title: Finite element analysis of tissue deformation with a radiofrequency ablation electrode for strain imaging.
abstract: Recent studies have shown that radiofrequency (RF) electrode displacement or deformation-based strain imaging can be used as an alternate imaging modality to monitor and to evaluate ablative therapies for liver tumors. This paper describes a biomechanical model used to study RF electrode deformation-based strain imaging, in conjunction with a simulated medical ultrasound linear array transducer. The computer simulations reported here are important steps toward understanding this biomechanical system in vivo, thus providing a basis for improving system design, including the motion tracking algorithm and image guidance for performing RF electrode displacement-strain imaging in vivo.
authors.affiliation: The University of Wisconsin-Madison 53706, USA. jjiang2@wisc.edu
authors.forename: Jingfeng
authors.initials: J
authors.lastname: Jiang
authors.forename: Tomy
authors.initials: T
authors.lastname: Varghese
authors.forename: Quan
authors.initials: Q
authors.lastname: Chen
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Hall
authors.forename: James A
authors.initials: JA
authors.lastname: Zagzebski
mesh_terms: D000818:Animals; D017115:Catheter Ablation / Q000295:instrumentation* / Q000379:methods*; D003198:Computer Simulation; D004548:Elasticity; D020342:Finite Element Analysis; D006801:Humans; D008839:Microelectrodes; D008954:Models, Biological; D013314:Stress, Mechanical; D013312:Stress, Physiological; D025321:Surgery, Computer-Assisted / Q000379:methods*; D018084:Ultrasonography, Interventional / Q000379:methods*