title: Three dimensional shear wave elastographic reconstruction of ablations.
abstract: This paper presents an algorithm for three dimensional (3D) reconstruction of tumor ablations using ultrasound electrode vibration elastography. Shear wave velocity, which is used as a surrogate for tissue stiffness, is estimated by perturbing the ablation needle and tracking frame-to-frame displacements using radiofrequency ultrasound echo data. This process is repeated over many imaging planes that share a common axis of intersection collinear with needle. A 3D volume is reconstructed by solving an optimization problem which smoothly approximates shear wave velocities on a stack of transverse planes. The mean shear wave velocity estimates obtained in the phantom experiments are within 20% of those measured using a commercial shear wave imaging system.
authors.forename: Atul
authors.initials: A
authors.lastname: Ingle
authors.forename: Tomy
authors.initials: T
authors.lastname: Varghese
mesh_terms: D055011:Ablation Techniques; D000465:Algorithms; D054459:Elasticity Imaging Techniques; D006801:Humans; D009369:Neoplasms / Q000000981:diagnostic imaging / Q000601:surgery*; D019047:Phantoms, Imaging; D015203:Reproducibility of Results