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  • 1
    Electronic Resource
    Electronic Resource
    Book reviews (1991)
    Springer
    Neurosurgical review 14 (1991), S. 327-328 
    Details
    ISSN: 1437-2320
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00383274
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Book reviews (1994)
    Springer
    Neurosurgical review 17 (1994), S. 321-322 
    Details
    ISSN: 1437-2320
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306827
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Book reviews (1992)
    Springer
    Neurosurgical review 15 (1992), S. 73-77 
    Details
    ISSN: 1437-2320
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02352074
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Transcranial Doppler diagnosis of cerebral vasospasm following subarachnoid haemorrhage: Correlation and analysis of results in relation to the age of patients (1994)
    Springer
    Acta neurochirurgica 127 (1994), S. 32-36 
    Details
    ISSN: 0942-0940
    Keywords: Age ; Doppler velocimetry ; subarachnoid haemorrhage ; vasospasm
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A retrospective analysis was undertaken to determine whether cerebral vasospasm following subarachnoid haemorrhage (SAH) correlates with the age of patients. For at least 3 weeks after bleeding 80 subjects underwent very close follow-up with clinical examination and transcranial Doppler records of the blood velocities within the basal cerebral arteries. Firstly a correlation between measured maximal mean blood flow velocities and age was made. Secondly, according to their age and the maximum of recorded mean velocitites (v), the patients were divided into groups as follows: age 55 years or less, age more than 55 years; and maximum velocity v1〈90cm/s, 90cm/s〈v2〈120cm/s, 120cm/s〈v3〈160cm/s, v4〉160cm/s. There was a significant correlation of the measured maximum mean velocities and the age of the patients (r =−0.525, p〈0.01). With regard to the velocity groups there was a significant (chisquared statistic for contingency tables, p〈0.01) difference between both age-groups: 32% (n=18) of the younger fell into group v4 with maximum mean velocities of more than 160cm/s, but none of the older had such. Vice versa, 63% (n=15) of the older compared with only 14% (n=8) of the younger fell into group v1 with maximum mean velocities of less than 90 cm/s. Clinical follow-up also depicted differences between both age groups. 13 of 18 younger patients with maximum mean velocities 〉160 cm/s exhibited symptomatic vasospasm with a delayed neurological deficit. This typical course did not occur in the older age group. We conclude from this analysis that the increase of blood velocity in the basal cerebral arteries following subarachnoid haemorrhage depends on the age of the patient. Furthermore, young patients will be more prone to a delayed ischaemic deficit. On the other hand, older patients may also suffer ischaemic deficits following subarachnoid haemorrhage but often without measurable vasospasm according to transcranial Doppler criteria and without the typical delayed appearance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01808543
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  • 5
    Electronic Resource
    Electronic Resource
    Cerebral Blood Flow Velocities After Subarachnoid Haemorrhage in Relation to the Amount of Blood Clots in the Initial Computed Tomography (1998)
    Springer
    Acta neurochirurgica 140 (1998), S. 573-578 
    Details
    ISSN: 0942-0940
    Keywords: Keywords: Age; computed tomography; Doppler velocimetry; subarachnoid haemorrhage.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary  In 72 patients with acute subarachnoid haemorrhage (SAH) the relationship between the amount of subarachnoid blood clots detected by initial cranial computed tomography (CCT) up to 48 hours after bleeding and the later development of vasospasm, established by blood flow velocity measurement with transcranial Doppler ultrasound (TCD) was investigated. The serial Doppler examinations started within the first 72 hours after SAH and were carried out every second day up to three weeks. Each Doppler recording was accompanied by a neurological examination. Patients classified as Hunt and Hess grade V were excluded from the study. All patients with remarkable brain oedema in CCT or with intracranial pressure above 25 mmHg were also excluded. Because of the well known age-dependence of vasospasm after SAH, two age groups were formed.  A statistically significant correlation (p〉0.05) between blood flow velocities and blood load after SAH was not found. The mean age of the investigated 72 individuals was 48.9 years (14 up to 76 years). 47 patients were younger than 56 years. Linear regression analysis indicated a correlation with a quite low significance level (r=0.350, p〈0.025) between TCD blood flow velocities and blood load in CCT in these younger subjects. No significant correlation (p〉0.05) between these two variables could be established in the 25 patients older than 55 years. In a second step an intra-individual comparison of side-to-side differences in TCD and CCT was made. There were no significant differences in blood flow velocities between subjects with or without side-to-side differences in cisternal blood load.  It is concluded that the amount of blood visible on initial CCT after SAH is not a powerful predictor of cerebral blood flow velocities measured by TCD.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s007010050142
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  • 6
    Electronic Resource
    Electronic Resource
    Sensitivity and specificity of MRA in the diagnosis of neurovascular compression in patients with trigeminal neuralgia (1998)
    Springer
    Neuroradiology 40 (1998), S. 88-95 
    Details
    ISSN: 1432-1920
    Keywords: Key words Magnetic resonance imaging ; Trigeminal neuralgia ; Neurovascular compression ; Multiple sclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The published rates of operatively confirmed neurovascular compression as the cause for trigeminal neuralgia range from 10 % to nearly 100 %. High-definition magnetic resonance angiography (MRA) was performed in 27 consecutive patients (in 6 cases with 3D reconstructions) to show neurovascular compression preoperatively. The MRA findings were compared with the relationship between the Vth nerve and the surrounding vessels at surgery. In 23 patients MRA showed present neurovascular compression in accordance with surgical findings (18/27 in complete accordance of type and side of vessel, site and direction of compression). One woman had no neurovascular compression either on MRA or intraoperatively. One MRA prediction of neurovascular compression was false, and two results were false negative. The sensitivity of MRA was therefore 88.5 % but the specificity only 50 %, if surgical findings are the reference. In one patient with right trigeminal neuralgia MRA revealed bilateral neurovascular compression of the Vth nerves. Therefore, the overall specificity of MRA might be below 50 %. In one patient with multiple sclerosis, the decision to operate was markedly influenced by the clear finding of neurovascular compression on MRA. The patient has been free from trigeminal pain for 149 weeks after microvascular decompression. In 6 patients, 3D reconstructions of the MRA data were performed. The images helped in 3D visualisation of the operation, but did not yield new information about the nature of the vessels revealed, or the site, direction or side of the neurovascular compression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050546
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  • 7
    Electronic Resource
    Electronic Resource
    Functional and morphological abnormalities in temporal lobe epilepsy: a comparison of interictal and ictal EEG, CT, MRI, SPECT and PET (1987)
    Springer
    Journal of neurology 234 (1987), S. 377-384 
    Details
    ISSN: 1432-1459
    Keywords: Temporal lobe epilepsy ; Drug-resistant seizures ; EEG video monitoring ; Morphological neuro-imaging ; Functional neuro-imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Ten patients suffering from drug-resistant complex partial seizures, with EEG abnormalities in the temporal region, were studied by means of non-invasive electrophysiological techniques (video-monitored, 16-channel, prolonged surface and sphenoidal EEG) as well as by imaging techniques (CT, MRI, SPECT and PET). Analysis of interictal and ictal EEG indicated the localization of epileptic activity in one side in eight cases. CT demonstrated focal abnormalities in three, SPECT in five unequivocally (in another four questionably, with the same lateralization as indicated by PET), MRI in eight, and PET in all cases. While only EEG provided specific diagnostic information, the focus definition was consistently good on PET images, poor on CT scans, and generally good but less consistent on MRI.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00314081
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