Development of self-calibrating B1 correction for three-dimensional variable flip angle T1 mapping
Nagomi Fukuda1, Yuki Kanazawa2, Hiroaki Hayashi3, Yuki Matsumoto2, Masafumi Harada2, Motoharu Sasaki2, and Akihiro Haga2
1Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan, 2Graduate school of Health Science, Tokushima University, Tokushima, Japan, 3Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
We determine the accuracy of our B1 correction method using a cylindrical digital phantom and a digital brain phantom. Comparing the B1 correction accuracy of each sample, the relative uncertainties of each T1 value were less than 5%, and when long TR, the accuracy of B1 correction was almost equal to short TR. In addition, our method enabled us to correct the slice direction accurately. The proposed method can correct B1 inhomogeneity with high accuracy to in-plane and slice direction without additional scanning
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