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  • 1
    Electronic Resource
    Electronic Resource
    Plaque surface and microembolic signals in moderate carotid stenosis (1999)
    Springer
    Italian journal of neurological sciences 20 (1999), S. 179-182 
    Details
    ISSN: 1126-5442
    Keywords: Key words Angiography ; Carotid plaque ; Microembolism ; Transcramial Doppler
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We performed Transcranial Doppler Monitoring to detect microembolic signals (MES) in 47 patients with moderate (30%–69%) carotid stenosis proven by selective angiography. We compared the occurence of MES with the clinical characteristics of stenosis (symptomatic or asymtpomatic) and the angiographic plaque features (nonulcerated, deep ulceration, superficial ulceration, ulceration with flap, or ulceration without flap). For these cases there was no indication for endarterectomy, nevertheless we thought it would be useful to identify risk subgroups that might benefit from surgical treatment. MES were detected in 17.9% of the stenoses with a prevalence (p 〈 .01) in symptomatic cases (25%) compared to asymptomatic cases (14.3%). There was a significant correlation of MES with plaque ulceration (p 〈 .01) and particularly with ulceration without flap (p 〈 .01). No difference between deep and superficial ulceration was observed. The availability of prospective data on this topic might be useful to select subgroups of patients with moderate carotid stenosis at risk for embolism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s100720050029
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  • 2
    Electronic Resource
    Electronic Resource
    MRI and MR angiography of vertebral artery dissection (1997)
    Springer
    Neuroradiology 39 (1997), S. 329-340 
    Details
    ISSN: 1432-1920
    Keywords: Key words Arteries ; vertebral ; Arteries ; dissection ; Magnetic resonance imaging ; Magnetic resonance angiography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A review of 4,500 angiograms yielded 11 patients with dissection of the vertebral arteries who had MRI and (in 4 patients) MR angiography (MRA) in the acute phase of stroke. One patient with incidental discovery at arteriography of asymptomatic vertebral artery dissection and two patients with acute strokes with MRI and MRA findings consistent with vertebral artery dissection were included. Dissection occurred after neck trauma or chiropractic manipulation in 4 patients and was spontaneous in 10. Dissection involved the extracranial vertebral artery in 9 patients, the extra-intracranial junction in 1, and the intracranial artery in 4. MRI demonstrated infarcts in the brain stem, cerebellum, thalamus or temporo-occipital regions in 7 patients with extra- or extra-intracranial dissections and a solitary lateral medullary infarct in 4 patients (3 with intracranial and 1 with extra-intracranial dissection). In 2 patients no brain abnormality related to vertebral artery dissection was found and in one MRI did not show subarachnoid haemorrhage revealed by CT. Intramural dissecting haematoma appeared as crescentic or rounded high signal on T1-weighted images in 10 patients examined 3–20 days after the onset of symptoms. The abnormal vessel stood out in the low signal cerebrospinal fluid in intracranial dissections, whereas it was more difficult to detect in extracranial dissections because of the intermediate-to-high signal of the normal perivascular structures and slow flow proximal and distal to the dissection. In two patients examined within 36 h of the onset, mural thickening was of intermediate signal intensity on T1-weighted images and high signal on spin-density and T2-weighted images. MRA showed abrupt stenosis in 2 patients and disappearance of flow signal at and distal to the dissection in 5. Follow-up arteriography, MRI or MRA showed findings consistent with occlusion of the dissected vessel in 6 of 8 patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050418
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Spontaneous recanalization of carotid artery occlusion following non traumatic dissection (1989)
    Springer
    Neurological sciences 10 (1989), S. 361-367 
    Details
    ISSN: 1590-3478
    Keywords: Carotid occlusion ; spontaneous carotid dissection ; nonatherosclerotic carotid disorder ; spontaneous carotid recanalization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Abbiamo studiato 7 pazienti con occlusione dell'arteria carotide interna conseguente a dissezione arteriosa spontanea. Tutti i pazienti avevano presentato stroke, in uno associato con sindrome di Horner. L'esame dopplersonografico mostrava occlusione carotidea, ma solo lo studio angiografico permetteva di definire la diagnosi di questa patologia vascolare non aterosclerotica. Si osserva ricanalizzazione spontanea della carotide interna al controllo angiografico dopo 6–9 settimane in 6 casi, trattati solo con farmaci antiaggreganti. Solo in un pazienti i controlli seriati con doppler transcranico confermavano la persistenza dell'occlusione a distanza di sei mesi.
    Notes: Abstract We studied 7 patients with internal carotid occlusion following spontaneous arterial dissection. All presented strokes, in one associated with Horner's syndrome. The doppler examination showed carotid occlusion, but only angiography established the diagnosis of vascular disease. Spontaneous recanalization was observed in 6 cases, treated only by antiplatelet drugs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02333784
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Bilateral medial frontal infarction in a case of azygous anterior cerebral artery stenosis (1998)
    Springer
    Neurological sciences 19 (1998), S. 106-108 
    Details
    ISSN: 1590-3478
    Keywords: Azygous anterior cerebral artery ; Cerebral infarction ; Digital subtraction angiography ; Magnetic resonance imaging
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We describe the unusual case of a 63-year-old woman with a history of arterial hypertension who presented a sudden weakness of the lower limbs followed by mutism, akinesia and dyspraxia. Magnetic resonance images showed a bilateral medial frontal infarction. Digital subtraction angiography documented a right azygous anterior cerebral artery with severe stenosis in its sub-callosal tract; the left anterior cerebral artery showed mild hypoplasia with only sub-frontal and fronto-polar branches. No embolic source was documented. Afterwards the patient presented a gradual and partial recovery of both motor and cognitive functions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02427567
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    Paper (German National Licenses)
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