Autor: Gas, Piotr - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of multi-tine electrode configuration in realistic hepatic RF ablative heating
Autorzy:: Gas, Piotr
Wyszkowska, Joanna
Powiązania:: https://bibliotekanauki.pl/articles/141022.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: percutaneous RF ablation
multi-tine electrode
tumor heating techniques
Arrhenius thermal damaged model
hepatocellular carcinoma
finite element method
Opis:: Percutaneous RF ablation is one of alternative treatment for non-surgical liver tumors. Ablative changes in hepatic tissue can be successfully estimated using the finite element method. The authors created a 3D model of a multi-tine applicator immersed in liver tissue, and then determined the optimal values of voltage applied to such an RF electrode, which do not exceed the therapeutic temperature range valid during thermal ablation procedure. Importantly, the simulations were carried out for the RF electric probes with 2 to 5 evenly spaced arms. Additionally, the thermal damage of hepatic tissue for multi-armed applicators working at pre-defined limit values of voltages was established based on the Arrhenius model.
Źródło:: Archives of Electrical Engineering; 2019, 68, 3; 521-533
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Implant Safety Tool Application to Assist the Assessment of Radio-Frequency Radiation Exposure
Autorzy:: Gas, Piotr
Miaskowski, Arkadiusz
Powiązania:: https://bibliotekanauki.pl/articles/124187.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Implant Safety Tool
pectus excavatum
metal implants
Nuss procedure
MRI devices
plane wave
FDTD method
RF exposure standards
Opis:: This paper discusses a new Implant Safety Tool, used to assess the safety of patients with metal implants exposed to radio-frequency (RF) fields. This specialist tool is discussed on the example of pectus patients with titanium bar-implant inserted during the minimally invasive Nuss procedure. The authors created a 3D realistic model of a 34-year-old male patient with a Nuss bar-implant. A numerical analysis based on the finite-difference time-domain (FDTD) method was performed for a far field source in the form of a plane wave with the frequency of 64 MHz, which corresponds to the RF exposure generated by MRI devices at 1.5 T. The obtained results allow concluding that the concave Nuss bar-implant poses no risk during environmental and occupational RF field exposures.
Źródło:: Journal of Ecological Engineering; 2019, 20, 10; 24-33
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

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