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TEMPERATURE MEASUREMENT NEAR AN ICE BALL USING A PROTON RESONANCE FREQUENCY METHOD AND RECALCULATION OF SUSCEPTIBILITY ARTIFACTS
TEMPERATURE MEASUREMENT NEAR AN ICE BALL USING A PROTON RESONANCE FREQUENCY METHOD AND RECALCULATION OF SUSCEPTIBILITY ARTIFACTS
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机译:质子共振频率法对冰球附近的温度进行测量并重新计算磁化率
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摘要
In a method or system for magnetic resonance imaging based temperature monitoring for real-time feedback to a physician for a cryoablation therapy of a lesion which creates an ice ball of the lesion to induce cell death, the magnetic resonance imaging system, using proton resonance frequency imaging, obtains a real-time temperature image of the ice ball of the lesion undergoing the cryoablation therapy and the adjacent surrounding tissue. By use of an algorithm, correcting temperature errors at a border of the ice ball are corrected in the real-time image, the temperature error correction correcting susceptibility contrast errors caused by a distortion of the local magnetic field at the border of the ice ball.
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