Comput. Biol. Med. - A study of the sink effect by blood vessels in radiofrequency ablation.

Tópicos

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Resumo

The objective of the current work was to study the sink effect in radiofrequency ablation (RFA) caused by a blood vessel located close to an electrode in a two-compartment numerical model, consisting of a spherical tumor embedded in healthy liver tissue. Several blood vessels of different sizes were studied at different distances from the electrode. It was found that when a straight blood vessel, cylindrical in shape, is located parallel to the electrode, the minimum distance for a drop of only 10% in the isothermal treatment volume above 50?C, compared to the model without the blood vessel, varies from 4.49 mm (for a vessel of 2mm in diameter) to 20.02 mm (for a vessel 20mm in diameter). The results can be used as a guideline to clinical practitioners, in order to quickly assess the potential impact of existing blood vessels on the resulting treatment volume.

Resumo Limpo

object current work studi sink effect radiofrequ ablat rfa caus blood vessel locat close electrod twocompart numer model consist spheric tumor embed healthi liver tissu sever blood vessel differ size studi differ distanc electrod found straight blood vessel cylindr shape locat parallel electrod minimum distanc drop isotherm treatment volum c compar model without blood vessel vari mm vessel mm diamet mm vessel mm diamet result can use guidelin clinic practition order quick assess potenti impact exist blood vessel result treatment volum

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