Modeling the internal pressure dependence of thermal conductivity and in vitro temperature measurement for lung RFA.

Nozomu Yamazaki, Hiroki Watanabe, Masatoshi Seki, Takeharu Hoshi, Y. Kobayashi, Tomoyuki Miyashita, Masakatsu G. Fujie

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Radio frequency ablation (RFA) for lung cancer has increasingly been used over the past few years because RFA is minimally invasive treatment for patients. As a feature of RFA for the lung cancer, lung has the air having low thermal conductivity. Therefore, RFA for lung has the advantage that only the tumor is coagulated because heating area is confined to the immediate vicinity of the heating point. However, it is difficult for operators to control the precise formation of coagulation zones due to inadequate imaging modalities. We propose a method using numerical simulation to analyze the temperature distribution of the organ in order to overcome the current deficiencies. Creating an accurate thermophysical model was a challenging problem because of the complexities of the thermophysical properties of the organ. In this work, as the processes in the development of ablation simulator, measurement of the pressure dependence of lung thermal conductivity and in vitro estimation of the temperature distribution during RFA is presented.

Fingerprint

Thermal Conductivity
Ablation
Radio
Temperature measurement
Thermal conductivity
Pressure
Lung
Temperature
Lung Neoplasms
Heating
Temperature distribution
Body Temperature
Coagulation
Air
In Vitro Techniques
Tumors
Thermodynamic properties
Simulators
Imaging techniques
Computer simulation

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Biomedical Engineering
  • Health Informatics

Cite this

@article{406b26ab87b749c6a50a667036e44386,
title = "Modeling the internal pressure dependence of thermal conductivity and in vitro temperature measurement for lung RFA.",
abstract = "Radio frequency ablation (RFA) for lung cancer has increasingly been used over the past few years because RFA is minimally invasive treatment for patients. As a feature of RFA for the lung cancer, lung has the air having low thermal conductivity. Therefore, RFA for lung has the advantage that only the tumor is coagulated because heating area is confined to the immediate vicinity of the heating point. However, it is difficult for operators to control the precise formation of coagulation zones due to inadequate imaging modalities. We propose a method using numerical simulation to analyze the temperature distribution of the organ in order to overcome the current deficiencies. Creating an accurate thermophysical model was a challenging problem because of the complexities of the thermophysical properties of the organ. In this work, as the processes in the development of ablation simulator, measurement of the pressure dependence of lung thermal conductivity and in vitro estimation of the temperature distribution during RFA is presented.",
author = "Nozomu Yamazaki and Hiroki Watanabe and Masatoshi Seki and Takeharu Hoshi and Y. Kobayashi and Tomoyuki Miyashita and Fujie, {Masakatsu G.}",
year = "2011",
language = "English",
volume = "2011",
pages = "5753--5757",
journal = "Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference",
issn = "1557-170X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - Modeling the internal pressure dependence of thermal conductivity and in vitro temperature measurement for lung RFA.

AU - Yamazaki, Nozomu

AU - Watanabe, Hiroki

AU - Seki, Masatoshi

AU - Hoshi, Takeharu

AU - Kobayashi, Y.

AU - Miyashita, Tomoyuki

AU - Fujie, Masakatsu G.

PY - 2011

Y1 - 2011

N2 - Radio frequency ablation (RFA) for lung cancer has increasingly been used over the past few years because RFA is minimally invasive treatment for patients. As a feature of RFA for the lung cancer, lung has the air having low thermal conductivity. Therefore, RFA for lung has the advantage that only the tumor is coagulated because heating area is confined to the immediate vicinity of the heating point. However, it is difficult for operators to control the precise formation of coagulation zones due to inadequate imaging modalities. We propose a method using numerical simulation to analyze the temperature distribution of the organ in order to overcome the current deficiencies. Creating an accurate thermophysical model was a challenging problem because of the complexities of the thermophysical properties of the organ. In this work, as the processes in the development of ablation simulator, measurement of the pressure dependence of lung thermal conductivity and in vitro estimation of the temperature distribution during RFA is presented.

AB - Radio frequency ablation (RFA) for lung cancer has increasingly been used over the past few years because RFA is minimally invasive treatment for patients. As a feature of RFA for the lung cancer, lung has the air having low thermal conductivity. Therefore, RFA for lung has the advantage that only the tumor is coagulated because heating area is confined to the immediate vicinity of the heating point. However, it is difficult for operators to control the precise formation of coagulation zones due to inadequate imaging modalities. We propose a method using numerical simulation to analyze the temperature distribution of the organ in order to overcome the current deficiencies. Creating an accurate thermophysical model was a challenging problem because of the complexities of the thermophysical properties of the organ. In this work, as the processes in the development of ablation simulator, measurement of the pressure dependence of lung thermal conductivity and in vitro estimation of the temperature distribution during RFA is presented.

UR - http://www.scopus.com/inward/record.url?scp=84862282693&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862282693&partnerID=8YFLogxK

M3 - Article

VL - 2011

SP - 5753

EP - 5757

JO - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

JF - Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference

SN - 1557-170X

ER -