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Journal of Ultrasound in Medicine, Vol 12, Issue 7 395-401, Copyright © 1993 by American Institute of Ultrasound in Medicine
Imaging of the vertebrobasilar system by transcranial color-coded real-time sonography
G. Becker, A. Lindner and U. Bogdahn
The vertebrobasilar system was investigated in 75 persons by TCCS to
evaluate the applicability and diagnostic capacity of this transcranial
Duplex technique. Transforaminal and transtemporal acoustic windows were
employed to identify the vertebral arteries, basilar artery (PCA) and major
branches of the vertebrobasilar system. The frequency of identifying the
basilar artery and the PCA ranged from 84 to 94% but was poor for the
distal segment of the basilar artery (45.3%). The origin of the basilar
artery was disclosed by transcranial Duplex sonography at an average depth
of 7.0 cm (range 6.0 to 8.0 cm). The assignment of the obtained flow
signals to specific vascular segments was improved by this new technique.
In addition, four persons received a maximum of six intravenous injections
of a transpulmonary stable sonographic contrast agent (SHU 508 A) to
enhance Doppler signal intensity derived from the vertebrobasilar system.
The vascular trunk and all major branches of the vertebrobasilar system
were identified in these four persons. We conclude that TCCS of the
vertebrobasilar system will improve reliability of transcranial sonographic
examination.
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