Schlachetzki, Felix and Hoelscher, Thilo and Ullrich, Odo W. and Schalke, Berthold and Bogdahn, Ulrich (2001) Dynamic and three dimensional transcranial ultrasonography of an arachnoid cyst in the cerebral convexity. Technical note. Journal of neurosurgery 94 (4), pp. 655-659.
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Structural imaging of the brain, such as cerebral computerized tomography (CT) and magnetic resonance (MR) imaging,
is state-of-the-art. Dynamic transcranial (dTC) ultrasonography and three-dimensional (3D) transcranial colorcoded
duplex (TCC) ultrasonography are complementary, noninvasive procedures with the capacity for real-time imaging,
which may aid in the temporary management of space-occupying lesions.
A 16-year-old woman presented with recurrent tension-type headaches. A space-occupying arachnoid cyst in the
cerebral convexity was demonstrated on MR images. The patient underwent an examination for raised intracranial
pressure, which was performed using a standard color-coded duplex ultrasonography system attached to a personal
computer–based system for 3D data acquisition. Transcranial ultrasonography was used to identify the outer arachnoid
membrane of the cyst, which undulated freely in response to rotation of the patient’s head (headshake maneuver).
Three-dimensional data sets were acquired and, using a multiplanar reformatting reconstruction algorithm, the authors
obtained high-resolution images that corresponded to the initial MR image and a follow-up cranial CT scan. No detectable
differences were observed on dTC or 3D TC ultrasonograms obtained at follow-up examinations performed 9
and 28 months later.
Three-dimensional TCC and dTC ultrasonography may complement conventional diagnostic procedures such as
MR and CT imaging. This report represents evidence of the high resolution and good reproducibility of 3D TC methods.
Ultrasonography is a mobile and inexpensive tool and may be used to improve management and therapeutic strategies
for patients with space-occupying brain lesions in selected cases.
|Institutions:||Medicine > Lehrstuhl für Neurochirurgie|
|Keywords:||three-dimensional transcranial ultrasonography • intracranial pressure • cerebrospinal fluid|
|Subjects:||600 Technology > 610 Medical sciences Medicine|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||25 Feb 2011 09:20|
|Last Modified:||25 Feb 2011 09:20|
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