×

THERAPEUTIC APPARATUS FOR HEATING A SUBJECT

  • US 20130217950A1
  • Filed: 10/11/2011
  • Published: 08/22/2013
  • Est. Priority Date: 10/15/2010
  • Status: Active Grant
First Claim
Patent Images

1. A therapeutic apparatus comprising:

  • a high intensity focused ultrasound system for heating a target zone of a subject;

    a magnetic resonance imaging system for acquiring magnetic resonance data;

    a processor for controlling the therapeutic apparatus;

    a memory containing machine executable instructions for execution by the processor, wherein execution of the instructions cause the processor to generate heating commands which cause the high intensity focused ultrasound system to sonicate the subject in accordance with heating trajectories;

    wherein execution of the instructions further cause the processor to repeatedly;

    acquire the magnetic resonance data during execution of the heating commands;

    calculate a spatially dependent parameter from the magnetic resonance data; and

    modify the heating commands in accordance with the spatially dependent parameter such that within the target zone the spatially dependent parameter remains below a first predetermined threshold and above a second predetermined threshold andwherein execution of the instructions further cause the processor to generate waiting commands which cause the high intensity focused ultrasound system to halt sonication for a predetermined period of time after executing the heating commands;

    wherein execution of the instructions further cause the processor to generate maintaining commands which cause the high intensity focused ultrasound system to sonicate the subject in accordance with maintaining trajectories, wherein execution of the instructions further cause the processor to repeatedly;

    acquire the magnetic resonance data during execution of the maintaining commands;

    calculate the spatially dependent parameter from the magnetic resonance data acquired during execution of the maintaining commands; and

    modify the maintaining commands in accordance with the spatially dependent parameter such that within the target zone the spatially dependent parameter remains below the first predetermined threshold and above the second predetermined thresholdwherein execution of the instructions cause the processor to allow the spatially dependent parameter to exceed the first predetermined threshold in the target zone if the sonication duration is less than a predetermined minimum sonication duration.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×