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The electrical conductivity of human cerebrospinal fluid in vivo

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The electrical conductivity of human cerebrospinal fluid in vivo. / Latikka, Juha; Eskola, Hannu.

World Congress on Medical Physics and Biomedical Engineering 2018. Springer, 2019. s. 773-776 (IFMBE Proceedings; Vuosikerta 68, Nro 1).

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Harvard

Latikka, J & Eskola, H 2019, The electrical conductivity of human cerebrospinal fluid in vivo. julkaisussa World Congress on Medical Physics and Biomedical Engineering 2018. IFMBE Proceedings, Nro 1, Vuosikerta. 68, Springer, Sivut 773-776, 1/01/00. https://doi.org/10.1007/978-981-10-9035-6_142

APA

Latikka, J., & Eskola, H. (2019). The electrical conductivity of human cerebrospinal fluid in vivo. teoksessa World Congress on Medical Physics and Biomedical Engineering 2018 (Sivut 773-776). (IFMBE Proceedings; Vuosikerta 68, Nro 1). Springer. https://doi.org/10.1007/978-981-10-9035-6_142

Vancouver

Latikka J, Eskola H. The electrical conductivity of human cerebrospinal fluid in vivo. julkaisussa World Congress on Medical Physics and Biomedical Engineering 2018. Springer. 2019. s. 773-776. (IFMBE Proceedings; 1). https://doi.org/10.1007/978-981-10-9035-6_142

Author

Latikka, Juha ; Eskola, Hannu. / The electrical conductivity of human cerebrospinal fluid in vivo. World Congress on Medical Physics and Biomedical Engineering 2018. Springer, 2019. Sivut 773-776 (IFMBE Proceedings; 1).

Bibtex - Lataa

@inproceedings{7c7eb6afd9944a05a9a335dcd23d0e06,
title = "The electrical conductivity of human cerebrospinal fluid in vivo",
abstract = "Cerebrospinal fluid (CSF) is a clear, highly conductive liquid. Due to its much higher electric conductivity compared to other intracranial tissues, its influence is significant, for example, on volume conductor models, current distribution and heat generation in RF surgery. It has already been shown previously that it is important to include CSF in models to achieve more accurate results. Conductivity values measured in vitro are commonly used in modelling because in vivo values are not available. We have developed a method for taking calibrated in vivo human CSF conductivity measurements with a needle electrode. We used this method to take CSF conductivity measurements from four patients during brain surgeries that were conducted to remove tumours. The patients were selected so that the surgical path went through a ventricle to make sure that there was enough CSF volume to take the measurements. Two of the patients had meningiomas and the other two had gliomas. Measurements taken from clear CSF with our method resulted in conductivity values of 1.79–1.81 S/m. Impurities such as blood or the presence of cystic brain tumour decreased the measured electrical conductivity of CSF. Our results support the findings that the previously suggested conductivity value of 1.79 S/m for human CSF at 37 °C taken from in vitro measurements is applicable for modelling purposes.",
keywords = "Brain tissue, Electrical properties, Measurements, Modelling",
author = "Juha Latikka and Hannu Eskola",
note = "INT=tut-bmt,{"}Latikka, Juha{"} jufoid=58152",
year = "2019",
doi = "10.1007/978-981-10-9035-6_142",
language = "English",
series = "IFMBE Proceedings",
publisher = "Springer",
number = "1",
pages = "773--776",
booktitle = "World Congress on Medical Physics and Biomedical Engineering 2018",

}

RIS (suitable for import to EndNote) - Lataa

TY - GEN

T1 - The electrical conductivity of human cerebrospinal fluid in vivo

AU - Latikka, Juha

AU - Eskola, Hannu

N1 - INT=tut-bmt,"Latikka, Juha" jufoid=58152

PY - 2019

Y1 - 2019

N2 - Cerebrospinal fluid (CSF) is a clear, highly conductive liquid. Due to its much higher electric conductivity compared to other intracranial tissues, its influence is significant, for example, on volume conductor models, current distribution and heat generation in RF surgery. It has already been shown previously that it is important to include CSF in models to achieve more accurate results. Conductivity values measured in vitro are commonly used in modelling because in vivo values are not available. We have developed a method for taking calibrated in vivo human CSF conductivity measurements with a needle electrode. We used this method to take CSF conductivity measurements from four patients during brain surgeries that were conducted to remove tumours. The patients were selected so that the surgical path went through a ventricle to make sure that there was enough CSF volume to take the measurements. Two of the patients had meningiomas and the other two had gliomas. Measurements taken from clear CSF with our method resulted in conductivity values of 1.79–1.81 S/m. Impurities such as blood or the presence of cystic brain tumour decreased the measured electrical conductivity of CSF. Our results support the findings that the previously suggested conductivity value of 1.79 S/m for human CSF at 37 °C taken from in vitro measurements is applicable for modelling purposes.

AB - Cerebrospinal fluid (CSF) is a clear, highly conductive liquid. Due to its much higher electric conductivity compared to other intracranial tissues, its influence is significant, for example, on volume conductor models, current distribution and heat generation in RF surgery. It has already been shown previously that it is important to include CSF in models to achieve more accurate results. Conductivity values measured in vitro are commonly used in modelling because in vivo values are not available. We have developed a method for taking calibrated in vivo human CSF conductivity measurements with a needle electrode. We used this method to take CSF conductivity measurements from four patients during brain surgeries that were conducted to remove tumours. The patients were selected so that the surgical path went through a ventricle to make sure that there was enough CSF volume to take the measurements. Two of the patients had meningiomas and the other two had gliomas. Measurements taken from clear CSF with our method resulted in conductivity values of 1.79–1.81 S/m. Impurities such as blood or the presence of cystic brain tumour decreased the measured electrical conductivity of CSF. Our results support the findings that the previously suggested conductivity value of 1.79 S/m for human CSF at 37 °C taken from in vitro measurements is applicable for modelling purposes.

KW - Brain tissue

KW - Electrical properties

KW - Measurements

KW - Modelling

U2 - 10.1007/978-981-10-9035-6_142

DO - 10.1007/978-981-10-9035-6_142

M3 - Conference contribution

T3 - IFMBE Proceedings

SP - 773

EP - 776

BT - World Congress on Medical Physics and Biomedical Engineering 2018

PB - Springer

ER -