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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 236 (1989), S. 255-259 
    ISSN: 1432-1459
    Keywords: Japanese B encephalitis ; X-ray computed tomography ; Magnetic resonance imaging ; Geriatrics
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Neurological, computed tomography (CT) and magnetic resonance imaging (MRI) findings were recorded from 13 patients with Japanese encephalitis (JE) in the Kurume region diagnosed by serological criteria. The patients averaged 63 years of age, and 5 were older than 70 years. The serological data mostly indicated a primary response. Hemiplegia and tetraplegia were common, together with extrapyramidal signs. A few cases had a stroke-like onset and cerebral haemorrhage during the course of JE. CT and MRI in 7 cases revealed abnormalities in the thalamus and basal ganglia including the putamen. The CT and MRI findings from the acute stage to the convalescent stage were considered to be characteristic of JE.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Cerebral venograms of 21 clinical cases of midline anomalies of the brain and of 80 human fetuses between 3 and 8 months old were examined. the diagnostic value of the venogram was fully proven, particularly for the midline cerebral anomalies, where deep cerebral structures and configuration of the tentorium cerebralli were not well visualized by other neuroradiologic maneuvers. Abnormal structures of the deep cerebral veins as well as the dural sinuses in these malformations were proved to retain the venous structures in the early fetal period. The time of formation of these malformations was also inferred from the viewpoint of the venous development. Study of the fetal venous system was found quite useful for embryologic analysis and classification of congenital malformations of the brain.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1920
    Keywords: Japanese encephalitis ; Sequelae ; X-ray computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A follow-up study by CT and MRI in 3 cases of Japanese encephalitis (JE) was performed. Neurologically dementia, forced laughing, tetraplegia and parkinsonism were observed as sequelae. In the CT and MR scans about 3 years after the onset of JE, low-density areas (LDAs) or abnormal signal intensities had remained in the thalamus and basal ganglia. The abnormalities were also found in the brain stem. When the main lesions shown by CT and MRI were compared with those of the acute stage, T2-weighted MRI clearly revealed multiple small areas with high signal intensities, although those in the acute stage had shown diffuse abnormal signals. These findings may be useful in helping to identify JE a long time after the onset.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 2 (1971), S. 191-200 
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'auteur étudie les anomalies artérielles et veineuses dans 30 angiographies vertébrales de neurinomes de l'acoustique vérifiées chirurgicalement. Les anomalies angiographiques décrites préalablement sont confirmées, en particulier le déplacement et la nonvisualisation de l'artère cérébelleuse antéro-inférieure et des veines pétreuses. On relève en particulier le déplacement concave de l'artère cérébelleuse supérieure et la dilatation de l'artère marginale (artère bordante) dans le cas de ces tumeurs. L'auteur décrit une veine anormale qui est dilatée et refoulée vers l'arrière, entourant la masse. La mise en évidence de cette veine anormale inominée est très importante pour poser le diagnostic de neurinome de l'acoustique. On sait que des neurinomes de l'acoustique de plus de 2 cm de diamètre peuvent être démontrés de façon précise par l'angiographie vertébrale. Celle-ci donne également des informations très précieuses aux neuro-chirurgiens.
    Abstract: Zusammenfassung Die Vertebralis-Angiogramme von 30 Patienten mit Acusticus-Neurinomen wurden ausgewertet. In der vorliegenden Arbeit wird über die arteriellen und venösen Veränderungen im Detail berichtet. Besonders wird darauf hingewiesen, daß eine Verlagerung der A. cerebelli superior und der A. maginalis als wichtiges Zeichen für diese Tumoren anzusehen ist. Ferner findet sich eine abnormale Vene, die über dem Tumor liegt. Acusticus-Neurinome, die mehr als 2cm Durchmesser aufweisen, können mit der Vertebralis-Angiographie exakt bestimmt werden.
    Notes: Summary Vertebral angiograms in 30 surgically proven acoustic neurinomas are reviewed and arterial and venous abnormalities are analyzed in detail. Previously described angiographic abnormalities are confirmed including displacement and non-visualization of the anterior inferior cerebellar artery and the petrosal veins. In addition arched displacement of the superior cerebellar artery and the marginal artery is emphasized as an important finding in these tumours. Description is given of an abnormal vein which is enlarged and displaced posteriorly in an arcuate fashion over the mass. This unnamed abnormal vein offers one of the most important findings in the diagnosis of acoustic neurinomas. It is concluded that acoustic neurinomas of more than 2.0 cm in diameter can be diagnosed accurately by vertebral angiography and important additional information for surgical removal can be obtained.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-1920
    Keywords: Key words Infarcts cerebral ; Magnetic resonance imaging Fluid-attenuated inversion-recovery sequences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Fluid-attenuated inversion-recovery (FLAIR) sequences have been reported to provide high sensitivity to a wide range of central nervous system diseases. To our knowledge, however, FLAIR sequences have not been used to study patients with acute cerebral infarcts. We evaluated the usefulness of FLAIR sequences in this context. FLAIR sequences were acquired on a 0.5 T superconducting unit within 8 h of the onset in 19 patients (aged 26–80 years) with a total of 23 ischaemic lesions. The images were reviewed retrospectively by three neuroradiologists, and the FLAIR images were compared with T2-weighted fast spin-echo images. All but one of the ischaemic lesions involving grey matter was clearly demonstrated on FLAIR images as increased signal intensity in cortical or central grey matter. FLAIR images were particularly useful for detecting the hyperacute cortical infarcts within 3 h of onset, which were not readily detected on the spin-echo images. In 9 of 11 patients with complete proximal occlusion, the distal portion of the cerebral artery was visible as an area of high signal intensity on FLAIR images.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Neuroradiology 39 (1997), S. 480-482 
    ISSN: 1432-1920
    Keywords: Key words Computed tomography ; Aneurysm ; Subarachnoid haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We have encountered a ruptured aneurysm as a filling defect in cisternal blood on CT in patients with acute subarachnoid haemorrhage (SAH), as high-attenuation blood can act as a contrast medium. We term this finding the “filling defect sign”. To evaluate the usefulness of the sign in the diagnosis of a ruptured aneurysm, we retrospectively analysed CT with 10-mm-thick slices obtained within 2 days of onset of SAH in 100 consecutive patients. The sign was observed in 30 of the 100 patients, and in 13 (68 %) of 19 patients with a ruptured aneurysm more than 10 mm in diameter. The filling defect sign is useful in predicting the site of rupture.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1432-1920
    Keywords: Key words Dural arteriovenous fistula ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report an anterior cranial fossa dural arteriovenous fistula with a varix mimicking an aneurysm on CT and MRI.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1920
    Keywords: Dural arteriovenous fistula ; Computed tomography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report an anterior cranial fossa dural arteriovenous fistula with a varix mimicking an aneurysm on CT and MRI.
    Type of Medium: Electronic Resource
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