title: Heating characteristics of antenna arrays used in microwave ablation: A theoretical parametric study.
abstract: A numerical study of the performance of antenna arrays used in microwave ablation (MWA) is carried out. Double-slot coaxial antennas in triangular and square configurations are studied. Clinical (healthy vs. malignant) and experimental (in vs. ex vivo) scenarios for hepatic cancer treatment are modeled, and further application in bone and lung tissue is examined. It is found that triangular arrays can create spherical ablation zones, while square configurations result in flatter ones. Thresholds in power and application times for creating continuous ablation zones are calculated, and the characteristics of the latter are quantified.
authors.affiliation: THESS S.A., Technopolis ICT Business Park, 57001 Thessaloniki, Greece; Department of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece. Electronic address: karampatzakis@thess.com.gr.
authors.forename: Andreas
authors.initials: A
authors.lastname: Karampatzakis
authors.forename: Sven
authors.initials: S
authors.lastname: Kühn
authors.forename: George
authors.initials: G
authors.lastname: Tsanidis
authors.forename: Esra
authors.initials: E
authors.lastname: Neufeld
authors.forename: Theodoros
authors.initials: T
authors.lastname: Samaras
authors.forename: Niels
authors.initials: N
authors.lastname: Kuster
mesh_terms: D003198:Computer Simulation; D006358:Hot Temperature; D006801:Humans; D053685:Laser Therapy / Q000295:instrumentation* / Q000379:methods; D008872:Microwaves; D008962:Models, Theoretical
keywords: FDTD; Hyperthermia; Microwave ablation; Numerical modeling