Delineation of brain tumor margins using intraoperative sononavigation: implications for tumor resection

Journal of Clinical Ultrasound : JCU
Nobusada ShinouraRyozi Yamada

Abstract

Sonography has been employed for real-time intraoperative delineation of tumor boundaries during resection of brain tumors. However, the variably hyperechoic appearance of brain edema or gliosis surrounding the brain may interfere with accurate depiction of tumor margins. The goal of the present study was to use sononavigation, which provides coregistration between real-time sonograms and MRI scans, to assess the accuracy of sonographic determination of tumor margins. Sononavigation was performed on 12 brain tumors (7 metastatic brain tumors, 2 meningiomas, 1 anaplastic oligodendroglioma, 1 anaplastic pilocytic astrocytoma, and 1 anaplastic astrocytoma). Sonograms of tumor margins were categorized into 1 of 3 types: in type 1, the tumor margin was clearly visualized and corresponded to the margin of the enhanced lesion on MR scan in all areas; in type 2, the tumor margin was clearly seen in some areas but was obscure in others due to hyperechoic edema; and in type 3, the tumor margin was indistinguishable from surrounding tissues in all areas. Three metastatic brain tumors and 1 meningioma were categorized as type 1. Three metastatic brain tumors, 1 meningioma, and 1 anaplastic oligodendroglioma were categorized as type 2. The ...Continue Reading

References

May 1, 1985·Radiology·S J SmithH L Neiman
Apr 1, 1984·Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine·J MachiD G Spigos
Aug 1, 1982·Journal of Neurosurgery·W F ChandlerT M Silver
Jan 1, 1994·Journal of Clinical Ultrasound : JCU·P D LeRouxJ P Elliott
Jan 1, 1997·Stereotactic and Functional Neurosurgery·C Giorgi, D S Casolino

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Citations

Feb 25, 2010·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Mohamed Ahmed El BeltagyMohamed Kamal
Nov 1, 2011·Seminars in Roentgenology·Beverly E Hashimoto
Mar 18, 2008·Critical Reviews in Oncology/hematology·Christine MarosiCharles Vecht
Mar 3, 2009·Neurosurgery·Peter A WoerdemanJan W B van der Sprenkel
Aug 6, 2015·Child's Nervous System : ChNS : Official Journal of the International Society for Pediatric Neurosurgery·Ash SinghalD Doug Cochrane
Jun 25, 2016·Clinical Neurology and Neurosurgery·Michael FiechterMarkus F Oertel
Dec 22, 2016·CNS Oncology·Bassel ZebianConor Mallucci
Sep 11, 2013·Physics in Medicine and Biology·Tianren Wang, Yun Jing
Mar 19, 2021·Frontiers in Oncology·Huan Wee ChanJeffrey Colin Bamber

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