Particle swarm optimization solution for roll-off control in radiofrequency ablation of liver tumors: Optimal search for PID controller tuning

Rafael Mendes Faria, Suélia de Siqueira Rodrigues Fleury Rosa, Gustavo Adolfo Marcelino de Almeida Nunes, Klériston Silva Santos, Rafael Pissinati de Souza, Angie Daniela Ibarra Benavides, Angélica Kathariny de Oliveira Alves, Ana Karoline Almeida da Silva, Mario Fabrício Rosa, Antônio Aureliano de Anicêsio Cardoso, Sylvia de Sousa Faria, Enrique Berjano, Adson Ferreira da Rocha, Ícaro dos Santos and Ana González-Suárez

PLOS ONE, 2024, vol. 19, issue 6, 1-33

Abstract: The study investigates the efficacy of a bioinspired Particle Swarm Optimization (PSO) approach for PID controller tuning in Radiofrequency Ablation (RFA) for liver tumors. Ex-vivo experiments were conducted, yielding a 9th order continuous-time transfer function. PSO was applied to optimize PID parameters, achieving outstanding simulation results: 0.605% overshoot, 0.314 seconds rise time, and 2.87 seconds settling time for a unit step input. Statistical analysis of 19 simulations revealed PID gains: Kp (mean: 5.86, variance: 4.22, standard deviation: 2.05), Ki (mean: 9.89, variance: 0.048, standard deviation: 0.22), Kd (mean: 0.57, variance: 0.021, standard deviation: 0.14) and ANOVA analysis for the 19 experiments yielded a p-value ≪ 0.05. The bioinspired PSO-based PID controller demonstrated remarkable potential in mitigating roll-off effects during RFA, reducing the risk of incomplete tumor ablation. These findings have significant implications for improving clinical outcomes in hepatocellular carcinoma management, including reduced recurrence rates and minimized collateral damage. The PSO-based PID tuning strategy offers a practical solution to enhance RFA effectiveness, contributing to the advancement of radiofrequency ablation techniques.

Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0300445

DOI: 10.1371/journal.pone.0300445

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