Abstract
Purpose
Flat-detector CT can be integrated with C-arm fluoroscopy for CT-guided neurosurgical and endovascular procedures. We studied the accuracy of this technique with laser assistance in targeting intracranial lesions in a cranial model.
Methods
An acrylic scale-model skull containing foam parenchyma was embedded with 2.16-mm-diameter targets. A flat-detector CT was acquired and registered to the skull’s position. Ten targets were accessed with biopsy needles under fluoroscopic guidance, flat-detector CT overlay, and laser assistance. Accuracy was measured from the needle tip to the target center using flat-detector CT.
Results
Ten targets were accessed successfully using XperGuide software. Needles were placed within 1.30 \(\pm \) 0.63 mm of target isocenter. Accuracy did not vary by entry site, operator, location, or lesion depth.
Conclusions
Laser-assisted flat-detector CT-guided targeting of all intracranial targets was successful with excellent accuracy. This technique can be applied to other minimally invasive neurosurgical procedures.
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Daniel L. Cooke and Michael R. Levitt contributed equally to this work.
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Cooke, D.L., Levitt, M.R., Kim, L.J. et al. Laser-assisted flat-detector CT-guided intracranial access. Int J CARS 11, 467–472 (2016). https://doi.org/10.1007/s11548-015-1271-5
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DOI: https://doi.org/10.1007/s11548-015-1271-5