcoming these difficulties are specified. First of all, it is offered to unify procedural conditions of the technique. The thesis of the opponent that calculation errors are influenced by hypothetical "noise" (all signals of the environment) is regarded skeptically, as it could not be found in patients with "zero" coherence with the diagnosis of brain death. Some doubts are cast upon the prospect of replacement of the coherent analysis with an artificial envelope of the modulated groups of waves in assessment of synchronous processes of the brain. It is concluded that all technological and methodological problems of application of the EEG coherent analysis existing now can be overcome.

[Single-photon emission computerized tomography in craniocerebral injuries in children]. / Odnofaznaia émissionnaia komp'iuternaia tomografiia pri cherepno-mozgovoi travme u detei.

The recognition of the localization and spread of traumatic damage to the brain in craniocerebral injury in children is a pressing problem. The authors studied the possibilities of monophoton emission computed tomography (MECT) with the use of the radiopharmaceutical preparation Ceretec in recognition and visualization of foci of traumatic damage to the brain in these patients. The study was conducted on 20 children with severe craniocerebral trauma in parallel with verification by computed X-ray tomography, electroencephalography and mapping of the brain potentials, and rheoencephalography. The results of the study showed high diagnostic possibilities of the method in detecting ischemic foci in the brain. A craniocerebral trauma in children was found to be characterized by multiple ischemic deficits in the damaged and intact hemispheres and particularly in the basal parts of the brain. The information obtained by the MECT method is independent in character and is not a duplicate of the findings of CT, EEG, REG, sonography, etc.

[Osteoscintigraphy in the evaluation of a bone transplant in cranioplasty in children]. / Osteotsintigrafiia v otsenke sostoianiia kostnogo transplantata pri kranioplastike u detei.

Scintigraphy of the skeleton with 99mTc-methylene diphosphonate was performed before operation and 3.6 and 12 mos. after allocranioplasty in 15 children aged 3 to 15 with posttraumatic defects of the bones of the cranial vault. Scintigraphic results were compared with x-ray and clinical findings. The interrelationship of the time course of a scintigraphic picture of an affected zone with x-ray findings of graft readjustment at different time after operation was established. In the authors opinion, combined x-ray and scintigraphic investigations of the cranial bones can be used for objective assessment of the morphofunctional state of a graft after allocranioplasty.