Systematic Comparison of Quantitative T1 Mapping Methods at 7 T High Field

Thomas Trantzschel¹, Kai Zhong¹, Oliver Speck¹

B1-inhomogenity leads to problems in quantitative T1-mapping case at high field. TESSA as a new rapid method has been presented. This study systematically studied the efficiency and accuracy of TESSA and other established methods. While most methods need an additional B1-map to determine T1 correctly, TESSA is able to estimate T1 and B1 from one measurement. The SNR and accuracy of TESSA can be increased by averaging without sacrificing scan time compared to IR. In addition The T1 fitting algorithm for TESSA is much faster and easy to implement.