ISSN: 1859 - 2872
Evaluating the effect of intraoperative navigated ultrasonography in intracranial tumor resection
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Abstract
Objective: To evaluate the effect of intraoperative navigated ultrasonography in intracranial tumor resection. Subject and method: 32 intracranial tumor patients were undergoing surgical treatment with intraoperative navigated ultrasonography at Neurosurgery Department of 108 Military Central Hospital from January to May 2020. After resection was completed, the cavity borders of all patients were examined with a 13MHz intraoperative probe. Any echogenic region > 5mm in thickness extending from the surgical cavity into the brain substance was taken as the sonographic criterion for residual tumor. A continuous echogenic rim < 5mm was considered normal. Results were correlated with gadolinium-enhanced MRI obtained within 48 hours after surgery. Result: The Kappa value for inter-method agreement was 0.72. There were four cases in whom MRI showed residue despite a negative sonography: Extensive edema or surgicel along the cavity borders (2 cases with glioblastoma multiforme; 1 case metastatic carcinoma and 1 case anaplastic astrocytoma) may be the reason for the residue going undetected. Conclusion: Intraoperative navigated ultrasonography is an effective tool for maximizing the extent of intracranial tumor resection.
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References
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