Schiff Hardin LLP
Method for reducing magnetic resonance temperature measurement errors in a magnetic resonance monitored HIFU treatment
A method for reducing magnetic resonance temperature measurement errors, which is used for the high-intensity focused ultrasound device for monitoring magnetic resonance imaging includes obtaining a magnetic resonance phase diagram as a reference image before the high-intensity focused ultrasound device heats the heating area; obtaining another magnetic resonance phase diagram as a heating image during or after the heating process of the high intensity focused ultrasound device; calculating the temperature changes in the heating area according to said heating image and reference image. The method further includes measuring the magnetic field changes caused by the position changes of the ultrasonic transducer of said high-intensity focused ultrasound device, and then compensating for the temperature changes according to said magnetic field changes. The present invention can significantly reduce the temperature errors caused by the position changes of the ultrasonic transducer.
Siemens Aktiengesellschaft
A A A G G
A61B A61N A61B G01R G01R
additional inventional additional additional inventional
Cheng Xiao Dong
Ni Zhou