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Correlation of Angiographically Confirmed Vasospasm and Stenosis with Transcranial Doppler

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Neurosurgical Applications of Transcranial Doppler Sonography
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Abstract

After the Doppler measurements had indicated the possible existence of vasospasm, angiography was performed only in a few cases, at which time high Doppler shifts were measured. The diameter of the cerebral arteries was measured by the split image focussing technique according to Huber and Handa [85] from the angiograms in eight patients with vasospasm who had undergone delayed aneurysm surgery. When the frequencies were plotted against the corresponding vessel diameters, an inverse correlation of frequency and diameter could be established for the MCA and ICA (Fig. 52). No clear correlation could be found in the Al. All of the eight patients with angiographically confirmed vasospasm had frequencies above 3 kHz.

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© 1986 Springer-Verlag/Wien

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Harders, A.G. (1986). Correlation of Angiographically Confirmed Vasospasm and Stenosis with Transcranial Doppler. In: Neurosurgical Applications of Transcranial Doppler Sonography. Springer, Vienna. https://doi.org/10.1007/978-3-7091-8868-2_11

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  • DOI: https://doi.org/10.1007/978-3-7091-8868-2_11

  • Publisher Name: Springer, Vienna

  • Print ISBN: 978-3-211-81938-8

  • Online ISBN: 978-3-7091-8868-2

  • eBook Packages: Springer Book Archive

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