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  • 1
    Electronic Resource
    Electronic Resource
    Electroencephalographic investigations of traumatic apallic syndrome in childhood and adolescence (1977)
    Springer
    Acta neurochirurgica 39 (1977), S. 211-217 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Reports of electroencephalographic changes in cases of the traumatic apallic syndrome in children and adolescents are very rare. We tried to correlate special electroencephalographic patterns with the three different stages that are usually seen. We found high voltage subdelta and delta activity in the initial symptom complex, an EEG with dominating delta-theta activity and voltage of medium height corresponding to the fully developed stage, and a flat theta EEG in the stage of remission. The difficulties in interpretation of the changes, especially in children, are discussed. Longitudinal electroencephalographic studies are recommended for diagnosing complications, such as haematomas or palsies, and for prognosis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01406731
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  • 2
    Electronic Resource
    Electronic Resource
    Hydranencephaly—Clinical and neuropathological aspects (1979)
    Springer
    Acta neurochirurgica 47 (1979), S. 219-233 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We report a case of hydranencephaly with its clinical and morphological aspects. The origin of hydranencephaly is discussed. There is strong evidence of very early damage to the brain substance in this condition. Therefore this disease should not be regarded as a malformation. The diagnostic procedures are described and their values discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01406405
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  • 3
    Electronic Resource
    Electronic Resource
    Optimal therapy in medulloblastoma (1979)
    Springer
    Acta neurochirurgica 50 (1979), S. 117-125 
    Details
    ISSN: 0942-0940
    Keywords: Medulloblastoma ; Prognosis ; Radiotherapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty-eight children with medulloblastoma (19 boys and 9 girls) were treated at the Departments of Neurosurgery and Radiotherapy in Essen between 1969 and 1977, and were followed prospectively after surgical treatment and postoperative irradiation. Because different radiation techniques had been used, these patients were divided into two groups, one given a limited irradiation volume and the other irradiation of the entire central nervous system. The results obtained in the former group were inferior to those in the latter. All living patients in the second group are in good condition. Special attention is paid to the technique of irradiation and the factors which may influence prognosis. Even after the relatively short follow up period of one to five years, it may be concluded that high-dose irradiation of the entire central nervous system considerably improved the prognosis of medulloblastoma.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01813556
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Electroencephalography (EEG) after introduction of water soluble contrast media into cerebrospinal fluid (CSF) (1981)
    Springer
    Acta neurochirurgica 57 (1981), S. 75-82 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty-six patients undergoing Dimer X or Amipaque ventriculography or myelography underwent electroencephalographic investigations. In most cases EEG alterations were found. They ranged from general slowing to seizure potentials. These findings and their causes are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01665116
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  • 5
    Electronic Resource
    Electronic Resource
    Computerized tomography (CT), electroencephalography (EEG), and clinical symptoms in severe cranio-cerebral injuries (1979)
    Springer
    Acta neurochirurgica 45 (1979), S. 209-216 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the first six months of 1977 156 patients with craniocerebral injuries underwent computerized tomography. Twelve had severe deficits which led to neurosurgical interventions. Only five had space-occupying haematomas. CT was useful in detecting neurosurgical complications, whereas EEG was useful in staging the severity of the trauma. The two methods, the functional one of EEG and the morphological one of CT, are complementary, especially with regard to the posttraumatic course. The clinical symptoms are reflected by EEG better than by CT.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01769135
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  • 6
    Electronic Resource
    Electronic Resource
    CT imaging in lumbar disc disease. The value of multiplanar reconstructions (1983)
    Springer
    Acta neurochirurgica 67 (1983), S. 267-276 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A CT/T 8800 (General Electric) CT scanner was used to study lumbar disc disease in fifty patients. In seven patients so-called computed tomography mexrizamide myelography was performed, whereas in the remaining cases no contrast enhancement was used. Multiplanar reconstructions were done. Irradiation exposure was measured during the investigations and compared with data during conventional myelography. We found that lumbar CT scanning is not a screening method in cases of lumbar disease, but the aimed use gives further information about the underlying process and its differential diagnosis. Multidirectional reconstructions reduce the number of diagnostic errors. This procedure does not increase the radiation exposure dose in comparison with conventional myelography.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401428
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  • 7
    Electronic Resource
    Electronic Resource
    Clinical application of event related potentials in patients with brain tumours and traumatic head injuries (1986)
