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  • 1
    ISSN: 1432-1084
    Keywords: MRI ; Psychiatry ; white matter
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract T2-weighted MRI scans of psychiatric patients with at least one white matter lesion (WML) were compared to 83 non-psychiatric controls with respect to WML number and distribution. MANOVA results in significant effects for sex, age and patient group with respect to WML number. In the psychiatric patients, infratentorial WML prevailed in organic psychoses. WML number was positively correlated with age with the exception of rith temporal lobe WML. Based on WML spatial distribution, four patient clusters were found. Clusters with widely distributed WML comprised older patients with late onset of illness; right frontal and temporal WML were associated with mania, euphoria and unstable mood.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 21 (1992), S. 0 
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The clinicopathological features of two infants with desmoplastic supratentorial neuroepithelial tumours are described. The cases were similar to the 26 cases reported previously as desmoplastic infantile ganglioglioma and superficial cerebral astrocytoma attached to dura. Neuronal differentiation was absent on routine stains, but was immunohistochemically established. We review the literature and suggest classifying this clinicopathological entity by using a general designation such as desmoplastic supratentorial neuroepithelial tumours of infancy, a term which indicates the variability in the amount and lines of differentiation.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1084
    Keywords: White matter lesions ; Cerebrovascular disease ; Magnetic resonance imaging ; Brain infarction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract To establish data about prevalence, number and topography of “unspecific” white matter lesions as seen on MRI, the T2-weighted MRI scans of 83 patients with hyperintense focal white matter changes were reviewed. Patients with known inflammatory central nervous system disease were excluded. There was an approximately linear increase in prevalence and number of lesions with age. Prevalence ranged from 18% in the third decade to over 90% in those over 70 years. We found a close correlation with concomitant periventricular hyperintensity. However, rating of Virchow-Robin spaces did not correlate with the number of white matter lesions. Both hemispheres were involved nearly equally with a minimal non-significant right side preponderance. Lesions showed a strong predilection for the frontal and parietal paraventricular “watershed” areas.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 33 (1991), S. 341-345 
    ISSN: 1432-1920
    Keywords: Arachnoid cysts ; Volume measured ; Cyst growth
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The volumes of intracranial arachnoit cysts were measured in 136 CT scans of 86 patients. Absolute and relative cyst size was calculated. Left hemisphere and middle cranial fossa location prevailed. A slight negative correlation of relative cyst size with age (r=−0.21, NS) disappeared when analysis was restricted to the adult age group (≥20 years). After the sample was divided into two groups according to relative cyst size (cysts less than mean volume vs cysts greater than mean volume), small AC showed no correlation with age, while large AC correlated positively with age (r=0.79,P〈0.05). A subgroup of large AC appears to expand with time, while the majority of small AC remain unchanged.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1920
    Keywords: Cardiac myxoma ; Stroke ; Cerebrovascular disease
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Six of 12 patients with histologically verified left atrial myxoma showed CT and MRI evidence of ischemic lesions of varying size and location, predominantly in the left hemisphere.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 40 (1998), S. 71-75 
    ISSN: 1432-1920
    Keywords: Key words Magnetic resonance imaging ; Amyotrophic lateral sclerosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Cortical motor neurone loss and corticospinal tract (CST) degeneration are typical of amyotrophic lateral sclerosis (ALS). It is a matter of debate whether qualitative assessment of the CST by MRI is useful in the diagnosis. It is also an open question whether quantitative determination of the T2 relaxation times can improve its value. Signal intensity along the CST on 14 consecutive slices was assessed using arbitrary visual rating on double-echo T2-weighted and proton-density spin-echo images of 21 patients with ALS and 21 age- and sex-matched controls. T2 was determined quantitatively. On the T2-weighted images the patients' ratings did not differ from that of controls. The T2 of patients and controls showed no statistical difference in any slice. There was no correlation between T2 and patient age, duration of the disease, or predominant bulbar, lower or upper motor neurone signs. The only correlation between MRI findings and disease was on the proton-density images: all cases in which the CST was poorly seen were controls; a clearly high-signal CST was seen only in the patients. High conspicuity of the CST was thus specific but not sensitive for the diagnosis of ALS. T2-weighted images and measurement of T2 were not useful for diagnosis.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 41 (1999), S. 563-566 
    ISSN: 1432-1920
    Keywords: Key words Septum pellucidum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Absence of the septum pellucidum in the human is a rare congenital anomaly. Previous reports suggest it is almost always associated with other brain anomalies. However, MRI in two patients with absence of the septum pellucidum presented here, indicates that this anomaly may occur without associated anomalies. It may be one manifestation of a spectrum of developmental anomalies. One patient presented with schizophrenic psychosis; developmental disturbances in limbic areas are believed to be associated with schizophrenia. Agenesis of the septum pellucidum may indicate abnormal development of limbic structures and it may be associated with anomalies, such as cytoarchitectural disturbances of cortical layers, as yet undetectable by MRI.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1920
    Keywords: Key words Morphine sulphate intoxication ; Leukoencephalopathy ; Neurotoxicity ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report a 14-year-old girl with an unusual pattern of leukoencephalopathy after intentional intoxication with morphine sulphate tablets. Toxicological analysis showed exceedingly high levels of morphine and its metabolites. MRI disclosed a leukoencephalopathy with high signal from the centrum semiovale, corpus callosum and cerebellar white matter on T2-weighted images. These findings could be only partially explained by a hypoxic-ischaemic event; neurotoxic effects must be considered in this atypical leukoencephalopathy.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Myelits ; Querschnittssymptomatik ; Multiple Sklerose ; ADEM ; RDEM ; Key words Myelitis ; Tetraparesis ; Multiple sclerosis ; ADEM ; RDEM
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Recurrent transverse myelitis is a rare inflammatory demyelinating disorder, which is distinguished from acute monophasic transverse myelitis and from MS. We present two patients with recurrent transverse myelitis, who developed an acute remitting tetraparesis and sensible deficits with a cervical level. They were followed for 4 and 5 years. MRI showed an isolated lesion with contrast enhancement in the spinal cord but no pathological cranial findings. Oligoclonal bands were negative in repeated lumbar punctures. One patient showed lymphocytic pleocytosis during the first and second attack. Somatosensory and motor evoked potentials were abnormal during relapses while visually and brainstem acustically evoked potentials (VEP and BAEP) stayed within limits. Laboratory examinations for bacterial, viral or parasitic infections, antinuclear antibodies, Angiotensin-converting enzyme and the sedimentation rate were also normal. The differential diagnosis will be discussed in view of previously reported series. We give a review of the current literature and discuss the differential diagnoses.
