Patent ID: 7759937

Claim:
A method for reducing aliasing artifacts during magnetic resonance (MR) imaging for MR-monitored high intensity focused ultrasound (HIFU) therapy, comprising the steps of: in an MR apparatus, implementing MR-monitored HIFU therapy on a subject in the MR apparatus using HIFU therapy components that are excited by excitation signals used to generate diagnostic magnetic resonance signals from the subject, and thereby emit interfering signals that produce aliasing artifacts in an MR image generated during HIFU therapy; with a primary coil of said MR apparatus, receiving that diagnostic magnetic resonance signals from a subject during operation of said HIFU therapy components in said MR-monitored HIFU therapy in said MR apparatus, said primary coil also receiving said interfering signals; providing an additional coil in said MR apparatus that receives only said interfering MR signals that originate from said HIFU therapy components acquiring said diagnostic MR signals and said interfering signals with said primary coil concurrently with acquiring said interfering MR signals with said additional coil; automatically electronically removing the interfering MR signals received by the additional coil from the diagnostic MR signals received by the primary coil; and executing an imaging algorithm and generating an MR image from the diagnostic MR signals with the interfering MR signals removed therefrom.