Accuracy of high-density EEG electrode position measurement using an optical scanner compared with the photogrammetry method.

Autor:	Györfi O; Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Denmark.; Department of Neurology, National Institute of Mental Health, Neurology and Neurosurgery, Budapest, Hungary., Ip CT; Neurobiology Research Unit, University Hospital Rigshospitalet, Copenhagen, Denmark., Justesen AB; Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Denmark., Gam-Jensen ML; Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Denmark., Rømer C; Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Denmark., Fabricius M; Department of Clinical Neurophysiology, Rigshospitalet, Copenhagen, Denmark., Pinborg LH; Neurobiology Research Unit, University Hospital Rigshospitalet, Copenhagen, Denmark.; Department of Neurology, Rigshospitalet, Copenhagen, Denmark., Beniczky S; Department of Clinical Neurophysiology, Danish Epilepsy Centre, Dianalund, Denmark.; Department of Clinical Medicine, Aarhus University and Department of Clinical Neurophysiology, Aarhus University Hospital, Aarhus, Denmark.
Jazyk:	angličtina
Zdroj:	Clinical neurophysiology practice [Clin Neurophysiol Pract] 2022 May 02; Vol. 7, pp. 135-138. Date of Electronic Publication: 2022 May 02 (Print Publication: 2022).
DOI:	10.1016/j.cnp.2022.04.002
Abstrakt:	Objective: To determine the feasibility and accuracy of a handheld optical scanner to measure the three-dimensional (3D) EEG electrode coordinates in a high-density array of 256 electrodes. Methods: We compared the optical scanning with a previously validated method, based on photogrammetry. Electrode coordinates were co-registered with the MRI of the patients, and mean distance error relative to the three-dimensional MRI reconstruction was determined for each patient. We included 60 patients: 30 were measured using the photogrammetry method, and 30 age and gender matched patients were measured with the optical scanner. Results: Using the optical scanner, the mean distance error was 1.78 mm (95% confidence interval: 1.59-1.98 mm) which was significantly lower (p < 0.001) compared with the photogrammetry method (mean distance error: 2.43 mm; 95% confidence interval: 2.28-2.57 mm). The real-time scanning took 5-10 min per patient. Conclusions: The handheld optical scanner is more accurate and feasible, compared to the photogrammetry method. Significance: Measuring EEG electrode positions in high-density array, using the optical scanner is suitable for clinical implementation in EEG source imaging for presurgical evaluation. (© 2022 International Federation of Clinical Neurophysiology. Published by Elsevier B.V.)
Databáze:	MEDLINE
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