Titlebook: Neurosurgical Applications of Transcranial Doppler Sonography; Albrecht G. Harders Book 1986 Springer-Verlag/Wien 1986 Bypass.aneurysm.ang

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Natural Time Course of Vasospasm,id hemorrhage, vasospasm occurs in 0–4.2%, after which the incidence increases up to the 7th and 10th day, the maximum is reached between the 11th and 17th day. After this, the occurrence of vasospasm falls. These results were obtained in patients who had undergone angiography only twice or, at the

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Extracranial-intracranial Bypass,y [120], and Doppler sonography [39, 63, 69, 77, 139]. The patency of the anastomosis has been established postoperatively by the Doppler method [69, 76, 77, 83, 89, 193], by rCBF measurements [73, 199] or by angiography.

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Arteriovenous Malformations,ndications for surgery for AVMs include advanced age, absence of symptoms, and an unfavorable location of the lesion. Surgery is indicated when the patient is younger, has seizures which do not respond to medication, when the AVM is favorably located, and when there is intracerebral space-occupying

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Monitoring of Frequency Spectra in the MCA During Angiography,ies in the MCA were recorded transcranially while contrast agent was being applied. Shortly after 10 ml contrast medium was injected into the cervical carotid artery, a loud noise could be heard in the Doppler sonographic recording, which lasted for 10 seconds. After the autotransfusion of 10 ml blo

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