Low field scanners present several advantages for interventional applications, however no standard method has yet arisen from temperature mapping. In this study we investigated the relationship between T1 and temperature at 0.1 T. MR images of four water phantoms, characterised by different T1, were acquired at different temperatures using a multi-slice FLASH sequence based on Look-Locker. Pixel-wise estimation of T1 relaxation through data fitting showed a growing trend with temperature. In light of the large number of time points, compromising SNR by a factor of 2 produced similar results for an almost 4 times faster acquisition.
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