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Intraoperative Impedance Monitoring during CT-Guided Stereotactic Biopsies

Authors :
Dennis E. Bullard
Source :
Stereotactic and Functional Neurosurgery. 52:1-17
Publication Year :
1989
Publisher :
S. Karger AG, 1989.

Abstract

In this study, the relationships among computed tomography (CT) characteristics, intraoperative impedance monitoring, and histologic features were evaluated in 46 patients. Preoperatively, the CT characteristics of the proposed trajectory of the biopsy needle were determined and correlated intraoperatively with the impedance profile as obtained with a monopolar electrode. An excellent correlation between high-resolution CT density characteristics and impedance patterns was seen (r = 0.897). A correlation was also seen between CT patterns/impedance profiles and histologic features. Impedance values were also useful in predicting variation between predicted and actual needle trajectory, determining the proximity of normal structures to the probe tip and detecting loculations within cystic structures.

Details

ISSN :
14230372 and 10116125
Volume :
52
Database :
OpenAIRE
Journal :
Stereotactic and Functional Neurosurgery
Accession number :
edsair.doi.dedup.....a4aba74af52a9f1ee952fde354f2ecb4
Full Text :
https://doi.org/10.1159/000099482