Magnetic Resonance Imaging measurement data used in our work about "Quantitative Magnetic Resonance Imaging by Nonlinear Inversion of the Bloch Equations". The data is provided in a file format used by the BART toolbox (DOI: 10.5281/zenodo.592960). Further information about the individual datasets: data_05b_b1map Type: B1 Map generated from DICOM output Object: T2 sphere of the NIST phantom (Model 130) Sequence: Preconditioned RF pulse with TurboFLASH Readout TR|TE [ms]: 2000|2.14 FA [deg]: 8 FOV [mm]: 200 data_05b_kspace Type: Radial Single-Shot Dataset Object: T2 sphere of the NIST phantom (Model 130) Sequence: IR bSSFP TR|TE [ms]: 4.88|2.44 FA [deg]: 45 T_RF [ms]: 1 BWTP: 4 FOV [mm]: 200 #Tiny GA: 7 data_06_b1map Type: B1 Map generated from DICOM output Object: Single-slice of volunteers brain Sequence: Preconditioned RF pulse with TurboFLASH Readout TR|TE [ms]: 2000|2.14 FA [deg]: 8 FOV [mm]: 200 data_06_irbssfp_long Type: Radial Single-Shot Dataset Object: Single-slice of volunteers brain Sequence: IR bSSFP TR|TE [ms]: 10.8|5.4 FA [deg]: 45 T_RF [ms]: 2.5 BWTP: 4 FOV [mm]: 200 #Tiny GA: 7 data_06_irbssfp_short Type: Radial Single-Shot Dataset Object: Single-slice of volunteers brain Sequence: IR bSSFP TR|TE [ms]: 4.88|2.44 FA [deg]: 45 T_RF [ms]: 1 BWTP: 4 FOV [mm]: 200 #Tiny GA: 7 data_06_irflash Type: Radial Single-Shot Dataset Object: Single-slice of volunteers brain Sequence: IR FLASH TR|TE [ms]: 4.1|2.58 FA [deg]: 6 T_RF [ms]: 1 BWTP: 4 FOV [mm]: 200 #Tiny GA: 7 data_GSM_t1 Type: Gold-Standard T1 measurement Object: T2 sphere of the NIST phantom (Model 130) Sequence: IR Single-Echo Spin-Echo TR|TE [ms]: 8000|15 FOV [mm]: 200 T_INV [ms]: 30:250:2530 data_GSM_t2 Type: Gold-Standard T2 measurement Object: T2 sphere of the NIST phantom (Model 130) Sequence: Single-Echo Spin-Echo TR|TE [ms]: 8000|(15:40:455) FOV [mm]: 200