title: Torque free asymmetric gradient coils for echo planar imaging.
abstract: In this work, we present a new torque-free asymmetric gradient coil that is capable of generating high quality axial, sagittal, and coronal echo planar images of the human head. This gradient set was calculated using the Biot-Savart law and least square approaches to optimize the field in the region of interest and to minimize net torques. The resulting structure has excellent shoulder-to-coil clearance and, as such, has the advantage of providing good patient access to the linear portion of the gradient while minimizing patient discomfort from claustrophobia.
authors.affiliation: Department of Radiology, Ohio State University, Columbus.
authors.forename: A M
authors.initials: AM
authors.lastname: Abduljalil
authors.forename: A H
authors.initials: AH
authors.lastname: Aletras
authors.forename: P M
authors.initials: PM
authors.lastname: Robitaille
mesh_terms: D017352:Echo-Planar Imaging / Q000295:instrumentation*; D006257:Head / Q000033:anatomy & histology*; D006801:Humans; D008962:Models, Theoretical