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Related Experiment Videos

[Intraoperative ultrasonography in brain surgery].

P K Hol1, R Dullerud, H K Nordby

  • 1Nevroradiologisk seksjon, Ullevål sykehus, Oslo.

Tidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke
|August 10, 1992
PubMed
Summary

Intraoperative ultrasound effectively localizes brain tumors, especially small subcortical ones. While less effective for tumor characterization, it aids in differentiating tumor types and identifying features like edema and cysts.

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Area of Science:

  • Neurosurgery
  • Medical Imaging
  • Oncology

Background:

  • Intraoperative ultrasound (IOUS) is a valuable tool in neurosurgery.
  • Accurate tumor localization is critical for effective surgical resection.
  • Distinguishing between different brain lesion types can be challenging.

Purpose of the Study:

  • To evaluate the utility of intraoperative ultrasound in localizing and characterizing brain tumors.
  • To assess the effectiveness of IOUS in identifying various intracranial pathologies.

Main Methods:

  • Intraoperative ultrasound was performed on 33 patients undergoing brain surgery.
  • Ultrasound findings were correlated with histopathological diagnoses of the resected lesions.

Main Results:

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  • IOUS successfully localized tumors, particularly small subcortical lesions.
  • Malignant brain tumors (19) included gliomas, astrocytomas, and oligodendrogliomas.
  • Metastases, meningiomas, dysembryoplastic neuroepithelial tumors, angiomas, arachnoid cysts, and infarcts were also identified.
  • Glioblastomas appeared inhomogeneous and poorly marginated; low-grade gliomas, meningiomas, and metastases were typically homogeneous and well-marginated.
  • Periofocal edema was hyperechogenic; cysts, calcifications, and hemorrhages were readily detected.

Conclusions:

  • Intraoperative ultrasound is a highly effective tool for precise tumor localization during neurosurgery.
  • While characterization is limited, IOUS can provide clues to differentiate tumor types and identify associated features like edema.