Method of and device for determining a temperature distribution

Electricity: measuring and testing – Particle precession resonance – Using a nuclear resonance spectrometer system

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324318, 324322, 324309, 128653, 1286532, G01V 300

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active

060642068

ABSTRACT:
The invention relates to a method of determining, utilizing magnetic resonance, a temperature distribution of a part of an object which is arranged in a substantially uniform steady magnetic field, the determination of the temperature distribution involving the determination of a reference image of the object, for example a part of the human body, and a phase image of the human body. Subsequently, the temperature distribution is determined from phase differences between the values of pixels of the phase image and the values of corresponding pixels of a predetermined reference phase image. In order to counteract errors in the temperature distribution which are caused by motion of the object, navigator pulse sequences are generated so as to measure navigator signals prior to the measurement of MR signals wherefrom the reference image and the phase image are reconstructed. Subsequently, a correction for correction of the temperature distribution is derived from the navigator signals.

REFERENCES:
patent: 4937526 (1990-06-01), Ehman et al.
patent: 5151656 (1992-09-01), Maier et al.
patent: 5263482 (1993-11-01), Leunbach
patent: 5711300 (1998-01-01), Schneider et al.

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