Neurosurgical Applications of Transcranial Doppler Sonography

Authors: Harders, A.

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About this book

In 1981, the Norwegian physiologist and cyberneticist, Rune Aaslid, developed a device which made it possible to apply the transcranial Doppler sonographic technique in man. In 1983, Dr. Albrecht Harders took on the project of working out a clinically practicable method that would allow atraumatic measurements to be made of the blood flow velocity in the large branches ofthe circle of Willis. The technique has now become a competitor of the conventional methods of measuring the intracranial hemodynamics, including angiography and the xenon method of cerebral blood flow measurement. Harders proceeded from the assumption that the measurement of the blood flow velocity is more relevant for clinical diagnoses than the usual volume flow measurements. He stresses the very valuable application of the technique in detecting cerebral vasospasm before and after aneurysm surgery. The changes in the blood flow velocities measured by transcranial Doppler sonography in the individual vessel segments of the circle of Willis are interpreted with respect to the various factors that can effect such changes (collateral circulation in the circle of Willis, diameter of the vessel, vascular resistance, the general cardiovascular situation, arterial partial CO pressure, autoregulatory factors, position of body). The rate of 2 complications associated with angiography has thus been reduced, since the best time both for angiography and for surgery can be determined, and continuous TCD examinations show when the patient is out of a critical phase of cerebral vasospasm.

Table of contents (18 chapters)

  • Introduction

    Harders, Dr. med. habil. Albrecht G.

    Pages 1-1

  • Hemodynamic Principles

    Harders, Dr. med. habil. Albrecht G.

    Pages 3-5

  • Prinicples of Ultrasound Doppler Sonography

    Harders, Dr. med. habil. Albrecht G.

    Pages 6-11

  • Transcranial Doppler Device

    Harders, Dr. med. habil. Albrecht G.

    Pages 12-15

  • Transcranial Doppler Investigation Technique

    Harders, Dr. med. habil. Albrecht G.

    Pages 16-23

Buy this book

eBook $89.00
price for USA in USD (gross)
  • ISBN 978-3-7091-8868-2
  • Digitally watermarked, DRM-free
  • Included format: PDF
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Softcover $119.99
price for USA in USD
  • ISBN 978-3-211-81938-8
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
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Bibliographic Information

Bibliographic Information
Book Title
Neurosurgical Applications of Transcranial Doppler Sonography
Authors
Copyright
1986
Publisher
Springer-Verlag Wien
Copyright Holder
Springer-Verlag/Wien
eBook ISBN
978-3-7091-8868-2
DOI
10.1007/978-3-7091-8868-2
Softcover ISBN
978-3-211-81938-8
Edition Number
1
Number of Pages
X, 136
Topics