0000000000198947
AUTHOR
A. Perneczky
Endo-neuro-sonography: principles and 3-D technique
To evaluate the usefulness of transendoscopic sonography we studied two new sono probes 6 F in diameter in 17 fresh specimens. We saw precise imaging of well-known anatomical structures and also gained an additional dimension in endoscopy, as the sono adds to the endo-view a transverse scan like a mini-CT at the tip of the probe. We also experienced the navigation characteristic of this imaging technique, both in real time and on line. Some 3-D reconstructions of the ventricular system were examined. The equipment has been used in clinical practice and must now be adapted for neurosurgery.
Endoscopic Procedures through the Foramen Interventriculare of Monro under Stereotactical Conditions
The foramen interventriculare of Monro is an anatomical narrowness for the endoscopic access to the third ventricle. The effective mechanical angle to pass the foramen interventriculare from a frontal bore hole depends on the diameter in the plane of entrance, the depth of the foramen, and the diameter of the endoscope. Under the pathological conditions of a hydrocephalus internus the foramen interventriculare is enlarged. By means of stereotactical guidance, it is possible to reach the third ventricle accurately without damaging anatomical structures around the foramen interventriculare. The endoscopic technique under stereotactical guidance using a rigid endoscope is sufficient and safe t…
<title>Flexible neuroendoscopy with laser and microsystem technique</title>
The use of flexible neuroendoscopic techniques in neurosurgical procedures is routinely performed in the spinal canal and in the intracranial subdural space. Treated entities are syringomyelia, tumors with concomitant syrinxes in spinal cord, cystic legions in the subdural and subarachnoid space in the spinal canal as myelomeningoceles.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Koinzidenz eines epiduralen H�matoms und epiduralen Metastasengewebes bei thorakaler Epiduralan�sthesie
Die vorliegende Kasuistik beschreibt den Fall einer Paraplegie nach Anlage eines thorakalen Epiduralkatheters auf dem Boden eines epiduralen Hamatoms im Bereich epiduralen Metastasengewebes. Neben dem genauen Procedere werden die Bedingungen diskutiert, die im Falle einer solchen Komplikation die fruhest mogliche Diagnose und somit die nachfolgende Therapieplanung ermoglichen. Daruber hinaus wird die Notwendigkeit praoperativer Untersuchungen bei geplanter Anlage eines Epiduralkatheters diskutiert.
Endo-neuro-sonography: Anatomical aspects of the basal cisterns
SummaryTo evaluate the usefulness of transendoscopic sonography, two sono catheters of 6F diameter were studied in 15 fresh specimens. A precise imaging was seen of well known anatomical structures. An additional dimension in endoscopy was also obtained as the sono added to the endo view a transversal scan like a mini CT at the tip of the probe. The guiding characteristic of this imaging technique, which is in real time and on line, was also experienced. These observations offer such interesting prospects for use in minimally invasive neurosurgery that further development and clinical experience seem to be justified.
Frame-based and frameless endoscopic procedures in the third ventricle.
Stereotactic guidance is useful for planning an accurate trajectory to the third ventricle. A guiding block with a ball joint was developed for frame-based endoscopy and adaptors for arm-based and armless navigation systems. Between 1992 and 1996, 52 patients were operated on endoscopically in the third ventricle under stereotactic guidance. Thirty-eight ventriculostomies, 13 biopsies and 10 cystic lesions were performed. The coordinates of two points were calculated; one in the foramen of Monro and the second in the third ventricle. The ventriculostomy was performed under endoscopic control bluntly with a Fogarty catheter in front of the basilar artery. Twenty-seven (71%) of the patients h…