Abstract: Disclosed are a method for measuring temperature distribution, which measures temperature distribution not only in fat tissue but also in mixed tissue containing high-water content tissue and fat tissue, and a method for imaging temperature distribution. In the disclosed method, a water signal, which is dependent on the water components of the tissue to be measured, and a fat signal, which is dependent on the fat components of the tissue to be measured, are acquired by means of nuclear magnetic resonance spectroscopy. Fatty acid signals are acquired by separating out the fat signal into various fatty acid components. The temperature of high-water content tissue is measured on the basis of the correlation between the water signal and the water temperature, and the temperature of fat tissue is measured on the basis of the correlation between each of the various fatty acid signals and the fat temperature.

Abstract: Disclosed are a method for measuring temperature distribution, which measures temperature distribution not only in fat tissue but also in mixed tissue containing high-water content tissue and fat tissue, and a method for imaging temperature distribution. In the disclosed method, a water signal, which is dependent on the water components of the tissue to be measured, and a fat signal, which is dependent on the fat components of the tissue to be measured, are acquired by means of nuclear magnetic resonance spectroscopy. Fatty acid signals are acquired by separating out the fat signal into various fatty acid components. The temperature of high-water content tissue is measured on the basis of the correlation between the water signal and the water temperature, and the temperature of fat tissue is measured on the basis of the correlation between each of the various fatty acid signals and the fat temperature.

Abstract: A noninvasive image measuring method of measuring internal organ/tissue temperature using an MRI system. Temperature measurement insusceptible to body motion and spatial variation of magnetic field is realized by utilizing the position and size of a temperature change region as a priori information to determine the phase distribution of the complex magnetic resonance signal of water proton at a given temperature point and by subtracting the phase distribution before the temperature change estimated (self-referred) from the phase distribution in the peripheral region for each pixel of the image, thereby eliminating the subtraction process of image before and after temperature change.

Abstract: A noninvasive image measuring method of measuring internal organ/tissue temperature using an MRI system. Temperature measurement insusceptible to body motion and spatial variation of magnetic field is realized by utilizing the position and size of a temperature change region as a priori information to determine the phase distribution of the complex magnetic resonance signal of water proton at a given temperature point and by subtracting the phase distribution before the temperature change estimated (self-referred) from the phase distribution in the peripheral region for each pixel of the image, thereby eliminating the subtraction process of image before and after temperature change.