Neoplasma Vol.53, p.37-42, 2006
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Title: The relevance of the corticographic median nerve somatosensory evoked potentials (SEPs) phase reversal in the surgical treatment of brain tumors in central cortex
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Author: R., TOMAS
; P., HANINEC
; L., HOUSTAVA
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Abstract: Tumors of the central brain cortex change the original anatomy of
this important area and so an intraoperative localization
of the perirolandic structures is crucial in decision concerning
the way and the extent of tumor resection. The phase reversal
of median nerve SEPs is an essential tool for neurosurgical
procedures in and around the perirolandic gyri. This study examines
the relevance of the method in a group of 62 patients having
surgery of tumors in and around the central region. A success
rate in obtaining the SEP phase reversal was 94%. In all groups of
patients the complete resection of tumor was
achieved in 58% , subtotal resection in 19% and partial or biopsy
only in 23%. The long term impairment of neurological
status was observed in 6% of patients. Compared to the recently
published studies our results are acceptable both in completeness
of tumor resection and relatively low ratio of impaired
postoperative neurological deficit despite the fact, that in
the majority of patients the phase reversal mapping was the only
method guiding the surgical procedure. Our study supports
the crucial role of the central cortex mapping using the SEP phase
reversal method in the surgery for the tumors of the primary
sensorimotor cortex.
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Keywords: somatosensory evoked potentials, phase reversal, parietal tumors,
intraoperative monitoring
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Year: 2006, Volume: 53, Issue: |
Page From: 37, Page To: 42 |
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