Potential of UWB Radar Systems in Monitoring Liver Ablation: A Phantom Model Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F25%3A00379521" target="_blank" >RIV/68407700:21230/25:00379521 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21460/25:00379521

Výsledek na webu

<a href="https://doi.org/10.1109/TAP.2024.3513555" target="_blank" >https://doi.org/10.1109/TAP.2024.3513555</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TAP.2024.3513555" target="_blank" >10.1109/TAP.2024.3513555</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Potential of UWB Radar Systems in Monitoring Liver Ablation: A Phantom Model Study

Popis výsledku v původním jazyce

Ultra-wideband (UWB) radar differential imaging has a potential to be one of non-invasive, real-time, and non-ionizing methods for radiofrequency ablation (RFA) monitoring. In this study we developed a novel 3D UWB radar system for monitoring of the ablation zones (AZ) sizes and shapes. The system was first numerically tested on both homogeneous and heterogeneous patient models, followed by corresponding experiments. We applied a 3D Delay-and-Sum (DAS) algorithm to reconstruct and locate AZs, supported by an original method to determine average permittivity for heterogeneous DAS reconstructions. Additionally, an algorithm estimating the AZ size and shape was developed. The system demonstrated high precision with a monitoring error of 1.2 ± 0.9 mm in simulations and 1.3 ± 0.8 mm in ex vivo experiments. AZ volume and shape were approximated with relative errors of 14.8 ± 9.5 % in numerical models and 29.6 ± 24.3 % in experiments. These results indicate that the developed UWB radar system is a promising method for accurate RFA monitoring.

Název v anglickém jazyce

Potential of UWB Radar Systems in Monitoring Liver Ablation: A Phantom Model Study

Popis výsledku anglicky

Ultra-wideband (UWB) radar differential imaging has a potential to be one of non-invasive, real-time, and non-ionizing methods for radiofrequency ablation (RFA) monitoring. In this study we developed a novel 3D UWB radar system for monitoring of the ablation zones (AZ) sizes and shapes. The system was first numerically tested on both homogeneous and heterogeneous patient models, followed by corresponding experiments. We applied a 3D Delay-and-Sum (DAS) algorithm to reconstruct and locate AZs, supported by an original method to determine average permittivity for heterogeneous DAS reconstructions. Additionally, an algorithm estimating the AZ size and shape was developed. The system demonstrated high precision with a monitoring error of 1.2 ± 0.9 mm in simulations and 1.3 ± 0.8 mm in ex vivo experiments. AZ volume and shape were approximated with relative errors of 14.8 ± 9.5 % in numerical models and 29.6 ± 24.3 % in experiments. These results indicate that the developed UWB radar system is a promising method for accurate RFA monitoring.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20601 - Medical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Transactions on Antennas and Propagation

ISSN

0018-926X

e-ISSN

1558-2221

Svazek periodika

73

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

3202-3216

Kód UT WoS článku

001483869400017

EID výsledku v databázi Scopus

2-s2.0-85212529676