    Springer
    Acta neurochirurgica 80 (1986), S. 116-122 
    Details
    ISSN: 0942-0940
    Keywords: Event related potentials ; brain tumour ; traumatic head injury ; mental function
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Event related potential recording and psychometric evaluation of cognitive impairment were carried out on 21 patients with brain tumours, 21 patients with severe head injuries and 24 controls. The tumour and trauma patients who met the psychometric inclusion criteria for dementia, but not the non-demented patients, had significantly longer N2 and P3 latencies than the controls. In assessing individual patients P3 latency correctly differentiated between demented and non-demented patients in 81% of cases (for N2 latency 77%). Particularly P3 latency may provide a practical and objective measure of mental impairment in neurosurgical disorders producing dementia. Marked asymmetry in N2 and P3 amplitudes between hemispheres was observed in a number of cases. No significant relationship was found between diminution of N2 and P3 components and side of lesion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01812285
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  • 8
    Electronic Resource
    Electronic Resource
    Optic nerve trauma: Clinical, electrophysiological and histological remarks (1987)
    Springer
    Acta neurochirurgica 89 (1987), S. 16-27 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary 18 patients with post-traumatic visual disease of the optic nerve are presented. In the post-traumatic stage, visual evoked potentials were monitored. In amaurosis there was a high incidence of midface or frontobasal fractures. The severity of the trauma is not correlated with the severity of visual deficits. Flash evoked potential (FEP) findings were different: In most cases there was a correlation of clinical and FEP findings. In some we found false positive potentials in the acute stage. In smaller visual field deficits the alterations of FEP could not be correlated with the clinical disorders. FEP alterations depended on time. The pathophysiological mechanisms are discussed in regard to the pathological findings in 51 unselected autopsies with an investigation of the visual pathway from the intraorbital optic nerve to the visual cortex. Because of the different morphological alterations the clinical, neurological and ophthalmological examination should be followed by standard CT scanning to evaluate intracranial haematomas and by CT scanning with thin slices of the optic nerves and the soft tissue of the orbit. Visual evoked potentials (VEP) and in the unconscious patient, flash evoked potentials (FEP) do not give much more security for therapeutic decisions in comparison with former times. The histological findings do not support the hypothesis that operative decompression is successful.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01406662
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  • 9
    Electronic Resource
    Electronic Resource
    Electroencephalographic investigations in sellar tumours, with special regard to different methods of operative treatment (1978)
    Springer
    Acta neurochirurgica 44 (1978), S. 207-214 
    Details
    ISSN: 0942-0940
    Keywords: Pre- and postoperative electroencephalograms and sellar tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Sixty-six patients with tumours in the sellar region were examined. All were operated on either by the transfrontal or the transsphenoidal route. Pre- and postoperative longitudinal electroencephalographic investigations were performed. Preoperative electroencephalograms showed a normal frequency content in cases of intrasellar tumours or those reaching the chiasma. Nearly all cases had irregularities in the temporal regions. Tumours compressing the third ventricle had slower average frequencies and a general slowing in all cases. Besides these alterations unilateral delta waves or bitemporal dysrhythmic groups were sometimes found. A connection between extension of the tumour and its histological nature could not be found, but the operative approach influenced the electroencephalographic disturbances enormously. After a transfrontal approach and removal of the tumour the electroencephalogram was unchanged. Sometimes a mild transient bitemporal slowing was present. But after a transfrontal operative approach a general slowing was common, usually with focal marked slow activity in the right fronto-temporal area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402062
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  • 10
    Electronic Resource
    Electronic Resource
    Value of electroencephalography (EEG) before and after surgery of intracranial aneurysms (1979)
    Springer
    Acta neurochirurgica 47 (1979), S. 45-52 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Electroencephalographic (EEG) investigations were done in 36 patients with intracranial aneurysms, before and after surgery. Thirty five of them suffered from subarachnoid hemorrhage (SAH). Pre-operatively, there was no correlation between patients' age or sex and localisation of the aneurysm or degree of EEG disturbances. The most frequent finding was a generalised slowing, the degree of which depended on the time from bleeding to EEG. Focal abnormalities were due to spasms of the vessels or intracerebral haematomas. There was a high correlation with neurological deficits. Post-operatively, EEG disturbances became worse in 21 cases. Generalised and focal abnormalities increased. These were due to focal oedema and the operative approach. The EEG could be correlated very well with the findings from other investigative methods (CT scanning, angiography). The EEG, as a functional method, showed very well the whole state of the brain after bleeding and after operation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01404662
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