| 摘要 |
Calculating means of an MRI device for reconstructing an image based on an NMR signal (complex signal) from a subject extracts a subject part of a complex image formed from a complex signal (301, 311), calculates a spatial phase distribution based on complex data of the extracted part (302, 312), performs arc tangent aliasing correction of spatial phase distribution data (304, 314), and calculates the temperature distribution based on the corrected spatial phase distribution data (305, 315). Measurement is performed twice at different times t1, t2, the spatial distribution of temperature change is calculated from the differences between data collected by the measurements (320). The spatial distribution is combined with a structure image and the synthesized image is displayed on display means (321). Background noise and false images due to arc tangent aliasing are removed, and a high-resolution temperature change image is formed.
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