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Acta Neurochirurgica

Erschienen in:

01.09.2012 | Clinical Article

Frameless image-guided stereotaxy with real-time visual feedback for brain biopsy

verfasst von: Jens Gempt, Niels Buchmann, Yu-Mi Ryang, Sandro Krieg, Jürgen Kreutzer, Bernhard Meyer, Florian Ringel

Erschienen in: Acta Neurochirurgica | Ausgabe 9/2012

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Abstract

Background

Frame-based stereotaxy remains the “gold standard” for cerebral biopsies and functional neurosurgery though new frameless stereotactic systems are evolving continually. As the technique of frameless stereotaxy gains increasing acceptance among neurosurgeons, this study assesses the feasibility of a system for frameless image-guided stereotaxy.

Methods

All patients biopsied for intracranial lesions between February 2007 and August 2010 using the BrainLAB VarioGuide frameless stereotactic system were evaluated prospectively. Prior to surgery, patients underwent magnetic resonance (MR) imaging; additionally, fluoroethyl-tyrosine (FET)-positron emission tomography (PET) images were acquired and fused to MR images in selected cases. Biopsy trajectory length, lesion volume, procedure duration, and diagnostic yield were assessed.

Results

Ninety-six diagnostic biopsies in 91 patients were evaluated. Lesion volume ranged from 0.17 to 121.8 cm³; trajectory length from 25.3 to 101.9 mm. Diagnostic yield was 93.8%. Mean operation time from skin incision to wound closure was 42 min; in the operating room, it was 99 min.

Conclusions

Clinical experience indicates VarioGuide to be safe and accurate. Reachable range of lesion localisation appears to be comparable to a frame-based stereotaxy system. Operation times are brief. The unique design of this frameless stereotactic system allows real-time visual feedback of needle positioning.

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Titel: Frameless image-guided stereotaxy with real-time visual feedback for brain biopsy
verfasst von: Jens Gempt
Niels Buchmann
Yu-Mi Ryang
Sandro Krieg
Jürgen Kreutzer
Bernhard Meyer
Florian Ringel
Publikationsdatum: 01.09.2012
Verlag: Springer Vienna
Erschienen in: Acta Neurochirurgica / Ausgabe 9/2012
Print ISSN: 0001-6268
Elektronische ISSN: 0942-0940
DOI: https://doi.org/10.1007/s00701-012-1425-y

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