    Notes: Zusammenfassung Die rezidivierende Querschnittsmyelitis (RQM) ist eine seltene entzündliche, vorwiegend demyelinisierende Erkrankung des Rückenmarks, die von der akuten monophasischen Querschnittsmyelitis und von der multiplen Sklerose mit Rückenmarksbeteiligung abgegrenzt wird. Wir stellen 2 Patienten mit mehrfach jeweils akut auftretender Tetraparese vor. In der Beobachtungszeit von 4 bzw. 5 Jahren zeigte die Magnetresonanztomographie (MRT) bei beiden einen solitären Herdbefund im Rückenmark bei jeweils unauffälligem cranialen Befund. Oligoklonale Banden wurden bei mehrfachen Liquoruntersuchungen nicht nachgewiesen. Bei einem Patienten fand sich im Liquor eine lymphozytäre Pleozytose während der ersten 2 Schübe. Die motorisch- und somatosensorisch-evozierten Potentiale (MEP und SSEP) waren pathologisch verändert, die visuell und akustisch evozierten Potentiale hingegen immer unauffällig. Laboruntersuchungen zum Nachweis bakterieller, vitaler und parasitärer Erreger, antinukleärer Antikörper, Angiotensin-konvertierendem Enzym sowie der BSG erbrachten keinen pathologischen Befund. Diese Patienten werden mit differentialdiagnostischen Überlegungen beschrieben und vor dem Hintergrund der Literatur diskutiert.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Septum pellucidum ; Entwicklungs- störungen ; Zerebrale Fehlbildungen ; Schizophrenie ; Magnetresonanztomographie ; Key words Septum pellucidum ; Developmental disorder ; Cerebral malformations ; Schizophrenia ; MRI
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary Absence of the septum pellucidum is a rare developmental disorder of the human brain. Previous reports focused on the association with other cerebral anomalies. We present MRI scans showing an isolated absence of the septum pellucidum. The patient was suffering from a schizophrenic psychosis. Mental retardation or epileptic seizures, which are often found in more complex developmental brain disorders, were not observed. The septal area is part of the limbic system and aplasia of the septum pellucidum could indicate developmental anomalies of the limbic system. The concept of cerebral maldevelopment and the limbic system in schizophrenic psychosis is discussed.
    Notes: Zusammenfassung Die isolierte Aplasie des Septum pellucidum gehört zu den seltenen dysplastischen Fehlbildungen des Gehirns. Während in älteren Arbeiten das Fehlen des Septum pellucidum meistens im Zusammenhang mit weiteren zerebralen Fehlbildungen berichtet wird, so zeigen neuere Untersuchungen doch häufiger auch isolierte Aplasien ohne weitere Fehlbildungen des Gehirns. Dabei scheint ein breites Spektrum der Fehlbildungen von komplexen Hirnfehlbildungen bis hin zur einfachen Aplasie des Septum pellucidum zu reichen. Kasuistisch wird über die Aplasie des Septum pellucidum bei einem Patienten berichtet, welche kernspintomographisch im Rahmen der routinemäßig durchgeführten bildgebenden Diagnostik gefunden wurde. Klinisch wurde bei dem Patienten eine hebephrene Psychose diagnostiziert. In der Ätiologie der schizophrenen Psychosen werden dysontongenetische Mechanismen diskutiert, v.a. Migrationsstörungen in limbischen Strukturen. Eine erhöhte Inzidenz von Anomalien des Septum pellucidum, v.a. Septum-pellucidum-Zysten ist von mehreren Autoren bei schizophrenen Patienten berichtet worden. Die Bedeutung des Septum pellucidum und des Septum verum als Bestandteile des limbischen Systems werden erörtert und eine mögliche Relevanz für das Konzept der dysontogenetischen Ätiologie schizophrener Psychosen wird diskutiert.
    Type of Medium: Electronic Resource
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