Figure 1:

bSSFP-based methods for simultaneous T₁ and T₂ mapping of HP ¹³C probes. (A) Depiction of the bSSFP sequence used in this study, with the preparatory pulse, imaging portion, and tipback pulses for storing the magnetization during the delay portions. (B) Schematic of the dual module approach, with T₂ mapping followed by T₁ mapping. (C) Schematic of a different iteration of the dual module approach, with T₁ mapping followed by T₂ mapping. (D) Schematic of the modified MR fingerprinting approach that jointly estimated T₁, T₂, and B₁. The rectangles in B-D represent the image acquisition portions with the depicted θ.