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  • 1
    ISSN: 0942-0940
    Keywords: Vertebro-basilar junction ; cerebral aneurysm ; 3-D CT angiography ; hypothermia ; cardiopulmonary bypass
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary This paper highlights two interesting cases of radial clipping of large aneurysms at the vertebro-basilar junction accompanied by a vascular anomaly, consisting of fenestration of the split basilar artery at its origin. Description of the inner and outer surface of the aneurysm were obtained pre-operatively, from analysis by 3D CT and 3D CT endoscopy of the form of the neck, parent vessels of the vertebral arteries on both sides, basilar artery and split basilar artery, as well as other details of branching. The neck exhibited a broad base in both cases. The height of the neck extended to the internal acoustic meatus, and it was possible to expose the circumference of the aneurysmal neck, peripheral basilar artery and both vertebral arteries proximally with an anterior transpetrosal approach. Based on the size of the aneurysm and the site being the anterior surface of the brain stem, clipping (consisting of interruption of the occluded portion and reconstruction of the parent vessels) was performed. In the first case it was achieved protecting the brain by hypothermia and barbiturates under deep hypothermia with extracorporal circulation, and in the second case, a state of circulatory arrest was used. This paper documents the report of two cases along with other cases treated so far.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0942-0940
    Keywords: Basilar tip aneurysm ; transcrista galli approach ; interfalcine approach ; translamina terminalis approach
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Surgery for highly placed basilar bifurcation aneurysms is one of the most difficult operations in neurosurgery. Specific surgical techniques have been developed including the temporopolar, zygomatic, transzygomatic subtemporal, transclinoid trans-sellar transcavernous, and trans third ventricular approaches. The authors present some technical advances which have been developed for the transcristagalli translamina terminalis approach for the treatment of this aneurysm.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0942-0940
    Keywords: Dural AVM ; embolization ; aron alpha ; cyanoacrylate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report four cases of dural arteriovenous malformation (AVM) treated by a modified technique of embolization. Three cases had posterior fossa dural AVM and one had bilateral supratentorial dural AVM. The authors think that the best way to treat dural AVM is to close its nidus completely. This could be achieved by a safe and easy technique of embolization. The material used for embolization should intimately adhere to the vascular network and should not become fragmented. We used aron alpha (Ethyl-2-cyanoacrylate). This is a biological glue and it sets in a solid membranous form instantaneously on coming into the contact with an ionic medium. It does not get fragmented. Aron alpha was injected into the nidus of the AVM through a cannula inserted only into the main feeding artery in four cases of dural AVM reported here. Postoperative angiography showed complete obliteration of the AVM's, they did not fill either from the treated artery or from the untreated feeding arteries. The technique is easy and safe. There was no operative or postoperative complication. All the patients have remained asymptomatic to date,i.e. 2, 2, 6 and 7 1/2 years after the procedure.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0942-0940
    Keywords: Surface anatomy scanning ; brain metastasis ; surgical planning
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Surface anatomy scanning (SAS) is a powerful technique that uses T2-weighted magnetic resonance images (MRI) to visualize brain surface structures, and to precisely localize subcortical lesions. To overcome technical limitations of this method, synthesized SAS (SSAS) superimposes MR angiography (MRA) data on the SAS images. We describe our initial experience with surgical planning for the resection of metastases at the sensorimotor region in 5 patients using SSAS. Neurological deficits were assessed before and after surgical resection. Although 4 of 5 patients had mild to severe neurological deficits before surgery, three became symptom-free and no patient had an increased deficit after surgery. Our results undoubtedly provide palliative surgery for sensorimotor metastases. As SSAS is non-invasive and requires a short scanning time, this method could become a useful technique for the routine pre-operative simulation for surgery on brain surface lesions such as sensorimotor metastases.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 63 (1982), S. 23-30 
    ISSN: 0942-0940
    Keywords: Chronic vasospasm ; haematoma in the basal cistern ; CT ; subarachnoid haemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Haematoma in the basal cistern was classified into five grades. A little or moderate haematoma (1 + or 2 +) disappeared from the basal cistern in 3 or 4 days, however much or severe haematoma (3 + or 4 +) remained over a week. Vasospasm occurred in a high number of the cases in which the haematoma was recognized in the basal cistern later than 4 days after SAH not only in operative case but also in conservative case. However vasospasm occurred rarely in cases with early operation within 24 hours after onset except for cases with severe packed haematoma (4+) in the basal cistern.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 86 (1987), S. 111-114 
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The authors report a new experimental model for the study of hydrocephalus. Hydrocephalus was produced in C 57 black mouse by transplanting human glioma cultured cells. 20% of the animals developed hydrocephalus while the incidence of spontaneous hydrocephalus is only 1%. The transplanted cells disappeared within 72 hours. The mouse developed progressive hydrocephalus. There was no evidence of blockage of CSF pathways. The only abnormal microscopic finding was a scattered collection of lymphoid cells in some of the animals, which may be a hypersensitivity reaction to the cells. A similarly hypersensitive reaction to the foreign maternal protein which may enter the foetal circulation is suggested as the cause of hydrocephalus in some of the cases of congenital hydrocephalus.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 59 (1994), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: TO ESTABLISH a sterilization method with minimal heating, the effect of high pressure on bacteriostasis was studied using thermoduric spores of Bacillus stearothermophilus. After exposure to 800 MPa for 60 min at 60°C, the spore count decreased from 106 to 102/mL. However, exposure to the same pressure at room temperature did not cause significant change in spore numbers. The synergistic effect of high pressurization on the bacteriostatic action of sucrose fatty acid ester at low concentration (〈 10 ppm) was pronounced with sucrose palmitic acid ester but not with sucrose stearic acid ester. Oscillatory pressurization was more effective for spore sterilization. Six cycles oscillation of 5-min pressurization with 400 MPa at 70°C decreased the spore count from 106 to 102/mL, and with 600 MPa, complete sterilization was achieved.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 1295-1296 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. A-I, Duration of action potential of an atrial fibre when using a threshold driving stimulus (7 V.), and A-2 the change in duration when driving stimuli were of twice threshold strength. JB-1, The progressive shortening of the action potential when driving of quiescent atrial fibres was ...
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0006-291X
    Keywords: [abr] ARMS; amplification refractory mutation system ; [abr] LDH; lactate dehydrogenase ; [abr] PCR; polymerase chain reaction ; [abr] SSCP; single strand conformation polymorphism
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0378-1119
    Keywords: Recombinant DNA ; codon usage ; fruiting body formation ; fungi ; introns ; mushrooms ; zinc-binding motifs
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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